Ive read that the jba's had smaller primaries than the frrp, and bbk shorites is this true? Like 1 and 1/2 primaries compared to frrp and bbk having 1 and 5/8?
JBAs for SOHC 4.6 are 1 and 1/2 inch primaries. The DOHC models are 1 and 5/8. The FRPPs are 1 and 5/8, but I don't know what the BBKs are - they haven't been released yet.
Brothers sells the bbk shorties they have been releasd I have one of their magazines. They have 1 and 5/8 primaries as well and they look somewhat like a equal length header.
My JBA headers and BBK H-pipe were worth 30 RWHP for me, so I would definitely say they are worth it. Also, the sound is awesome with my Magnaflow catback...
my other mods besides the JBA ceramic coated cat4ward headers are:
k&n fipk 2
steeda underdrive pullies
magnaflow x pipe
custom made catback
Sam98 said:
My JBA headers and BBK H-pipe were worth 30 RWHP for me, so I would definitely say they are worth it. Also, the sound is awesome with my Magnaflow catback...
I got a lot of heat for my dyno, but what you said, and the 2 other dyno sheets are true, but anyway, my point is...is that JBA headers do give significant gains. However, I would have gotten LT's if it weren't for california's smog laws. I also wouldn't have done it if i could go back...its kinda expensive...but im not complaining about them