computer tune and harness mods? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**truckdude239** · 04-17-2013, 07:24 PM

who the best place with a good price on programing the computer and cutting teh harness i just bought a 4.8 v-8 with harness pedals computers and accessorys and 460le trans for 1100 dollars?

Daaaanz67 · 04-17-2013, 10:46 PM

Your going to like that4.8 I run one in my 69. Revs like a 327 on steroids. I used lt1 swap and built my harness its not that hard. Sorry cant help with comp programming since I'm in Cali sure there's someone closer.
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BR3W CITY · 04-17-2013, 11:18 PM

A dyno tune will always yield better results (and access to support) than a canned e-tune will. I dislike the concept of having to mail my computer to a tuner, especially if its for fine tuning or future minor changes. Most good dyno tuners should cover fine tuning if for example the shift points, firmness, torque managment etc needs adjustments. While some e-tuners will do small changes like that, they can only ballpark the changes, unless you go all the way to data-logging (which would then put you way past an e-tuner anyway).

**truckdude239** · 04-18-2013, 01:21 AM

Mainly I'm worried about vats And having the emission stuff turnex off then change how it RU s
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tinydb84 · 04-18-2013, 03:04 AM

Waitformeperformance has good reviews and does the harness mod and tune for $360

Robznob11 · 04-18-2013, 08:51 AM

Quote:

Originally Posted by tinydb84

Waitformeperformance has good reviews and does the harness mod and tune for $360

Lt1swap.com mod your own harness! Its easy.w4me did my tune and no issues! Dyno tune is better but they can deffinatly get you on the road!
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solidaxel · 04-18-2013, 09:36 AM

I think Howell Fuel Inj. is at the top of the list for me, both , wire and computer .
I have not seen any comments neg. about them, except the cost !!

mattcrp1 · 04-20-2013, 10:48 AM

I just picked up the same 4.8l/4l60e combo for my truck. Did any one keep stock gm fuse block or you use an aftermarket one when modifying the harness?

**truckdude239** · 04-20-2013, 10:52 AM

If you mod the harness the big one under the hood goes by bye
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Robznob11 · 04-20-2013, 03:57 PM

you don't need the stock box its just a headace! most people run a 4 fuse terminal and 2 relays and just make it stand alone. then you use and aftermarket box for the rest of the truck. but if you get the aftermarket box first you can easily run the engine with it and then all wires are marked! lets face it you want to run new wires and fuses on a 40+ year old truck anyhow! you only need a hand full of wires for the truck to run tho!

Daaaanz67 · 04-20-2013, 11:25 PM

This is what I used

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**truckdude239** · 04-21-2013, 12:26 AM

I still haven't desicde who I want to go with for my harness mod I Dont have time to do it my self
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clinebarger · 04-21-2013, 07:23 PM

Using the factory fuse box is Very simple & you don't have to cut the harness up, Or even take it off the engine. I will walk you through it if you want.

**truckdude239** · 04-21-2013, 07:32 PM

clinee i'd like a little more info on how to do that

clinebarger · 04-21-2013, 08:10 PM

You will need a "un-hacked" harness, Fuse box, Fuse box connectors, Fuse box shroud & lid. I will need the year/make/model of the donor truck to give specifics.

**truckdude239** · 04-21-2013, 08:13 PM

2004 silervado 4.8l with a 4l60e trans harness is unhacked DRIVE BY WIRE
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mattcrp1 · 04-22-2013, 11:42 AM

Trying to jump on this train, sorry not trying to hijack. Mine is a 2002 4.8l 4l60e drive by cable. thanks

mattcrp1 · 04-22-2013, 12:15 PM

It looks like lt1swap.com has the break down for using the stock fuse box.

clinebarger · 04-22-2013, 07:46 PM

Quote:

Originally Posted by truckdude239

2004 silervado 4.8l with a 4l60e trans harness is unhacked DRIVE BY WIRE
Posted via Mobile Device

Give me some time & will get all the pin-outs.

eagleuh1 · 04-23-2013, 11:51 AM

x2 on using stock fuse box, connectors. Its a little ugly and bulky, but super simple and has lots of left over relays and fuses for the other little things in life.

