Where to dyno in Nor-Cal?
08-18-2005 | 02:10 PM
#16
Three Wheelin'
Joined: Jun 2001
Posts: 1,598
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From: San Jose, CA
Well, the graphs don't show boost so it's hard to say if your wastegate is giving up the ghost but at richer than 10:1 you would have to be losing at least 4psi on the top end and since its rich across the board I doubt this is the main problem. I suspect that adjustable fuel pressure regulator is toast.
08-18-2005 | 02:48 PM
#17
Thread Starter
Legend Killer
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Joined: Jul 2005
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From: Nor-Cal
Originally Posted by Mike S
Well, the graphs don't show boost so it's hard to say if your wastegate is giving up the ghost but at richer than 10:1 you would have to be losing at least 4psi on the top end and since its rich across the board I doubt this is the main problem. I suspect that adjustable fuel pressure regulator is toast.
In a previous dyno run at Devek the boost only got to its max of 13.46 at 4600rpm and then quickly started downward.......10.5 @ 5300rpm.....9.3@5900rpm......
The AFPR is brand new.........last mechanic purposely set the A/F rich so maybe he went too rich.....or as Tom has suggested I have a vacuum leak somewhere.
08-21-2005 | 04:53 PM
#18
Three Wheelin'
Joined: Jun 2001
Posts: 1,598
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From: San Jose, CA
Andial,
I have a shimmed stock wastegate that you can have if you want to give that a try. If I remember correctly, I was running 16psi with it and the boost dropped down to about 14psi at redline. Not perfect, but pretty good for a stocker. Anyways...its free if you want it.
I have a shimmed stock wastegate that you can have if you want to give that a try. If I remember correctly, I was running 16psi with it and the boost dropped down to about 14psi at redline. Not perfect, but pretty good for a stocker. Anyways...its free if you want it.