7 posts
1990 Nissan 240sx (manual)
Lorton VA
7-17-2008
JDM Apexi N1 3in Catback Exhaust Question?
12:03 AM 7/25/2008
Found a good deal for it but it says Turbo and my current engine is a ka24e. I like the sound but i was wondering performance wise will it hurt me or help me? If either how much either way TQ and HP? Thanks.
2.5" for a SOCH. Believe me you will regret it if it's bigger. Single valve exhaust systems that are naturally aspirated hate 3". You also won't pass emissions with a 3".
2.5" for a SOCH. Believe me you will regret it if it's bigger. Single valve exhaust systems that are naturally aspirated hate 3". You also won't pass emissions with a 3".
depending the pipings and diameter it should be okay. oh yeah, that's true emission with 3" wont pass you. but over here in TX since 240 are old we don't have to care about emission.
^^^ I've seen some dyno graph that shows a kade that made more tq and hp throughout the entire power band with a 3" compared to a 2.5" just with some bolt-ons
So I Ended up going for the 2.5in piping and bought it and the F'ers from assembleweb or whatever sent me a 3in.... now they wont return my emails... Any suggestions...those Mother ****ers
So I Ended up going for the 2.5in piping and bought it and the F'ers from assembleweb or whatever sent me a 3in.... now they wont return my emails... Any suggestions...those Mother ****ers
that's not entirely true, i bought a 3in cat back and high flow cat on my sohc, and passed emmisions with flying colors. The only thing that i noticied was a bump up in hp and tq, but less gas mileage. But i leave the silencer in and the gas milage went back up as well and gaining a little more hp and tq. All the emmisions is looking for is if the cat converter is working properly.