**Hart_Rod** · 04-23-2013, 01:38 PM

Quote:

Originally Posted by clinebarger

You will need a "un-hacked" harness, Fuse box, Fuse box connectors, Fuse box shroud & lid. I will need the year/make/model of the donor truck to give specifics.

Do you have this info for a 2013 Camaro SS 6.2/6L80?

**truckdude239** · 04-23-2013, 07:37 PM

do i even want to know how much ti cost for that motor and trans hart lool?

**Hart_Rod** · 04-23-2013, 09:21 PM

Quote:

Originally Posted by truckdude239

do i even want to know how much ti cost for that motor and trans hart lool?

, I quit counting....
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Jon01 · 04-24-2013, 01:08 PM

I've chopped up a few harnesses in the past.
This go-round I spent the $ to have it done professionally. I had Bill @ BP Automotive do mine and he did a fantastic job.
$350 and it came back looking great.
He's a sponsor on ls1tech.

**truckdude239** · 04-24-2013, 01:14 PM

Cline I thank you for the help I was suppose to get the fuse box but they sold the fuse box out of it before I picked up the motor so all I got was an in uncut harness
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04-17-2013, 07:24 PM	#1
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	computer tune and harness mods? who the best place with a good price on programing the computer and cutting teh harness i just bought a 4.8 v-8 with harness pedals computers and accessorys and 460le trans for 1100 dollars? __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

04-17-2013, 10:46 PM	#2
Daaaanz67 Registered User Join Date: Nov 2011 Location: Idaho Posts: 857	Re: computer tune and harness mods? Your going to like that4.8 I run one in my 69. Revs like a 327 on steroids. I used lt1 swap and built my harness its not that hard. Sorry cant help with comp programming since I'm in Cali sure there's someone closer. Posted via Mobile Device

04-17-2013, 11:18 PM	#3
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: computer tune and harness mods? A dyno tune will always yield better results (and access to support) than a canned e-tune will. I dislike the concept of having to mail my computer to a tuner, especially if its for fine tuning or future minor changes. Most good dyno tuners should cover fine tuning if for example the shift points, firmness, torque managment etc needs adjustments. While some e-tuners will do small changes like that, they can only ballpark the changes, unless you go all the way to data-logging (which would then put you way past an e-tuner anyway). __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

04-18-2013, 01:21 AM	#4
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	Re: computer tune and harness mods? Mainly I'm worried about vats And having the emission stuff turnex off then change how it RU s Posted via Mobile Device __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

04-18-2013, 03:04 AM	#5
tinydb84 Registered User Join Date: Jul 2009 Location: San Jose Ca Posts: 2,871	Re: computer tune and harness mods? Waitformeperformance has good reviews and does the harness mod and tune for $360 __________________ David Used parts build: http://67-72chevytrucks.com/vboard/s...d.php?t=638991 My brother's Nova: http://www.67-72chevytrucks.com/vboa...d.php?t=727985 Rear suspension rework: http://www.67-72chevytrucks.com/vboa...d.php?t=750557 Instagram: myfabguy

04-18-2013, 09:36 AM	#7
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: computer tune and harness mods? I think Howell Fuel Inj. is at the top of the list for me, both , wire and computer . I have not seen any comments neg. about them, except the cost !! __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

04-20-2013, 10:48 AM	#8
mattcrp1 Registered User Join Date: May 2010 Location: Mountain House, CA Posts: 555	Re: computer tune and harness mods? I just picked up the same 4.8l/4l60e combo for my truck. Did any one keep stock gm fuse block or you use an aftermarket one when modifying the harness?

