As I said.... The ones I'm looking at most probably don't do anything. OMG, I should put a GT wing on my car so I can increase downforce
Did you know if you install an R33 GTR copy front bar you increase front traction by 60%? (I'm being sarcastic btw)
Basically what I was saying in that post of mine that you quoted is, if you don't have proof to back up the things you're saying, then I'm going to keep on believing that these rear diffusers that I'm looking at do jack shit.
And hey, khunjeng, I never said Geoff's diffuser didn't do anything, I just assumed that because he thought he'd drop his "qualifications" in his post that he would've done some measurable testing. What I said was the diffusers I'm looking at don't do anything. So go take your sarcasm somewhere else.
This is, afterall, the "cosmetic and styling mods" section.