TBIThrottle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.
Welcome to ThirdGen.org!
Welcome to ThirdGen.org.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!
Don't remember which one I got, but I put a carb intake on my 1990 TBI - just have to get an adapter to adapt the TBI unit ro the carb intake. I remember it was a Weiand intake.
BUT - what other mods have you done? You do too many, and you'll have to get a new chip burned! The TBI ECM doesn't do well with very many mods unless it gets retuned, and it's very very hard to find anyone to do it for tbi chipsets.
Right now it only has a kn and open element but i am gonna be swapping to a 350 soon and was thinking of adding some performance did you notive gains with the intake, also do you need one with egr or any intake would work with it, also since in mine theres a sensor would that have to do something with it or no.
Last edited by JR350tpi; 10-11-2009 at 10:36 PM.
Reason: sensor plug
It's been awhile back - but I think the Weiand intake I got had the EGR opening. Everything was direct bolt on except the TBI unit, which like I said I got an adapter for (I got it at Advance Auto - a 2-day order, cost $39 then).
Gains I couldn't tell ya - I did too much (and thus the warning about the TBI engine mods and the ECM not being able to keep up). I did LT1 cam, #416 heads ported/polished with 1.6:1 rollertip rockers, 1.94 intake valves (instead of stock 1.84), that intake, headers, and gutted cat with hiflo muffler. All of that was way way too much, the chip didn't know what to do with all the new air it could sense, and so in response to my mods the chip pumped tons of fuel to accomodate all the new airflow, which made it run rich as hell, and so it ran poorly. But - you could feel the extra power just dying to get out - if I had swapped to a carb, that little modded 305 would have screamed!
Are you limited by state emission laws against swapping to a carb when you do the 350?
Nevermind - I see the CA. Just don't do too much and the TBI chip will be fine. If/when you do the 350, try to swap to TPI if you can - alot more of programming potential with the TPI chip, and it'll be legal in Cali.
It's been awhile back - but I think the Weiand intake I got had the EGR opening. Everything was direct bolt on except the TBI unit, which like I said I got an adapter for (I got it at Advance Auto - a 2-day order, cost $39 then).
Gains I couldn't tell ya - I did too much (and thus the warning about the TBI engine mods and the ECM not being able to keep up). I did LT1 cam, #416 heads ported/polished with 1.6:1 rollertip rockers, 1.94 intake valves (instead of stock 1.84), that intake, headers, and gutted cat with hiflo muffler. All of that was way way too much, the chip didn't know what to do with all the new air it could sense, and so in response to my mods the chip pumped tons of fuel to accomodate all the new airflow, which made it run rich as hell, and so it ran poorly. But - you could feel the extra power just dying to get out - if I had swapped to a carb, that little modded 305 would have screamed!
Are you limited by state emission laws against swapping to a carb when you do the 350?
Nevermind - I see the CA. Just don't do too much and the TBI chip will be fine. If/when you do the 350, try to swap to TPI if you can - alot more of programming potential with the TPI chip, and it'll be legal in Cali.
The thing is that i have checked to swap to tpi and it would be around $1000 and if i just go to 350 tbi it would be only $300
