Getting flashed for 2nd time tomorrow
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From: Toms River, NJ
Originally Posted by DynoFlash
The main factor here is his boost gauge a defi mechanical which is reading about 2 psi higher than the acutal boost
On the street it was holding a steady 24 psi indicated which translates to 22 psi actual
A bit higher than some can hold on pump gas - but with the back pressure reducing mods the car was clean with zero knock
Many people do not appreciate how inaccurate 90% of the mechanical boost gauges on the market are - particularly the defi brand
I have found good success with Stewart Warner
PS - Once you have a accurate boost gauge in there I would not go over 22 psi even on pump gas that is plenty of boost on the street
On the street it was holding a steady 24 psi indicated which translates to 22 psi actual
A bit higher than some can hold on pump gas - but with the back pressure reducing mods the car was clean with zero knock
Many people do not appreciate how inaccurate 90% of the mechanical boost gauges on the market are - particularly the defi brand
I have found good success with Stewart Warner
PS - Once you have a accurate boost gauge in there I would not go over 22 psi even on pump gas that is plenty of boost on the street
AL was right on wth that statement. I installed the Stewart Warner gauge today, went out for a test run and did a 3rd gear pull.... right to 21psi. I was shocked. The Defi just 15m before read 23psi. So I was not running 24-25psi! Boost when dynoed was around 22-23max. Just to clear things up! So dont go trying to run 24-25psi haha, unless I guess you have a stupid Defi-D.
-Tom
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