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Old 11-28-2006   #10
xveganxcowboyx
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Join Date: Nov 2005
Location: St Paul, MN
Drives: 95 M3
Posts: 1,027
Re: Knock in 1st gear

No, I have ordered the evo 8 fuel pump and injectors. The fuel pump will be going in as soon as I get it, but the injectors will wait until I get some fuel control.

The car is a 91 TSI AWD. Big 16g, 2g manifold, 3" exhaust, boost controller set at 14psi, rewired stock fuel pump, egr and vacuum lines removed and capped, FMIC (a few small leaks, but nothing major). I can't remember everything right now that's going on in the engine bay. No major changes. Compression is low, but stable (110 to 120) which allowed me to run 17-18 psi on my 14b with no knock whatsoever.

I have tried to figure it out on my own, but have come up short. When it was knocking through the lower gears (most in first, but lots through third) I thought it was my dying 14b causing it. The knock was reduced when I changed the turbo, but I'm still having problems. The problem is it started without any major changes being done by me and I can't think of what would cause this condition.

So to reiterate the symptoms: Knock starts at any boost in first gear at both partial and wide open throttle. Rises to mid twenties at least which causes timing to be pulled heavily (car feels very doggy). I may be getting a little knock in second as well. Third on up runs smoothly with no knock until I start running out of fuel.
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