none so far

 

I loved the 4.57 on my AP1. I thought it was the perfect setup for any type of spirited/track driving. 4.77 is too high and you shift far too often. I'm not sure acceleration is MUCH better, although most claim it is slightly.


Again - my 4.57's were the best mod to my AP1 in terms of overall usability.

 

I wanna hear the spugen w/ magnaflow canisters...

 

I thought this was a really helpful thread. I'm sure there are a lot of new parts that have regrets behind them. So far my only regret is tires, Kumho AST. I should've done my research on tires before heading to discount tires and picking the cheapest set. Had the money should've spent them on better tires.

 

I had the skunk2 mega dual exhaust with invidia test pipe. To loud and so much drone, I think I'm slightly hard of hearing now. Went back to oem. I will eventually look for a much quieter but noticeable sound later on.