Thread: 4-1 Header for SR20ve - 200-220hp - Specs

Thanks guys. I was hoping I did not just waste hundreds on a header to make nothing more than the SSAC. Though I can not mess with timing, I played around with a/f for an hour only to find max power was at the same a/f as it was with the SSAC. I did think going with the 2" primarys was was gonna kill my bottom end, but to my suprise it simply just lifted my power band up from the get go. It did drop for a few hundred rpms when the exhaust cam kicked in, but nothing compared to the extra 8 thousand rpms. Even past 7800-7900 rpm, I have yet to count the dots but it looks like an easy 12+. Either way, I was sceptical at first, but now would recomend 2" piping. And if you run a 3" cat back rather than my 2.5, Im sure you would elipse my numbers in a quickness. Good luck to you guys, I wish you the best in making a header suited for you.

Good job, looking forward to the new numbers after the rechip.

Nice job, that header makes more power almost everywhere.....good work!

would u consider cam gears with the mix.....

I never have messed with cam gears before. What do you think I could change with them?

u could adjust the degree of the cams...... making a bit more power up top putting u more into the 200+ club.....

Good numbers

Please provide SAE corrected numbers, this will take out any question of weather between your two different header runs.

Nice numbers.

thesnail... was the pipe crushbent or mandreal?

Mandreal tig welded mild steel