had a little bit of the winter fuel smells that needed to be dealt with. I originally thought it might be a serioous problem until i found the leak near the regulator, and tightened it. I have had people tell me that sometimes when I downshift and get on it, I throw a bit of smoke. I have just been under the impression that meant I was running a little rich. To be completely honest, I am running out of things to do to get more from the car before larger turbos, and want to justify the money spent and the extra gadgetry wired in. I am a little weary of having too many electrical components fooling my car to get performance out of it. I ask alot of questions to help me understand what I am doing instead of saying "what, more HP?...O.K. put it in dude!!"