hi guys,
i really have a big problem and will be very thankful, if someone of you can give me a tip how to deal with it. I'm running MS1 on a bmw old m20 engine using the original 60-2 wheel and vr sensor. Everything is working perfectly but the engine won't rev past 3500rpm. It's like a launch control. To read the signal i'm using lm1815 mod. I've tried to put resistor on VRIN and nothing changes.
won't rev past 3500rpm
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slow_hemi6
- Super MS/Extra'er
- Posts: 4122
- Joined: Fri May 07, 2004 3:33 am
- Location: Australia
Re: won't rev past 3500rpm
I am only using 36-1 with lm1815 but did have an issue around 3000rpm also. I run the lm1815 with pin14 to ground (no timing resistor and capacitor). I have pin12 connected straight to pin6 of the MS's opto isolator and I had to delete the resistor from lm1815 VR input to ground, (300r).
Find the Manuals up top under Quick links: Manuals. 
Cheers Luke
Cheers Luke
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Matt Cramer
- Super MS/Extra'er
- Posts: 17507
- Joined: Thu Apr 16, 2009 8:08 pm
Re: won't rev past 3500rpm
Please post a tooth log of what happens at 3500 RPM.
Matt Cramer -1966 Dodge Dart slant six running on MS3X