I'm getting ready to buy td exhaust and I found a decent deal on a HKS clone. The only difference is that the diameter is 2.5" instead of the normal 2.25". Will this create back flow and take power away or create other unforeseen problems? I have an o3 that is na, but I do have a cai. Any input would be appreciated!



P.S Unless you have an actual HKS system to sell me at the clone price I don't want to hear a bunch of crap. Only helpful info please.

 

it will be fine

 

Thanks! I guess that is all I needed...thread success!

 

there is a reason why hks has there TD exhaust at 2.25 compared to 3". your going to feel the rpm band shift really high.. I recommend you search hard before you buy the exhaust.

 

I do not know what back flow is. Sorry.