I am an idiot (zone fuel link ecu)

[Doctor 30]

A while back I was pissing and moaning that my car lacked grunt over 5500rpm and then it was real bad after 6200. Well after receiving my tuned car back from the mechanic I decided that seeing as it ran crap anyway I was going to set the zone fuel figure from 60-65% + 8% for acceleration up to run at 90% at 11-15psi boost.

Well pull my pants down, spank my arse and call me charlie. The car ran to 7500 rpm in 1st and second gears. So I advanced the timing up to 20+ degrees and it went even quicker. It was pulling 0-100 in 6 seconds flat but I haven't measured it since because the car now literally our runs the speedo so I can't time it. I gave it a boot on a private test track and I pulled 175 (give or take for speedo error) in 3rd up around the 7200 mark and it wasn't slowing down up top. My diff is way too tall.

Needless to say fuel economy is now diabolical and I can't run it on regular unleaded anymore. I also can't floor it in second gear around corner because the rear just lights up. I can now floor it from rest and when the boost spools up the tyres will chirp on concrete and coarse bitumen especially if its not even (I am running 225's on the back, cheap as tyres though)

Glad I didn't buy a fuel pump.

So the lesson is, if you have a programmable richen the bugger up to the max injector capacity, advance the timing and let the fun begin..

[Jordan]

Sounds like: Fuel Zone = Duty Cycle for your injectors?

[Doctor 30]

Well thats what I figured it must be. Each zone is based on rpm and manifold pressure and then you program it to run each zone. As it reads as a % figure I thought it might have been air fuel ratio which it obviously wasn't.

[Boof]

Now go and stick the thing back on the dyno and check to make sure its NOT pinging or leaning out....