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Old 05-07-2007, 07:52 AM   #2049 (permalink)
Maximal
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Join Date: Jan 2002
Location: Painted Post, NY
Drives: '91 Stealth "ES"
Trader Rating: (183)
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Default Re: ---===The Official MAFT-Pro Thread===---

So I unplugged the narrowband and the car idled fine. A/F was steady. At WOT it was pretty lean (even with the mainscale set to 14 to compensate for the overclocked ECU) but a little tuning helped that out and the nitrous is jetted so rich the A/F was still below 10 with that.

I thought I was set and just needed a little tuning and to figure out the cold start issue until I got to Ocean City. The car was fine the whole 400 mile trip down there but once there the idle issue started again. At idle the RPM's would just drop and if I tried to hold the RPM's and let them down gently the A/F would fluctuate and the RPM's would surge and drop until it eventually would die. However, sometimes it would idle fine and the A/F would be steady.

I thought at cruise it was fine except for being a little rich. 6 hours into the trip home the car started missing and I noticed the A/F went from the usual 13/14 at cruise till 16/off the gauge. I pulled over to get some food and adjusted the mainscale and the low throttle at around 3000rpms and it was running more rich than before making me think I didn't even have to adjust them.

So...any ideas on what it could be? I really want to get this thing working but I've already been messing with it for a year and without any solid documentation it might be better to go another route.

One question I do have on settings is what should the VE's be set at..the defualt 2.5 and 4 or should they be set to 0? I've heard both in this thread.

Terry
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