09-01-2013, 03:33 PM
Join Date: Jan 2013
Location: Huntsville, AL
Total Cats: 1
Engine Cuts out On Track
Put my car on track first time yesterday. Have had car for 1 year. Did mostly suspension and chassis work. Cleaned and sealed motor - timing belt/water pump etc, otherwise no work by me on motor.
Here's some info.
94R package car - 100k motor - never opened.
Have a Turbo from a 300Z factory turbo set up.
Manual boost control running about 10psi.
MiataLink piggyback (at least I think that's what it's called) with a "tethered" hand programming unit attached to my ECU behind passenger seat.
I've never touched any of the engine management stuff except for the manual boost adjuster.
Wrapped exhaust manifold and down pipe but not the turbo itself.
On track yesterday at 90 degree+ ambient temperature (TGPR in Alabama).
Car ran great for 3 - 4 laps - pulled strong up to about 6000 where I was shifting. Then it would just shut off for 1/2 second or maybe 1 full second. Then come back on for 2 seconds to 4 seconds.
Tried a new fuel filter as most simple fix - but of course no help.
Ran with hood off the car for a session to mitigate underhood heat, but same result.
Anybody have a similar experience?
I don't have much experience with turbo motors or aftermarket engine management, so I'm looking for any suggestions anybody may have. Any help would be greatly appreciated.