Tuned Port Injection - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Sonny · 12-09-2005, 10:10 PM

I am considering putting a TPI in my 68 and I could use some ideas, suggestions, things not to and to do, etc. Thanks in advance for you comments, suggestions, and pictures (if you have some to show off). My truck is a SWB C-10 with a 350/700r4.

Thanks again,
Sonny

71swb4x4 · 12-09-2005, 10:14 PM

There are quite a few of us that have TPI. I bought a whole car and transfered everything, that is what I would recomend. I would also recomend the Helm manual for whatever car you choose, it has great wiring diagrams and other info for your setup. I can add more when I have some time.
Shawn

Blue4x4 · 12-09-2005, 10:50 PM

If you are inquiring about the Edelbrock tpi 4 barrel system, I finidhed mine up 3 months ago. Let us know

Sonny · 12-09-2005, 10:57 PM

Do you like the Edelbrock setup? I was thinking about using a GM unit with a few modifications.

71swb4x4 · 12-10-2005, 12:01 AM

Here's what I did:
I bought an 86 IROC with a 305 and auto. I pulled the TPI, harness, computer, and anything else I needed. I put it all on my existing 350. I bumped the injectors up, and had my chip reburned by Brian at tpichips.com. I removed anything from the stock wiring harness that I didn't need, like the wipers, ac, electric fans, emissions, etc. I put a tank in the rear with an internal fuel pump. It was pretty straight forward, just a little time consuming. I am using all the stock sensors, knock, O2, etc. I have a mass air system.
One of my problems was a thermostat housing, but I was able to get one that has worked well for me.
I have been running mine for well over a year and I love it.
Here are a few members that I can think of that are running GM TPI too: Russel, BobbyK, maybe Cheyenne10, and a few others that I can't think of right now.

neonlarry · 12-10-2005, 03:08 PM

Also chech out these sites:
http://chevythunder.com/index.htm
http://www.jagsthatrun.com/

71swb4x4 · 12-10-2005, 03:52 PM

Both of those sites that neonlarry mentions helped me a lot. I bought my air ducting and vehicle speed sensor from jagsthatrun.

mocwon · 12-11-2005, 09:46 AM

I did just about what 71swb4X4 did with a couple of exceptions. The wiring harness from the donor Camaro was toast so a Painless harness was used. Since the car wasn't running and the condition of the electronics were suspect, traded the ECM at Adavnced Auto and got one for a 1988 Camaro 350 ($80) and bought the chip for that car from GM ($65). Used a late 80's Firebird 90 deg rubber snorkle adapter and bought a snorkle tube with K&N filter on Ebay that fits a 5.9 litre (?) Durango hemi. Fabricated a bracket to hold the tube. Highly suggest the 700R4 swap at the same time and conversion to single serpentine belt set up along with alternator upgrade.

One word of caution, the relays for the mass air flow sensor and the mass air flow burn off look the same and the plug from either one will plug into the other. If you get them reversed, the engine will run very, very rich and load up, especially at idle. The engine will get so much gas it will wash the cylinder walls and a great deal of gas will end up in the crank case. This little mistake caused five error codes to be set that pointed to the mass air flow sensor as the possible culprit but I knew that was wrong since it was new.

Russell · 12-11-2005, 01:52 PM

I got my TPI fired up for about 10 minutes till I discovered that my Mass Air Sensor was shot, and since I've been trying to find speed density parts within my price range.

Got the TPI sitting on my dresser behind me, with a carb on the truck at the moment. All I am needing now is a `730 ECM with a 350 chip, and a speed density knock sensor. Hopefully get it installed early next year

Deuce · 12-11-2005, 05:16 PM

Quote:

Originally Posted by mocwon

I did just about what 71swb4X4 did with a couple of exceptions. The wiring harness from the donor Camaro was toast so a Painless harness was used. Since the car wasn't running and the condition of the electronics were suspect, traded the ECM at Adavnced Auto and got one for a 1988 Camaro 350 ($80) and bought the chip for that car from GM ($65). Used a late 80's Firebird 90 deg rubber snorkle adapter and bought a snorkle tube with K&N filter on Ebay that fits a 5.9 litre (?) Durango hemi. Fabricated a bracket to hold the tube. Highly suggest the 700R4 swap at the same time and conversion to single serpentine belt set up along with alternator upgrade.

