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Old 26th July 2008, 01:45 AM   #1 (permalink)
Madden
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Join Date: Nov 2004
Location: Berkshire
Posts: 2,078
Air/fuel reading and mapping

Well now my car is back on the road again i can finally try to learn to map.

I have got the Innovate LM-1 wide band and the fclogit kit.

I know the car has been running really rich from when i have been on dyno's and i thought it would be a good time to learn to map as it has been something that i have always wanted to do. The car started out being 500bhp at the hubs and 408ftlb at the hubs. Since i have reshelled the car it has been down on power. I replace the fuel pump and fuel filter and the car came back to life but still a little short of what is used to be. The car now makes 508bhp at the fly so i reckon I'm down say 60-70bhp and the same in torque.

I logged my a AFR today while driving. This is a third gear run at 1.5bar under load.


I know the car is running really rich on idle and at the top end. On idle the AFR's are 10.2? Im under the understanding that should be around say 13?

I only want to start with the fuel map and then i will start to play with the ignition map as that is really safe and i have never seen any knock above 30 of my power fc.

What would the be the best kind of AFR's ? I think the fueling is fine when coming on boost but once on boost it is way to rich. Should i be aiming for around 11.8 on boost?

I know alot of you guys have played around with mapping so if you can help i would be very grateful.

Cheers

Jamie
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