I'm immature and want flames out of my exhaust. I've already played with KFTVSA, KFZWMN (and the other timing maps), and KFLF, and I can get some good loud noises, but I'd rather have a quieter noise with a big flame out the back. How can I add more fuel in low load? It looks like the only option to adjust low load fueling is KFLBTS, but being the temperature-triggered map it seems like I should be using something else to richen the mixture. KFLF doesn't seem like the right way to go, and LAMFA only appears to be load 80 and up (but my definition has broken axes).

I'm also not sure if there's a way to trigger open-loop fueling on overrun that anyone knows of.

If anyone else knows how to get those huge flames (like red and billowing, not the jet-like ones you get on a really powerful bang), I'd like to know since I'm also not sure how to ignite it other than the hot turbo. Yes, I know this probably isn't great for the car.

ECU is 4b0906018P, 2000 A4 1.8t ATW

Check for LASOAB

LASOAB is single 8-bit value. Factor = 0,0078125
Address depends on firmware version you using
0x15358  in fw 352750 (4B0906018P 0006)
0x15347  in fw 396635 (4B0906018P 0009)

It looks like LASOAB is controlled by AEVAB, which I understand to be injector cutoff? So, if I'm following, when the car shuts off the injectors, it targets a slightly lean AFR to avoid damaging the catalyst. Does this target AFR also affect overrun (after letting off throttle, during the injector shutoff delay set by KFTVSA)?

If so, as I understand it, letting off the throttle will immediately make the ECU target LASOAB using the MAF sensor readings in open loop, and then once the time delay set by KFTVSA ends, it will cut ignition entirely?