The engine was taken out of the car and an overhaul (new crankshaft bearings, seals, piston rings and valve seals) was done . The engine was started on the ground and worked great. I converted the engine to single turbo (500 bhp). Engine still on the ground. I used the factory computer just to start the engine and it worked ok. I decided to install the MSPNP Pro ECU, followed the installation instructions. I tried starting the engine with the MSPNP Pro ECU hooked up. The engine backfired, did not start and a burst of hot air came through the intake manifold. I disconnected the MSPNP Pro ECU and reinstalled the factory computer but the engine would not start. On troubleshooting I found that all six ignition coils were damaged. I replaced the coils. The engine is starting again with the factory ECU. I would not attempt to use the MSPNP Pro ECU until I know what possibly went wrong ------ David
My car has 93000 miles.
My car has a manual transmission.
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