Pelican Parts Technical BBS - View Profile: sjf911

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12-10-2010 12:50 PM - permalink
sjf911

Hi Darin. It has been a relatively rocky upgrade from MS3+EDIS to MS3+MS3x sequential. MS3 in "upgrade mode" did fine with improved idle, etc.. However, I am having significant timing issues without the EDIS module resulting in excessive timing and detonation. I am not sure what the issue is as others are using the LS2 coils without issue so I suspect that the MS is more sensitive to crank wheel orientation and cam tooth interactions. Also, I may be have a ground offset issue so I am going to pull the intake and do a partial engine drop to replace the crank wheel with the Clewett 60-2 wheel, change to a Clewett VR sensor, and recheck my ground wiring. Unfortunately, I have less free time than I need to do all of this. The MS3x upgrade has turned out to be quite time intensive. The complexity in tuning is an order of magnitude greater than with MS2.
Steve
12-09-2010 09:00 AM - permalink
drmatera

Steve, I saw your post about the trigger wheel. Hows the MS3 conversion going?

Darin
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About sjf911

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Idaho
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Steve
1983 3.4L 911SC turbo, GT35R, flame ringed 8.5:1 JE's, MS3-MS3X sequential EFI, LS2(D585) CNP twin-plug ignition, full-bay intercooler, J&S Interceptor (twin 993 knock sensors/bridges), and working A/C. Another e85 corn panzer.