Low Boost
I have a 3800sc from a 93 SSEI in my fiero , from reading many posts here my boost levels are way low. MAX boost I am only getting 5 sometimes 6psi. some has said I should see upwards of 10psi. Any suggestions on what to check ? Gas milage is around 7-8 mpg, I expected much better than that. Thanks for any help.
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The boost will vary depending on intake and exhaust restrictions.
You probably have a slightly modified version due to adapting to the fiero. Very poor mileage. You should be getting twice that but if your foot is always in it, well. :roll: That fiero must really move. :shock: |
I used a Honda CRX Air Intake , leaves the filter right behind a side scoop , so no restrictions there, and my exhaust is about 8" of pipe coming off the manifold into 2 Cherry bomb mufflers going to each side of the car. I dont think they would be very restrictive. I have gotten a few codes from the ecu one was 64 and other one was 60 something cant remember. I know something isnt correct . It doesnt really have the power I would think it should. I have read alot here of people saying they are gettin 9-10lbsbut maybe they are refering to a series 2 than the series 1.
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no
The people that are pagging the boost gauge have better pullys, wires, intake, exhaust. The fact that your only running cherry bombs... no backpressure? everything short of a hopped up 350 chev needs back pressure..
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So maybe nothing wrong with engine , just need better exhaust ? I plan on a differant pulley, wires is Accell and just ordered MSD DIS box friday. Thanks for the help!
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Make sure you have no vacum leaks and the boost selinoid is not broken. I can get about 9psi on hot days. Past 10 on cold days.
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Thanks for replys , gives me a place to start.
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K, Thanks for everyones help but I finally found my problem. I guess the belt must have been slipping????? I out a new belt on it and Im getting 8-9lbs of boost. I never thought a belt would make that big of differance but slipping guess it would. Thanks again for help.
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