Subject	You have an upgraded ECU, no?
Posted by	SirpriZ on March 25, 2006 at 8:51 PM
	This message has been viewed 33 times.
In Reply To	I dont know either. Going to look at the other runs posted by Spddracer on March 25, 2006 at 08:26 PM
Message	I think I saw Stillen ECM in your profile. Stillen uses JWT programs (or used to). So there should be no way you are anything close to maxing out the injectors at 11 psi, especially running as lean as you are. In fact, look at your A/F graph: as the RPM increases, the A/F ratio drops (gets richer). I don't think injector size is an issue. Could just need some fuel tuning with an aftermarket fuel programer. Still kinda wierd that it was as lean as it was with the ECU upgrade. The ever popular boost leak causes a rich conditon, so that ain't it. Fuel pressure would have been the first thing I'd check, but you already did that, so I dunno. Were you getting 43.5psi + boost pressure for your fuel pressure? Good luck, Mark
Follow Ups	My Dyno sheets and Vids from today. - Spddracer 17:50:21 03/25/06 not bad for almost 12 psi. (n/m) - natottz 18:41:34 03/25/06 Firefox "Image Zoom" owns. Sorry, just got it and - dogpile 19:08:02 03/25/06 Resized :) - Spddracer 19:22:44 03/25/06 It looks pretty lean. Where was the A/F monitored? (n/m) - Agner.S(CT) 19:41:27 03/25/06 LR tail. (n/m) - Spddracer 19:44:27 03/25/06 That could be the reason for such lean numbers. Most of the - Agner.S(CT) 21:03:05 03/25/06 Second. Good power numbers for 11+ psi, but - SirpriZ 19:50:27 03/25/06 Correct. - Spddracer 20:00:31 03/25/06 Wonder why the A/F ratio would change - SirpriZ 20:13:40 03/25/06 I dont know either. Going to look at the other runs - Spddracer 20:26:18 03/25/06 You have an upgraded ECU, no? - SirpriZ 20:51:55 03/25/06 No boost leaks. Tested before going :) - Spddracer 21:06:02 03/25/06 my first dyno, before and after. - lagmonster 21:10:35 03/25/06 Good lord resize. The staple is bigger than my 19" monitor. (n/m) - Spddracer 21:18:08 03/25/06 whatsthegoodword 21:35:50 03/25/06 sorry I'm on a unix machine. - lagmonster 21:41:36 03/25/06 I think he screwed up the rest of the forum-everything after - whatsthegoodword 22:41:03 03/25/06 Wow, I see the fibers in the paper. (n/m) - Kez43 21:56:14 03/25/06 resize of dyno and suspension work before and after. - lagmonster 21:59:53 03/25/06 A/F looks lean, but look where the A/F is right before - Ash's Z 23:50:28 03/25/06
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