Going standalone with ITBs

[Whizbang]

now the fun part. figuring out how to tune it.

anyone have an ignition map in kpa v. rpm for an m42 or maybe m44 that is still na?

[apexspeedtech]

I don't but am happy to try and help you sort it out. Have you got it to idle?

[Whizbang]

okay i can't figure this out.

i get a bucking at about 2300 rpm. shows in the log as spikes in AFR. doesn't go away with large changes in fuel or ignition timing. Doesn't go away with tps or speed density based loading.

Pretty sure the timing is all set correctly.

Its like nothing makes it change so i can't figure out how to get rid of it.

[apexspeedtech]

Originally Posted by Whizbang

okay i can't figure this out.

i get a bucking at about 2300 rpm. shows in the log as spikes in AFR. doesn't go away with large changes in fuel or ignition timing. Doesn't go away with tps or speed density based loading.

This is a cut function. Either its a crank sensor issue, where its losing track of the 60-2 at speed, or its commanded. I’m not in front of the AEM Tuner software right now, but if you send me your map I’ll look for it. Either decel fuel cut or a commanded fuel or spark cut. You can email to questions@apexspeedtech.com.

Cheers,
Neel

[Whizbang]

awesome. ill send over a fresh log this evening as well. Im a little worried it's in the wiring since the "easier" stuff is dropping off the list quick. :/

[apexspeedtech]

Originally Posted by Whizbang

awesome. ill send over a fresh log this evening as well. Im a little worried it's in the wiring since the "easier" stuff is dropping off the list quick. :/

If its a wiring issues, I wouldn’t expect it to be consistent, unless:

1. Battery Voltage is dropping under 10V at 2300RPM
2. You have swapped Crank + and Crank -

Cheers,
Neel

[Whizbang]

i sent an email. Well two because i accidentally clicked send too early.