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1) It was Ari, not me, who recommend retarding your timing! Furthermore, when you changed timing to 17/18 BTDC, you have actually ADVANCED the timing! Try it at 14/15 BTDC, see if that works. If that helps, search "timing retard mod" or similar on this board & the Performance board
2)Bentley specifies the knock sensor position to be 20 degrees from straight forward. I'm not sure what difference this makes.
3)If you had your knock sensor removed from the block and well padded, and boost behaved the same, that might mean your APC box is flakey - do you have a spare to try? Since you said you pinched off the "W" hose from the APC Solenoid and got MegaBoost, your turbo plumbing should all be in order.
APC doesn't know about fueling, and only reduces boost when it detects knock...
As I said, you're getting closer to solving this!
Jonathan
Posts in this Thread:
- Turbo boost Analysis questions? 92 900T, jkel, Fri, 28 Apr 2006 12:25:49
- Re: Turbo boost Analysis questions? 92 900T, Ari
, Fri, 28 Apr 2006 13:35:07 - Re: Turbo boost Analysis questions? 92 900T, Jonathan Scupin
, Fri, 28 Apr 2006 13:09:07- Re: Turbo boost Analysis questions? 92 900T, jkel, Fri, 28 Apr 2006 15:00:23
- 900 turbo wheel selections, jkel, Fri, 28 Apr 2006 17:12:54
- Re: Turbo boost Analysis questions? 92 900T, jkel, Fri, 28 Apr 2006 16:57:01
- Hmmmm....., Jonathan Scupin
, Sat, 29 Apr 2006 14:56:54
- Re: Turbo boost Analysis questions? 92 900T, Jonathan Scupin
, Fri, 28 Apr 2006 15:42:33 <-- Viewing This Message
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