Cold start AFR's always changing............

thething96 · Post by **thething96** » Sun Aug 02, 2009 11:24 am

Does not mater how many times I adjust ect and iat compensations, cold start afr's are always different from day to day. Specially when it's warm and I start the car. afr's tend to be at 17.5-18.0, and when it warms up, it's around 13.5. I've always had this issue. It was worse before, but after changing the iat sensor, it got a little better, but problem has always been there. I've adjusted compensations in any way possible, but no luck. Am I doing something wrong? Is anyone else having the same issue? Thanks............

b20beast · Post by **b20beast** » Tue Aug 04, 2009 9:58 am

Did you tune your batter offset tables? Can you post your cal and bin?

thething96 · Post by **thething96** » Tue Aug 04, 2009 2:49 pm

Yes, I did adjust battery offsets. Car is running RC550 high impedence injectors. At first, I used the original offset provided by ectune for those injectors, but ended up changing a little anyway. As soon as I get a chance, I'll post cal. Thanks....................

thething96 · Post by **thething96** » Wed Aug 05, 2009 10:12 am

Here's the latest cal. This one seems to be better, but still not very stable...

thething96 · Post by **thething96** » Wed Aug 05, 2009 10:14 am

By the way, setup is 98 USDM Type r, JRSC at 11 psi or so, CP 10.5.1 pistons, oem rods, arp rod, main and head studs, hondata intake gasket, all oem gaskets.......

b20beast · Post by **b20beast** » Wed Aug 05, 2009 2:55 pm

need the map as well

thething96 · Post by **thething96** » Wed Aug 05, 2009 3:36 pm

Excuse my neewbieness, but what map are you talking about?

thething96 · Post by **thething96** » Thu Aug 06, 2009 5:00 pm

Played with closeloop a little. Have it set that at 1200rpm, closeloop in at 0%, out at 1%. AFR's got better, but are fluctuating between 13.8-15.1. Any help is greatly appreciated. Thanks.......................

thething96 · Post by **thething96** » Fri Aug 07, 2009 7:52 pm

Is there anyone out there that can help me out? Please, this problem is very anoying. Had the car tuned with other software and it would never do this. Don't know what the problem is. Thanks...............

Almighty-Si · Post by **Almighty-Si** » Fri Aug 07, 2009 9:45 pm

Start a new cal from scratch and get the car started using the Injector Calibration tool in the tools drop down let the car warm and adjust battery offset. Let the car cool and then adjust ECT/IAT corrections. That's how I go about it and never have an issue. You adjusted the fuel table which is probably why it's not so stable.

thething96 · Post by **thething96** » Sat Aug 08, 2009 10:21 pm

Thanks for the tip. I actually did that, but the other way around(adjusted cold tables, then warm). Will make a new cal and follow your steps. Will post soon............

thething96 · Post by **thething96** » Wed Aug 12, 2009 11:18 am

I guess adjusting warm compensations first and cold later made a difference. The car still tends to lean out, but not as bad, and for about 10 seconds only. Thank you very much..