attn mustang92
 

if you do not have a speedo compensator for your 4.10's that could be why your car is shutting off. my friend has a silver 99 gt 5 speed with 4.10s and no compensator and he shuts off before the finish line of the 1/4 mile. hope this helps

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97 Mustang GT Rio Red w/ tan leather
Nitto NT555extreme 255/45ZR17 on all fours
Steeda sport springs
Steeda caster/camber plates
Offset steering rack bushings

I've had a couple people tell me that but this had happened a few times before the gear change. It just happens more often since the change, plus if I reset the EEC between passes the car will not shutoff but I do lose about 1 MPH at the 1/8 and 1/4 MPH.

I figure it's one of two things. One I run a UPR Big mouth filter which is a regular cone filter in the engine compartment (no air box) and I'm told that it may draw in more air than the MAF is reading and I'm leaning out on the top end, but I'm getting no audible detonation. Second is I just have a bad O2 sensor or other sensor and for whatever reason it's pulling (a lot of) timing out before I cross the traps.

I'm going to try an experiment and run the stock air box and see if it fixes the problem and also get the EEC scanned for codes.

Thanks for the input.

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00 GT, K&N, MAC Tree Killer, Pullies, 4.10’s, 2 chamber Flowmasters, UPR shifter, Weld Pro Stars, Nitto DR’s 13.35@100.02 (1.88 60ft)
88 LX coupe X-FHP, 12pt Cage, UPR K-member, 31 spline rear, full spool, more to come

definately scan the eec, the computers on the 96 and up modular cars are so dam sensitive. good luck, hope you get it runnin right.

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97 Mustang GT Rio Red w/ tan leather
Nitto NT555extreme 255/45ZR17 on all fours
Steeda sport springs
Steeda caster/camber plates
Offset steering rack bushings

Just spoke to a shop locally and after we scan the codes I'm going to finally put the car on the dyno and see how the A/F ratio looks like. Probably towards the end of next week.