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09-05-2007, 06:35 PM
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#1 |
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computer illiterate
Join Date: Jan 2001
Location: Des Moines, IA
Posts: 6,440
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tpi question
i am putting a tpi in my swb project. and i was wondering if i need the egr valve or not. or if i can just block it off. i was just wondering as it has a wire coming from it.
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72 2wd blazer 72 swb 4x4 |
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09-05-2007, 06:47 PM
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#2 |
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Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,524
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Re: tpi question
If I remember right, I think I have mine hooked up. No other emission type stuff though.
I used the painless wiring harness. |
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09-05-2007, 06:47 PM
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#3 |
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Registered User
Join Date: Feb 2002
Location: Vacaville, CA
Posts: 2,745
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Re: tpi question
They can usually be blocked off with no adverse effect. In fact you will have a cleaner intake with it blocked. Having it blocked will set a code but you won't be running a check engine light so not to worry.
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 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 |
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09-05-2007, 06:52 PM
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#4 |
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Senior Member
Join Date: Dec 2003
Location: Kingsport TN
Posts: 4,641
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Re: tpi question
you can block it off you dont need it the wiring harnes you got fro me doesnt even have egr wiring on it. you will alway have a code for the egr in the ecm unless you have a custom chip burnt then you can turn the egr stuff off.
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Earl 68 2500 4x4 GMC Burb |
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09-05-2007, 07:39 PM
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#5 |
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Registered User
Join Date: Aug 2007
Location: reno
Posts: 397
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Re: tpi question
You can block the egr port with no problems, I just cut the vaccum diaphram off of mine and plugged the hole. Never had a problem with it.
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09-05-2007, 10:27 PM
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#6 |
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Registered User
Join Date: May 2000
Location: Petrolia,Ontario,Canada but working in Port Huron,Mi.
Posts: 1,772
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Re: tpi question
Yup...Mines blocked off.
No codes thrown with it blocked off either. You can see the chrome block-off plate in the center of the intake. 
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71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE Last edited by BobbyK; 09-05-2007 at 10:32 PM. |
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09-06-2007, 08:38 AM
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#7 |
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computer illiterate
Join Date: Jan 2001
Location: Des Moines, IA
Posts: 6,440
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Re: tpi question
where did you get that block off plate?
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72 2wd blazer 72 swb 4x4 |
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09-06-2007, 03:04 PM
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#8 |
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Registered User
Join Date: May 2000
Location: Petrolia,Ontario,Canada but working in Port Huron,Mi.
Posts: 1,772
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Re: tpi question
There's a few on E-bay right now.
http://stores.ebay.com/Custom-Billet-Works-Inc Your local parts store should have them as well. I'm sure Summit and Jeg's have them. Why not make your own? It doesn't need to be pretty as it's hidden by the upper intake.
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71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE Last edited by BobbyK; 09-06-2007 at 03:05 PM. |
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09-06-2007, 03:34 PM
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#9 |
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Registered User
Join Date: Apr 2007
Location: Freedom CA
Posts: 488
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Re: tpi question
The EGR can't do anything at full throttle, so why not leave it?
That was my theory anyway. I did cut its shroud out of the intake.
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68 Chevrolet k20 Longbed 350 SM465/205, Dana 44, 14bolt, Power steering, Power Disk Brakes, 35" BFGs. 84 Chevrolet Suburban K20 6.2 Banks turbo TH400/NP208 Now with G80 68 GMC C20 Parts? Truck And a few cars 
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09-07-2007, 10:37 AM
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#10 |
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Back in the sticks
Join Date: Jan 2001
Location: Fordland, MO
Posts: 3,188
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Re: tpi question
I left mine installed as well, just not connected. Also had the prom burnt with No EGR, so it doesn't give a code for the light to come on. Jeff.
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1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty |
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