Re: MAFT Gen 2 - Anyone?
Ok guys, went to the track this weekend and had some fun. Was running about 18-19psi to redline, pretty good, however when I ran 3rd gear out to the line, I had almost no acceleration at the top end. Above ~ 5500RPM still at full boost my AFR starting going slightly lean (~13.5) it was upper 11s low 12s prior to 5500rpm. So in essence I could NOT break 100mph on the 1/4.. the car just wont go any faster at that higher rpm, It should be able to accelerate fully to redline I would think. I tried adding fuel in the higher rpms on the high-load setting, and a little on the mid-load setting. I also added fuel at 300gms/sec and 400gs/sec (like +15%!!!) and still nothing. Think I might be hitting the maximum output on my 450 injectors? or maybe just still some more tweaking with the GenII? It ran great all the way down the track until I got in those higher rpms in 3rd gear (it also leans out a bit in 1st and 2nd, but I dont run those out quite as hard as 3rd... I've never gone to 4th prior to the finish line) Obviously 1 option would be to go to 4th earlier and hopefully I can pick up acceleration there, but I dont want to limit my 3rd gear to 5500rpm max...
thanks for any advice!
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16Ts, ATR downpipe with high-flow cat, MBC (in cockpit), Kormex'd, 560cc's, Walbro Pump, MAFT GenII, 3.5" GM MAF Blow-through, HKS SSQV '07, EGR Blockoffs. Rebuilt 4 bolt block.
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