Thread: NEMU Cold Tuning

I have one, I'll do another for just this point though. PM me your email if you could. Thanks Dave

Do you have O2 correction turned on, or are you in open loop all the time?

The best bet is to shoot one of us your TCD and TCL and we can take a look!

02 is on, I think thats why its fine when it warms up. I did a log, will send to you both. Not as bad on this one because it was dark and my headlights were on. Got some sort of draw that makes it richer, thought I fixed it by regrounding a bunch of stuff but came back. But I will send the old one I did as well. maybe you'll guys see something I'm not.

Did you resolve your issue?

No, but I helped it a bit. I havent messed with it for a bit. I did a remap of the fuel map thinking the number i had for closed loop might be messing with it, So I'm gonna upload that the next nice day I get to try it out.

So interesting enough, I've been having the exact same issue on my DET B15. I've been adding more and more fuel in the cold ECT table, but I think TPS enrich might need to be tweaked.

If you figure it out let me know, it's annoying haha

Indeed, only happens with the DET, VE+T seems to be fine. I wonder if it's how the IACV works. Also I do have my 90 second air regulator bypassed (the one that throws your idle to 1500 rpm for 90 seconds).

That the one with the coolant lines under the manifold? Mines still on. I noticed I adjust the fuel map cells to 206 in the idle and cruis area and it seemed to help not let it go AS lean but still jerking and what not. I got a really good log of it the other day you can see the RPM's just going up and down really fast adn the a/f spiking.

Not coolant, 5/8" air line.