TriniRotaryMan |
01-17-12 08:46 PM |
Hesitation problem when hot with FD3S RX7
I started to get this hesitation problem with my car. When the car is cold it will start and rev normal but after a while when it gets hot, it starts to hesitate and backfire upon revving.
The car has a knightsports ecu, greddy front mount intercooler, air pump was removed,a new set of series 7 sequential turbos, full free flow exhaust, the engine was rebuilt a year ago, magnecor plug wires, new coil packs, new plugs, all sensors checked and changed where necessary, walbro fuel pump, aeromotive fuel pressure regulator, new fuel filter, new engine harness, apexi power intake, HKS grounding kit, koyo 3 core radiator, battery relocated to the trunk.
We swapped all the main parts on the engine and still could not solve this problem, the only item that was not changed yet is the ignitor and its harness. The car starts perfectly and revs but when it gets hot this problem starts. We even changed it back to the stock ecu as well and no progress.
Any ideas to solve this problem?
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