EFIDynoTuning Forum

All

Just getting going again and have a few questions about the latest .adx.

Which history table is the one for dialling in MAF. Older versions had just a few, the latest has LOTS! There was one which was MAF v FE%. Easy. Not sure which one is best now.

It appears IPSIBR has disappeared. The write up in the GUFX thread suggests to simply get ISCDC to <35% by adjusting the idle screw. I am assuming ISCDC the same as ISCDTY. Mine appears pegged at 0.15 at idle. Does that mean I need to close the idle screw?

Thanks in advance

the different ones are for different purposes as per their titles

typically the first one at the top is used its the hegos vs the part throttle flag so

ipsibr is still their but it includes the kam correction on eec-v. Eec-iv is still ipsibr its name is the pid_n name in the same location it was before.

yes iscdc and iscdty is the same

.15 is perfect so long as your at your idle rpm

Thanks, that's great.

My idle is about 50 under desired, with ISCDTY at 0.15 and DESMAF_PID_N at 0. How can this be increased?

why would you want to increase it thats perfection

Well, clearly there is no need, thanks. That being said, I was expecting to have to do something to dial in the warm idle.

I have been tuning on A9L and progressed to A9L2 for the mechanical idle. When I got there, IPSIBR was way high and I was starting to make adjustments to get it down. I had left it for a while and along comes the latest A9L2. Why not! I downloaded the latest earlier this year, applied the basics along with what I’d done for fuel up to WOT and also load. Went pretty well so I looked at hot idle. Now IPSIBR = 0 at all times. Driving. Idling. Everything. ISCDTY sits at 0.15 at idle, never lower and lifts during driving. Idle is 725-750RPM warm.

So it looks good an paper but it hasn’t been touched.

Is there some magic in the latest A9L2 that takes care of hot idle completely?!?!

Ispibr will only be active at idle it won’t change with rpm increase. You did it right by dialing in fuel first. Mechanical idle is just that purely mechanical so it only relies on the throttle stop being set correctly. It sounds like yours already is but it is odd that ispibr is 0 at all times? Unless somethings changed decipha’s latest stuff allows it to go negative as well. Did you dl all 3 of the latest files?

yeah thats odd indeed

Yep - downloaded the .bin, .xdf and .adx just after the new forum kicked off (but before the latest .adx and version of TunerPro).

So I ran an old log with the new .adx and the DESMAF_PID_N appears as expected. Ran the latest log with an old .adx and the DESMAF_PID_N just sits at 0. Throttle stop has not changed between the two logs.

Is there something in the .bin I could have messed up to cause this? Below are the only changes that have been made from the downloaded version. I did do something out of order but thought I had that sorted.

02/20/2021 13:19:56 Scalar: SP** (WARNING) AHISL - Injector High Slope **SEE COMMENTS** changed from 19.641 lbs/hr (0x13A4) to 28.980 lbs/hr (0x1CFB).
02/20/2021 13:20:09 Scalar: SP**ALOSL - Injector Low Slope [lbs/hr] changed from 38.510 lb/hr (0x5AB6) to 34.606 lb/hr (0x5184).
02/20/2021 13:21:18 Function: SP** FN389 - Injector Breakpoint (lbs/pw) (FUEL_BKPT) changed.
02/20/2021 13:22:28 Function: Crank PW ECT Modifier - FN348 changed.
02/20/2021 13:26:21 Function: FN035A - Boost Threshold (Peak NA Perload Scaling) changed.
02/20/2021 13:27:48 Function: SP** MAF Transfer - kg/hr - FN036 changed.
02/20/2021 13:33:24 Scalar: SP**_SARCHG - Engine Size Displacement changed from 445.61 Cubic In. (0x29CF) to 302.01 Cubic In. (0x1C56).
02/20/2021 13:48:54 Function: Injector Offset - FN367 changed.

That means the ecu has saved the idle air correction to KAM so you don't have an error reported.