Nissan 370Z Forum - 2.5 inch hfc into 3 inch exhaust?

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2.5 inch hfc into 3 inch exhaust?

I was thinking of getting the AAM COMPETITION R-LINE 3" Exhaust but was wondering how it would bolt it onto a 2.5 inch hfc, or if i would need a 3 inch hfc, Thanks.

Quote:

Originally Posted by ironfistmonke (Post 3899878)

I was thinking of getting the AAM COMPETITION R-LINE 3" Exhaust but was wondering how it would bolt it onto a 2.5 inch hfc, or if i would need a 3 inch hfc, Thanks.

Excellect choice the AAM Competition R-Line 3” exhaust is a very nice quality exhaust with spot on fitment to match and there is power to be gained here. This exhaust bolts right up to the stock Nissan OEM 2.25” cats but if you are spending the coin for this exhaust you don’t want to create a bottleneck and leave power on the table so if you don’t have a 2.5” test pipes or 2.5” HFC’s it would be recommended to get the AAM Competition 2.5” test pipes or AAM Competition 2.5” HFC’s to match up with this exhaust.

thank you for the information, very helpful.

Don't support AAM :wtf2:

Do a little research and you will see why ...

I have been running/tracking the AAM dual 3" catback for 3 years now. Best flow you can find on the market. This is especially good if you want to upgrade to supercharge later on.
The exhaust has very good build quality, no fitment issue. However, it does have drone around 2000~2500 rpm but not a problem if it's a track car.