[cupojoe]

I am on this forum cuz a buddy of mine is a mechanic and has a friend he helped upgrade his tuning. the tuning (dinan tuned) was set back to factory tuning from europe? he is now getting a code from the check engine. the car runs awesome, super throaty , fast and responsive. he is getting a misfire though and suspects a couple things.....it has factory spec plugs in it, and he suspects it needs a hotter plug, what plugs would this be? or performance injector upgrade needed? what should be done to fully take advantage of this dinan tuning? we want the computer to be happy and the thing to run like a super bike. any ideas? the plugs are weird colors, green and yellow??

any direction would be great. fuel additive? hotter plugs, hotter coils? I am a clueless old jeep mechanic that is interested in bmw power. i want my buddy to have this thing full tilt!

Thanks! Cupojoe in the mo'