2.5 inch hfc into 3 inch exhaust?

ironfistmonke · 01-10-2020, 05:43 AM

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.

Quicksilvers · 01-10-2020, 06:25 AM

Quote:

Originally Posted by ironfistmonke

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.

ironfistmonke · 01-10-2020, 07:00 AM

thank you for the information, very helpful.

JARblue · 01-10-2020, 09:27 AM

Don't support AAM

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

gsg740 · 01-27-2023, 01:34 PM

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.

01-10-2020, 05:43 AM	#1 (permalink)
ironfistmonke Base Member Join Date: Apr 2016 Location: Minnesota Posts: 3 Drives: 08 g35x, 09 370z Rep Power: 9	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. Quicksilvers likes this.

01-10-2020, 07:00 AM	#3 (permalink)
ironfistmonke Base Member Join Date: Apr 2016 Location: Minnesota Posts: 3 Drives: 08 g35x, 09 370z Rep Power: 9	thank you for the information, very helpful. Quicksilvers likes this.

01-10-2020, 09:27 AM	#4 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,449 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Don't support AAM Do a little research and you will see why ... JLarson likes this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

01-27-2023, 01:34 PM	#5 (permalink)
gsg740 Base Member Join Date: Feb 2012 Location: Seattle, WA Posts: 79 Drives: 2011 nismo 370z Rep Power: 13	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. Corsairprime likes this.

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