i everyone I'm new to all this, I have bought a R26 and it seems to be really jumpy between 50-70 mainly. It's there all the time I was wondering if it could be bad plugs or coil pack? I do occasionally get the engine light flashing and when reading the code says about a multiple miss fire? Any ideas? I also have a power flow exhaust system on the car which is too loud for me would anyone be interested in a swap for standard?
