big stuff run screen shot? top end lay over!
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having some top end issues with no given obvious things on data log, tried to upload the file from bs3 but say invalid csv file? prob can not get much out of this screen shot.. but boost stays constent..timing..voltage..fuel pressure..tps.. and a/f all constent.. just as u see the rpm will fall and raise and fall again.. u feel it in car as well.. almost the feeling of spark blowout... i figure u ask this so br7efs at .026 gap it does it.. and a 7317-8 at .022 gap it did it.. the more u run the worst it gets thru night as well... have checked small things like grounds/fuel filter/ohm wires... also had the round truck coils (heard some have issues) im swapping to square type! my engine guys says lifters (reused stock ones) and wants to double check spring pressures... so ideas that i may not have thought of would help..
first shot is worst run of night
secong is a better run of night..
370cu
88 turbo
stock lifters
shift at 7-7300
hyd roller
317 heads known comp duals wrking when headsw where done
truck manifolds
60mm gate
5in dp
1.23 ex ar..
first shot is worst run of night
secong is a better run of night..
370cu
88 turbo
stock lifters
shift at 7-7300
hyd roller
317 heads known comp duals wrking when headsw where done
truck manifolds
60mm gate
5in dp
1.23 ex ar..
Last edited by van383; 09-12-2010 at 03:41 AM.
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so what and why would i be seeing issues with back pressure psi on time and not the next?