F.I. Long-Tube Headers installed - Review/Pics/Vids/Dyno

Originally Posted by semtex

You know what kinda confuses me though? This car has made more power before. I dyno'd after the underdrive pulley went on, back in May of '09. Check it out. I hit 330whp. This either shows how finicky dynos can be. Or it shows that my car has lost power as it's broken in, had more miles put on, etc. But I only now have 10,500 miles! So it's not like it's all worn or anything.