Originally Posted by colo_evo
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Gears work fine, spark plugs are OEM, Act clutch&flywheel, Added full tank of 93, fuel injector cleaner & Octane booster. Car takes a few seconds to turn on, Engine shakes, exhaust backfires here and there. Gas pedal doesn't react to my intentions. Feels weak and doesn't pick up speed as I want it to. When driving in 5th gear, its even weaker. I have to idle pretty high to engage. 2-3k to start cruising. Clutch pedal is not adjusted since its hydraulic, should adjust itself is what my mechanic friend told me. Installed a cone filter after my clutch&fly. Took it off and put the stock airbox back on; same resulting problems still occur. Exhaust backfires once and later again and later again. Engine seems to be struggling as of right now. Could it be running lean? Not enough fuel coming through? Fluids? Somethings clogged up? Car had been sitting in garage a few months before all the new installation. Can't go WOT since I still have to break in my clutch and fly..Been cruisin at normal speeds lately. Last resort is to take it to a evo specialist. Thanks for any advice