I've got an MSII 3.57 running a VR input from a Bosch 60-2 toothed wheel. The engine is an Alfa Romeo 2 liter twinspark running ITBs (38mm Hyabusa). I can get the car to start, but it runs roughly and I have to open the bungs I put in for idle bypass to get it to start. I think that the biggest symptom I need to fix is the jumping timing. It has about a 10 degree swing.
I've got an Oscope and the VR signal looks clean, so I believe that the pots are adjusted correctly. I'm not seeing big variance in my sensors, so I think that my grounds are good.
My MAP seems a bit high, running about 83kPa with the throttle closed. This doesn't seem right either - I would expect a lot more vacuum.
I'm a n00b so I expect I'm missing some basic stuff, but nothing is jumping out at me in the forums. What am I taking for granted that I should reverify?
Regards,
lgowin
Spark Scatter
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Spark Scatter
Could be an odd settings issue. Could you post a data log of the engine running, along with your MSQ file? This will shed some light on whether the MS "thinks" the spark timing is steady or has accidentally been set up to make the spark scatter.
Re: Spark Scatter
Matt,
I reloaded the code to blow away any errant configs. That seems to have sorted out the spark scatter. I don't have my ignition configs fully sorted yet, but I'll keep working through the Megamanual and forum archives.
Thanks,
lgowin
I reloaded the code to blow away any errant configs. That seems to have sorted out the spark scatter. I don't have my ignition configs fully sorted yet, but I'll keep working through the Megamanual and forum archives.
Thanks,
lgowin