Had the air flow sensor replaced on my STi V on thursday (thanks to David - helped me out big time!) - car is now definitely slower than it was before. I know the ecu needs to learn, but I've now got a slow car and the Scoob v Cossie thing coming up! Whats the quickest way to get it back to normal. I've tried to load it heavily when poss and using octane booster, but I don't want my *** whupped on the day by some crappy cossie! Any suggestions?

 

Just one thought Craig, I had problems with my MAF as well - I tried swapping it for others to see if it made a difference - sadly they all made my car run much worse than the one I started with.

So, all MAFs are equal, some are more equal than others!

R

 

Mine was dead, so it is an improvement!