Will the ECU compensate for a lower fuel pressure than spec (58psi)?
What kind of symptoms would you notice with a slightly too low fuel pressure (46-50 psi)?
Will the ECU compensate for a lower fuel pressure than spec (58psi)?
What kind of symptoms would you notice with a slightly too low fuel pressure (46-50 psi)?
u will have to increase some fuel. other than that i have read about quite a few people running around those pressures. i know a stock ls will run as low a 40 psi without so much as setting a code or giving a major driveability symptom.
you will see your ecm adding a lot of fuel to the map to get the ltfts correct. If this is a permanent situation you need to tune your VE table to match the new fuel curve w/ the lowered pressure.
*Jeff*
2002 4dr 2wd Blazer, 06 L33, LS6 cam, built trans, etc.. SOLD
2008 Tahoe Hybrid 2wd, 6.0L LFA (stock dd)
1964 Chevelle Malibu 4 door, 2003 LQ4, 06 GTO T56 swap -> https://www.chevelles.com/threads/19...-build.955866/
Normally you would adjust your injector flow rate to compensate for the change.
2001 Z06 : 856/830 : Built LQ9 403ci : D1SC 17psi : Self-built , self-tuned.
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