04-20-2013, 10:52 AM	#9
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	Re: computer tune and harness mods? If you mod the harness the big one under the hood goes by bye Posted via Mobile Device __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

04-20-2013, 03:57 PM	#10
Robznob11 Registered User Join Date: Feb 2004 Location: brownfield texas (west texas) Posts: 1,936	Re: computer tune and harness mods? you don't need the stock box its just a headace! most people run a 4 fuse terminal and 2 relays and just make it stand alone. then you use and aftermarket box for the rest of the truck. but if you get the aftermarket box first you can easily run the engine with it and then all wires are marked! lets face it you want to run new wires and fuses on a 40+ year old truck anyhow! you only need a hand full of wires for the truck to run tho! __________________ The Ghost 67 short wide full custom. 550 hp LSX, 4l80E, narrowed 9". Body dropped w/air ride! ........................ ___ .........________//__{\_____ ,,,,,,,/__(⊙)___//___/__(O)_/ @disciple2.rc 💪instagram💪 LED TAILS

04-20-2013, 11:25 PM	#11
Daaaanz67 Registered User Join Date: Nov 2011 Location: Idaho Posts: 857	Re: computer tune and harness mods? This is what I used Posted via Mobile Device

04-21-2013, 12:26 AM	#12
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	Re: computer tune and harness mods? I still haven't desicde who I want to go with for my harness mod I Dont have time to do it my self Posted via Mobile Device __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

04-21-2013, 07:23 PM	#13
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: computer tune and harness mods? Using the factory fuse box is Very simple & you don't have to cut the harness up, Or even take it off the engine. I will walk you through it if you want. Attached Images

04-21-2013, 07:32 PM	#14
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	Re: computer tune and harness mods? clinee i'd like a little more info on how to do that __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

04-21-2013, 08:10 PM	#15
clinebarger Senior Member Join Date: May 2009 Location: Fort Worth, TX Posts: 6,370	Re: computer tune and harness mods? You will need a "un-hacked" harness, Fuse box, Fuse box connectors, Fuse box shroud & lid. I will need the year/make/model of the donor truck to give specifics.

04-21-2013, 08:13 PM	#16
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	Re: computer tune and harness mods? 2004 silervado 4.8l with a 4l60e trans harness is unhacked DRIVE BY WIRE Posted via Mobile Device __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube Last edited by truckdude239; 04-22-2013 at 11:47 AM.



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04-22-2013, 11:42 AM	#17
mattcrp1 Registered User Join Date: May 2010 Location: Mountain House, CA Posts: 555	Re: computer tune and harness mods? Trying to jump on this train, sorry not trying to hijack. Mine is a 2002 4.8l 4l60e drive by cable. thanks

04-22-2013, 12:15 PM	#18
mattcrp1 Registered User Join Date: May 2010 Location: Mountain House, CA Posts: 555	Re: computer tune and harness mods? It looks like lt1swap.com has the break down for using the stock fuse box.

04-23-2013, 11:51 AM	#20
eagleuh1 Registered User Join Date: Jul 2009 Location: Russellville, Arkansas Posts: 1,699	Re: computer tune and harness mods? x2 on using stock fuse box, connectors. Its a little ugly and bulky, but super simple and has lots of left over relays and fuses for the other little things in life.

04-23-2013, 07:37 PM	#22
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	Re: computer tune and harness mods? do i even want to know how much ti cost for that motor and trans hart lool? __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

04-24-2013, 01:08 PM	#24
Jon01 Registered User Join Date: Nov 2012 Location: West Des Moines, Iowa Posts: 450	Re: computer tune and harness mods? I've chopped up a few harnesses in the past. This go-round I spent the $ to have it done professionally. I had Bill @ BP Automotive do mine and he did a fantastic job. $350 and it came back looking great. He's a sponsor on ls1tech. __________________ 64 Biscayne - 230/PG, Accuair E-Level, 18/20 Bonneville C's. 68 Charger R/T - #'s matching 440/auto car, 499/727/3.91. 68 GTX - 440/4-speed, Dana 60. 44,000 miles. 71 SWB C10 - LQ4+S476r 06 Duramax - LBZ - Exhaust, EFI Live, etc...

04-24-2013, 01:14 PM	#25
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,219	Re: computer tune and harness mods? Cline I thank you for the help I was suppose to get the fuse box but they sold the fuse box out of it before I picked up the motor so all I got was an in uncut harness Posted via Mobile Device __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

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