Leaking Fast 90?
Thread Starter
TECH Apprentice
Joined: Feb 2005
Posts: 395
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Leaking Fast 90? I just finished up a H&C&I install and was about to start working on my tune. I flashed a base tune (ve table) from a car with a similar cam and surprisingly the car holds an idle and I can drive it as long as I let it warm up before I take off. The problem I see is that my fuel trims are way out of whack, so much so that it looks like I may have an air leak somewhere. My ltft's are +25 and my stft's are in the 40's at idle and about mid 20's at part throttle. My question is what are tell tale signs of an intake leak and how can I check for them?
I was thinking of spraying something like ether around the intake while the car is running to see if the rpm's shoot up but I don't want to start a fire either. Any thoughts on this?
Thanks.
I was thinking of spraying something like ether around the intake while the car is running to see if the rpm's shoot up but I don't want to start a fire either. Any thoughts on this?
Thanks.
did you check to see if the throttle blade is fully closing? with my 90/90 install, i had to give the cable some adjustment to let the blade fully close. i guess the size of the throttle body compared to stock was that much bigger and the demand was that length needed to be added to the cable. that was my leak that i thought was the intake not seating.
sorry, forgot to add: when the car is idleing, push the throttle cam that the cable is connected to towards you. if the idle drops, that is the leak and the TPS should be corrected for the trims. i hope this helps.
