Hello,
As a novice mapper working on an Audi TT MK1 225 BAM I have changed the following maps;
LAMFA, LDRXN, LDRXNZK, KFLDHBN, KFMIRL and KFMIOP.
I did change the KFZW and KFZW2 from the 225 BAM maps to the 240 BVF maps but the ignition coils died, I'm not sure if it was rubbish coils, wrong spark plug for the requirement Bosch FR78X (4 cathode, can't change the gap) or the maps themselves?
I now have NGK U5003 Coils & NGK BKR7E plugs gapped to 0.7mm and have gone back to the 225 BAM KFZW and KFZW2 maps which is working as expected.
What I'm asking is after gradually working the performance up with 4 maps and the logging showing what I was expecting with each map, should I be looking at changing any other maps and does anybody have any comments\ideas around the KFZW and KFZW2 maps?
The car has the following mod's;
- Complete 3" exhaust
- Decat
- F23 turbo
- Stainless exhaust manifold
The head has been refurbished, new water pump timing belt etc, compression is good on all cylinders (180+).
I have 440cc injectors, up-rated fuel pump & new fuel filter but haven't installed these yet (the AFR is holding up well on the stock injectors & pump but the injector duty cycle is now over 90% so it's probably time to install the new injectors and pump).
Thanks
KFZW is the basic ignition angle map, you can use it to add or remove timing. KFZWOP is not a timing map, its only used by the ECU to determine load/torque/actual torque etc. and the ignition angle efficiency by comparing actual ingition values to KFZWOP values, and hence that value results in a factor later used in torque calculation.
However, if you increase kfzw in non knock limited areas its possible that ecu will reduce the ignition values more than it has to resulting in poor running, so if you increase KFZW there , you have to increase KFZWOP in the respective areas too.
there are also additional factors that contribute to zwgru but that is it basically. If you changed KFMIOP load axis you have to change KFWZOP map too, use maybe me7tuner wizard for this.