One word of caution, the relays for the mass air flow sensor and the mass air flow burn off look the same and the plug from either one will plug into the other. If you get them reversed, the engine will run very, very rich and load up, especially at idle. The engine will get so much gas it will wash the cylinder walls and a great deal of gas will end up in the crank case. This little mistake caused five error codes to be set that pointed to the mass air flow sensor as the possible culprit but I knew that was wrong since it was new.

Can you post some under hood shots please??

mocwon · 12-11-2005, 11:19 PM

Quote:

Originally Posted by Deuce

Can you post some under hood shots please??

I'll take some later this week and post them for you.

chuck1960 · 12-11-2005, 11:31 PM

What about the VATS. I have everything out of a 89 IROC and was told I would have to buy a chip to bypass it. Can you elimnate it or wire it up to work without the ignition switch.

71swb4x4 · 12-11-2005, 11:32 PM

Chuck, I am pretty sure that the jagsthatrun book has information about VATS. I will try to find my book and check it out. Their website may have info too: www.jagsthatrun.com

71swb4x4 · 12-11-2005, 11:49 PM

Chuck, here is what the jagsthatrun book says:
If you have the key that came with it, measure the resistance across the "pellet" and get a matching resistor from Radio Shack and wire it into the VATS module. If you don't have the key but you have some patience, you can try each resistance until it works. There are 15 different resistances.
They also go on to say that Chevrolet has a tool called the "interregator" that can determine the proper key code, so your local Chevy dealer may be able to help.
They also say that you can purchase a new PASS-KEY module form the dealer which will accept and of the resistances the first time power is applied to it.
They go on to say that the easiest way may be to purchase a PROM chip that has the VATS eliminated.

I hope that helps, you should purchase this book, it has helped me a lot. They sell it at www.jagsthatrun.com. I also see used ones on Ebay or half.co, quite often.
Shawn

Andy4639 · 12-12-2005, 05:34 PM

I have had this set up now for almost 20 year's. I put it in back in 87 out of a 86 Iroc HO. About 2 years later I installed the 700-R4. I'm running a ferrerio V-6 computer from street and performance. My truck has over 350,000 miles on it and the motor has 200,000 of them on it. Here are a couple of pic, check my home page and you can see more of it.

**Captkaos** · 12-12-2005, 05:54 PM

I am working on piecing one together and documenting it here:
http://67-72chevytrucks.com/vboard/s...d.php?t=170357

mocwon · 12-12-2005, 06:18 PM

Quote:

Originally Posted by Andy4639

I have had this set up now for almost 20 year's. I put it in back in 87 out of a 86 Iroc HO. About 2 years later I installed the 700-R4. I'm running a ferrerio V-6 computer from street and performance. My truck has over 350,000 miles on it and the motor has 200,000 of them on it. Here are a couple of pic, check my home page and you can see more of it.

Now, there's the best reference I've ever seen about the reliablity of GM's TPI (mass airflow) setup. Beautiful setup to boot!!! I hope mine lasts at least half that long.....

Andy4639 · 12-12-2005, 06:34 PM

This is my everyday driver to work. I have a lot of stuff done on this truck. It need's a paint job right now, but my 17 year old and 12 year old get most of my time right now. Oh and money too.
I upgraded the 700-R4 with corvette stuff and it's performed well over the last 15 years. I put the r-134A in it and a late model system in it also.

71swb4x4 · 12-12-2005, 08:14 PM

Andy, did you change that to Speed Density? I don't see the Mass Air Flow Sensor.

Andy4639 · 12-12-2005, 09:22 PM

Yes, I never had the mass air flow. When I did this truck I think it was like the only one on here at the time. I know it was the only one I had seen in person until I went to Chips rod shop in Denver NC for his grand opening. Street and performance was there and that sold me.

chuck1960 · 12-12-2005, 10:45 PM

Thanks for the info 71swb4x4, I think I have the book you mentioned, I'll have to see if I can find it. Thanks again.

Sonny · 12-14-2005, 12:01 AM

Thanks for all the info you have armed me with. I am looking forward to making this mod now!

