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Do a search for words like hesitation, bucking, cutting-out, surging for Carreras and kick back and have a good read.
You will pour through hours of stuff.
Maybe your DME (the ECU) has a bad solder joint? Once the DME gets hot, it can cause the board(s) to expand opening a solder joint(s) and give you fits.
Of course, the DME relay under the seat has done the same to others too.
Good luck as there is a lot of things that can cause this.
Also, an ignition coil can do the same as they are "self healing"......
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, Treadstone full bay IC, 70mm TB, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MicroSquirt AMP'd w/GM smart coilpack, Bilstein coilovers, Tramont replica Speedlines (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel
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