Rattling noise only after ~7psi
#1
Rattling noise only after ~7psi
I know I've been sort of a post ***** lately with starting new threads but it seems like one stupid problem after another. Now after installing the supra 305cc injectors and upping the boost I get this rattling noise above ~7psi. While driving it almost sounds like its the turbo, could 7-10psi make the greddy kit turbo make noises like that? The turbo is not even a year old but does have a little side to side shaft play when you wiggle it on the cold side.
#5
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#9
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that means you are too lean
a Narrow Band says rich when youre anywhere from 14:1 up, if youre on the border you are likely in the high 13's, which is too lean for boost
that narrow band should be way into the rich part of the guage under boost, even maxed out
#10
1. Turn boost back down
2. Get a wideband
3. Install wideband
4. TUNE
5. TUNE
6. TUNE SOME MORE
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2. Get a wideband
3. Install wideband
4. TUNE
5. TUNE
6. TUNE SOME MORE
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#15
So no fuel pressure regulator?
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#18
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oh okay, well basically the only way to add fuel is to get a different ratio diaphram for the vortec FMU, it will basically add more fuel per psi, but a better option would be to find a BEGi adjustable FMU used (ppl sell then on here all the time), or better yet, get a PNP megasquirt, haha.