DIY_EFI Digest Tuesday, November 16 1999 Volume 04 : Number 647 In this issue: Motronic 4.1 newbie--fixed it! convering info. See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Tue, 16 Nov 1999 10:57:22 EST From: "Derek Kaznoski" Subject: Motronic 4.1 newbie--fixed it! I disconnected the battery, but this didn't help. However, while inspecting the joints between the plenum and engine, I noticed a large 3mm gap at the first cylinder. I repositioned the rubber sleeve and the car is running and idling again. Needless to say I'm psyched! My little mishap with the injector connector which caused the backfire was ironically my saving grace: the backfire blew the sleeve far enough out of place that even an idiot like me could see the gap. After I repositioned it, I could no longer hear the hissing sound here. I'm concerned, however, with the fact that the sleeve is spanning a gap of about 2 to 2.5 cm and just barely covers it. It seems that the plenum chamber isn't close enough to the engine here. Any tips on how to adjust the positioning of the plenum here? The idle is still a tad low, but basically the same as when I purchased the car. I think it would be better if the plenum were properly positioned, but maybe not. It just seems that malpositioning here would cause subtle airflow changes which could adversely affect performance. Also, the AFM currently on the car is not the original. The previous owner replaced the original with a refurbished one, but then found that the original wasn't bad after all. I still have the original one. The refurbished one feels much stiffer than the original, though still has smooth operation. The original one has noticably less resistance in its flapper opening. Even after detensioning the spring by 3 notches in the refurbished one, it's still a lot tighter than the old one. Should I put this old one back on? Would this improve idle/performance? (I know there is a lot of debate over this) Thanks, Derek '90 Alfa Spider ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Tue, 16 Nov 1999 12:08:01 -0600 From: Shawn Benso Subject: convering info. Hello. I am new to this list. I was wondering if someone could possibly help me? I as wondering if anyone has tables of timing and fuel maps for 4th gen. F-bodys that have LT1s? I have a haltech e6gm and was looking to implant these values into the Haltech. I need the stock maps in ms of injector pulse width vs. rpm vs. load for fuel maps and advance vs. rpm vs. load. Is the info. in the "Binary EPROM images from GM ECMs" section pertinent to my question? If so, how do you convert this info. Any info. is greatly appreciated. Shawn ------------------------------ End of DIY_EFI Digest V4 #647 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".