Thanks again,
Sonny

12-09-2005, 10:10 PM	#1
Sonny Active Member Join Date: Jan 2004 Location: Centerville, GA Posts: 240	Tuned Port Injection I am considering putting a TPI in my 68 and I could use some ideas, suggestions, things not to and to do, etc. Thanks in advance for you comments, suggestions, and pictures (if you have some to show off). My truck is a SWB C-10 with a 350/700r4. Thanks again, Sonny

12-09-2005, 10:14 PM	#2
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: Tuned Port Injection There are quite a few of us that have TPI. I bought a whole car and transfered everything, that is what I would recomend. I would also recomend the Helm manual for whatever car you choose, it has great wiring diagrams and other info for your setup. I can add more when I have some time. Shawn __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

12-09-2005, 10:50 PM	#3
Blue4x4 Senior Member Join Date: Mar 2003 Location: Sparks, NV Posts: 790	Re: Tuned Port Injection If you are inquiring about the Edelbrock tpi 4 barrel system, I finidhed mine up 3 months ago. Let us know Attached Images

12-09-2005, 10:57 PM	#4
Sonny Active Member Join Date: Jan 2004 Location: Centerville, GA Posts: 240	Re: Tuned Port Injection Do you like the Edelbrock setup? I was thinking about using a GM unit with a few modifications.

12-10-2005, 12:01 AM	#5
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: Tuned Port Injection Here's what I did: I bought an 86 IROC with a 305 and auto. I pulled the TPI, harness, computer, and anything else I needed. I put it all on my existing 350. I bumped the injectors up, and had my chip reburned by Brian at tpichips.com. I removed anything from the stock wiring harness that I didn't need, like the wipers, ac, electric fans, emissions, etc. I put a tank in the rear with an internal fuel pump. It was pretty straight forward, just a little time consuming. I am using all the stock sensors, knock, O2, etc. I have a mass air system. One of my problems was a thermostat housing, but I was able to get one that has worked well for me. I have been running mine for well over a year and I love it. Here are a few members that I can think of that are running GM TPI too: Russel, BobbyK, maybe Cheyenne10, and a few others that I can't think of right now. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

12-10-2005, 03:08 PM	#6
neonlarry Registered User Join Date: Feb 2002 Location: Vacaville, CA Posts: 2,745	Re: Tuned Port Injection Also chech out these sites: http://chevythunder.com/index.htm http://www.jagsthatrun.com/ __________________ 70 C/10 Light Red 350/TH350, HEI, Duals w/40 series Flows, 91 seat, LED taillights 99 Pontiac S/C GTP, SLP Ram Air hood, GMPP Konis & springs 95 Neon ACR, MP PCM, AFX UDP, 3.0 CAI

12-10-2005, 03:52 PM	#7
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: Tuned Port Injection Both of those sites that neonlarry mentions helped me a lot. I bought my air ducting and vehicle speed sensor from jagsthatrun. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

12-11-2005, 09:46 AM	#8
mocwon Keep On Truckin' Join Date: Mar 2003 Location: Buda, Texas Posts: 1,354	Re: Tuned Port Injection I did just about what 71swb4X4 did with a couple of exceptions. The wiring harness from the donor Camaro was toast so a Painless harness was used. Since the car wasn't running and the condition of the electronics were suspect, traded the ECM at Adavnced Auto and got one for a 1988 Camaro 350 ($80) and bought the chip for that car from GM ($65). Used a late 80's Firebird 90 deg rubber snorkle adapter and bought a snorkle tube with K&N filter on Ebay that fits a 5.9 litre (?) Durango hemi. Fabricated a bracket to hold the tube. Highly suggest the 700R4 swap at the same time and conversion to single serpentine belt set up along with alternator upgrade. One word of caution, the relays for the mass air flow sensor and the mass air flow burn off look the same and the plug from either one will plug into the other. If you get them reversed, the engine will run very, very rich and load up, especially at idle. The engine will get so much gas it will wash the cylinder walls and a great deal of gas will end up in the crank case. This little mistake caused five error codes to be set that pointed to the mass air flow sensor as the possible culprit but I knew that was wrong since it was new. __________________ Just Passin' Thru Some projects are like herding cats; others are like putting out fires; this one was like herding cats on fire..... Last edited by mocwon; 12-11-2005 at 09:50 AM.

