Under about 5+ lbs of boost I get some ping under boost. AFR is about 11:1, so should I remove a degree or two of timing? Timing is currently retarded 1 degree per psi.
Sorry about the total newb question but I want to get this engine tuned right.
Ping under low boost
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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.
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.
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Minami Kotaro
- Helpful Squirter
- Posts: 42
- Joined: Sun Sep 12, 2004 3:41 pm
- Location: Somewhere in TN
Ping under low boost
1967 VW Beetle
1915cc turbo ... only 3lbs so far
Controlled by MegaSquirt and EDIS
v2.2 board, MSNS-e 024s11
Check out my ongoing success story.
1915cc turbo ... only 3lbs so far
Controlled by MegaSquirt and EDIS
v2.2 board, MSNS-e 024s11
Check out my ongoing success story.
What rpm and what is the timing at when it pings.
To play it save, I would pull out about 10degrees or so and roll it back up some. If you are getting pinging, then the advacne is way too much.
If you had really safe timing and compared dynos, you could watch the power increase as the advance is increase....then you will get to an adv number where you won't get anymore power. SO you increase another degree, and another, and no pwer in being gained...then you add another degree and it losespower and my ping. The point is, if it is pinging, then you could have a window of like 5 degrees where you are over the max advance you need.
To play it save, I would pull out about 10degrees or so and roll it back up some. If you are getting pinging, then the advacne is way too much.
If you had really safe timing and compared dynos, you could watch the power increase as the advance is increase....then you will get to an adv number where you won't get anymore power. SO you increase another degree, and another, and no pwer in being gained...then you add another degree and it losespower and my ping. The point is, if it is pinging, then you could have a window of like 5 degrees where you are over the max advance you need.