11:1 A/F at idle

Special K · Post by **Special K** » Tue Dec 09, 2008 3:04 pm

96 spec DC2 Type R
JDM K20A
PRC ECU
4-1 Swap Header/ no Cat
A rear appearance for me on this forum,

Everything was fine until I updated to 1.3.2
now there's a 11:1 A/F that I can't shake....
The STrim says -27% all the time at idle,
and even if I take out the 27% the A/F would be around 14:2
and the STrim will still say -20% or so.....
Tried different Cals. No change.

BTW all this is in closed loop.

Post by **Spunkster** » Tue Dec 09, 2008 5:50 pm

Try going to Online, Tools and clearing security, then closing the program an then re-open Kmanager and upload your calibration.

Special K · Post by **Special K** » Wed Dec 10, 2008 3:29 am

Thanks for the quick response, but I think I did that also. I'll try it again.

BTW. what pressure reading should I get at idle at sea level? I'm about 4' above sea level here and the MAP reads 16"...

Post by **Spunkster** » Wed Dec 10, 2008 10:21 am

That all depends on your engine and and the cams being used. It's not something I can tell you it should be X" with these modifications.

Special K · Post by **Special K** » Wed Dec 10, 2008 7:04 pm

I suspect that something's wrong with this new version,
My car idles @ 16" with an RBC Manifold. Before the software change it was around 20-22".
I'm tempted to try going back a couple versions (but that's not recommended) so what now?

And further more, today I helped a friend Dyno tune his car.
k20a, 4-2-1 Swap header,Individual Throttle Bodies,3" exhaust no cat,Skunk2 stage2 Cams,and of course KPro(PRB ecu). base run 201whp....
At first Kpro would not accept changes,even after clearing security,the overlay would say remove 16% fuel... we make the change,make a run and it would say take out 16%. so after an hour of that we decided to upload three times.. i.e. once for the change of values then hit the upload button twice after that.... this worked for about 4hrs, then started not accepting changes.. we then hit the upload button 4 times to make changes.Now this must all sound strange, but guess what after all that the Hp after 6Hrs of dyno.....200whp.

Btw. this car also idles with a 11:1 A/F in closed loop...... Strange