12-11-2005, 01:52 PM	#9
Russell Professional Grade Join Date: May 2003 Location: Fort McMurray, Alberta Posts: 7,915	Re: Tuned Port Injection I got my TPI fired up for about 10 minutes till I discovered that my Mass Air Sensor was shot, and since I've been trying to find speed density parts within my price range. Got the TPI sitting on my dresser behind me, with a carb on the truck at the moment. All I am needing now is a `730 ECM with a 350 chip, and a speed density knock sensor. Hopefully get it installed early next year __________________ 1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap)

12-11-2005, 11:31 PM	#12
chuck1960 Junior Member Join Date: Oct 2005 Location: cleveland, tn. Posts: 71	Re: Tuned Port Injection What about the VATS. I have everything out of a 89 IROC and was told I would have to buy a chip to bypass it. Can you elimnate it or wire it up to work without the ignition switch.

12-11-2005, 11:32 PM	#13
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: Tuned Port Injection Chuck, I am pretty sure that the jagsthatrun book has information about VATS. I will try to find my book and check it out. Their website may have info too: www.jagsthatrun.com __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

12-11-2005, 11:49 PM	#14
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: Tuned Port Injection Chuck, here is what the jagsthatrun book says: If you have the key that came with it, measure the resistance across the "pellet" and get a matching resistor from Radio Shack and wire it into the VATS module. If you don't have the key but you have some patience, you can try each resistance until it works. There are 15 different resistances. They also go on to say that Chevrolet has a tool called the "interregator" that can determine the proper key code, so your local Chevy dealer may be able to help. They also say that you can purchase a new PASS-KEY module form the dealer which will accept and of the resistances the first time power is applied to it. They go on to say that the easiest way may be to purchase a PROM chip that has the VATS eliminated. I hope that helps, you should purchase this book, it has helped me a lot. They sell it at www.jagsthatrun.com. I also see used ones on Ebay or half.co, quite often. Shawn __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

12-12-2005, 05:34 PM	#15
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Tuned Port Injection I have had this set up now for almost 20 year's. I put it in back in 87 out of a 86 Iroc HO. About 2 years later I installed the 700-R4. I'm running a ferrerio V-6 computer from street and performance. My truck has over 350,000 miles on it and the motor has 200,000 of them on it. Here are a couple of pic, check my home page and you can see more of it. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

12-12-2005, 05:54 PM	#16
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: Tuned Port Injection I am working on piecing one together and documenting it here: http://67-72chevytrucks.com/vboard/s...d.php?t=170357 __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

12-12-2005, 06:34 PM	#18
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Tuned Port Injection This is my everyday driver to work. I have a lot of stuff done on this truck. It need's a paint job right now, but my 17 year old and 12 year old get most of my time right now. Oh and money too. I upgraded the 700-R4 with corvette stuff and it's performed well over the last 15 years. I put the r-134A in it and a late model system in it also. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



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12-12-2005, 08:14 PM	#19
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: Tuned Port Injection Andy, did you change that to Speed Density? I don't see the Mass Air Flow Sensor. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

12-12-2005, 09:22 PM	#20
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,945	Re: Tuned Port Injection Yes, I never had the mass air flow. When I did this truck I think it was like the only one on here at the time. I know it was the only one I had seen in person until I went to Chips rod shop in Denver NC for his grand opening. Street and performance was there and that sold me. __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.

12-12-2005, 10:45 PM	#21
chuck1960 Junior Member Join Date: Oct 2005 Location: cleveland, tn. Posts: 71	Re: Tuned Port Injection Thanks for the info 71swb4x4, I think I have the book you mentioned, I'll have to see if I can find it. Thanks again.

12-14-2005, 12:01 AM	#22
Sonny Active Member Join Date: Jan 2004 Location: Centerville, GA Posts: 240	Re: Tuned Port Injection Thanks for all the info you have armed me with. I am looking forward to making this mod now! Thanks again, Sonny Last edited by Sonny; 12-14-2005 at 12:01 AM.

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