RB20DET EPROM HELP,K CONSTANT VALUES Z32 MAFS,550cc RX-7 INJECTORS

[craz4240]

I had a tune done not that long ago,the load scaling was off but it was since corrected by the source.

Modified for 550 injectors,GT2871R hybrid turbo,Z32 MAFS, and Running 18psi

Now the thing is the first tune was all over the AFR map ran super lean at idle 22.4:1 to be exact and was hitting as low as 7:1 under load

The new map when I first put it in was idling at 7.4:1.I was advised by the tuner that I may have to adjust the k constant up or down depending on if it was running rich or lean.

If the hex address in the map I have is correct the k constant is at 7F2B and it is a 4 digit hex.When I got it it was set quite high so I leaned it up a little still very rich....I had done one modification last night that set the k constant at 200 it idled very nice and at 13.3:1 for a few mins but it got increasingly rich as it idled.I turned the car off and set the k constant at 185...the car wouldn't even start with this setting.But still the AFR's are all over the map and the car idles very crappy.

I am guessing that the load scaling is not right yet or I am modifying the wrong address or not doing it correctly..I have tried so many different settings from 217 down to 185 in small increments.I have used the formula I read on the z32 ecu mapping tutorial for modifying the k constant to modifiy it from stock and no dice.

Does anyone have any ideas I am at my witts end here I haven't dove my car since July.

Thanks a milion

[jdmser]

Sorry to see your still having problem with it. Have you check the signal from the maf just to ruel that out? Also, anytime mine would run anything under 11 afr I would have to change the plugs out or it wouldn't start. Hope yah get it figured out. I know how it feels, I hadn't driven my car since July of 06.