Hi everyone, I’ve been fine tuning my ignition advance at idle to see if I can improve idle stability and smoothness. I started with 16 degrees since that was what I had my distribution set at before switching to EDIS. The idle was stable but wasn’t as smooth as I’d like (some misfiring, etc). I eventually determined that 13 degrees resulted in the best idle stability and smoothness, but it seems a bit low so I wanted to run it by the experts to ensure I wasn’t missing any obvious concerns with running so little idle advance. I don’t have an EGT gauge so I don’t know if reducing idle advance has increased internal temps.
Some additional info on my engine:
2 liter SOHC, 2 valves per cylinder (BMW M10)
Mild port and polish
292 degree cam
1 5/8†header
Max advance @ 100 kPa: 36 degrees
Idle speed: ~1050 – 1100 RPM
Thanks,
Robert
Idle Advance Question
Forum rules
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
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73Inka2002
- MegaSquirt Newbie
- Posts: 18
- Joined: Sat Sep 18, 2004 2:21 pm
Idle Advance Question
Car Info:1973 BMW 2002
MS Info: MSII v3.0, Code 2.35, MegaTune 2.25, EDIS-4, Innovate WB
MS Info: MSII v3.0, Code 2.35, MegaTune 2.25, EDIS-4, Innovate WB