| Author | Message | ||
     Dallasb |
I have an 06 xb9. I've heard that you can put an xb12 header on the 9's in order to squeeze out a little more power. Will an 04 xb12 header fit my 06 xb9? | ||
| Duff24 |
Yes. | ||
| Nillaice |
yep. me and a friend put a 9S header on his 12R. no dyno runs, but with the his D&D its got longer legs. other than that it FEELS faster in the lower RPM range. | ||
| Bishopjb1124 |
Yes but you may loose power due to decreased back pressure. | ||
| Delta_one |
so a 9 header on a 12 helps a 12 but a 12 header on a 9 can hurt performance? isn't it the same thing with the pistons too? | ||
| California69gs |
Wait, now I'm curious? I could get more performance putting a xb9 pipe on my xb12scg? Cuz my header is currently dinged, so I was looking for a 12 replacement. | ||
| Nillaice |
what ever you do, you should map it correctly to get the maximum gain/minimal loss. we did nothing of the sort. the increased back pressure from a smaller diameter header could be negated by the free-flowing D&D, but i'm no rocket surgeon. i don't know enough about fuel maps to get into a debate about it, so i'll leave that to the internet experts. if in doubt, just run it stock. |
