Quote:
Originally Posted by FRS Justin
Hey Kris didn't you lower the compression?
for the EXACT same combination of parts...a higher compression motor draws harder on the intake, and thus has more vacuum.
the bigger the difference in compression...the bigger the difference in vacuum...
1-2 inches of vacuum per point seems realistic...
I would check fuel trims for signs of a vacuum leak not the gauge |
Hey Justin, thanks for the info !
This is what my tuner sent me letting me know I have a vacuum leak
"I can see that manifold absolute pressure is at .52 BAR and 18% short term fuel trims. Trims should be close to 0%, and manifold absolute pressure at unassisted idle should be .27-.35 or so with no vacuum leaks."