I had a tuning session at King Motorsports yesterday. Only modification change was the J's header. I went from 364 up to 379, with a gain of apprx 15whp, and from 224 to 231, which is approx 7 torque. I'd say they gains are worth the cost of the header. Next is Sideways's cam timing keys, hopefully Ill have those installed within the month.



My data log in text form:

Time/s Air Temp Engine Load Engine Speed Ign Timing O2 #1 Throttle
14.480 96.80000 11.35396 8214.84375 19.21094 12.12375 99.99847
14.700 98.60000 11.56721 8402.34375 18.85938 11.95219 99.99847
15.140 100.40000 12.57199 8605.46875 18.85938 11.95219 99.99847
15.380 102.20000 12.70369 8804.68750 18.15625 12.00938 99.99847
15.400 104.00000 13.11232 9000.00000 18.15625 11.78063 99.99847

 

so you're just running the j's header, stock cat, stock exhaust?
good numbers btw

 

Sweet results! Now you have to try the Hytech header! hahaha!

 

No, I am running a JUNK2 70mm Test Pipe, and a J's 70RS Ti Single

 

Ill leave the Hytech stuff for you. Ill just keep running crummy J's parts

 

sick.. i'm wondering if the berk header is similar in design to the j's

 

I dont think it is, the J's is pretty much the only mass produced header that is proven to gain power when tuned properly.

 

i got a 1220 n its pretty nice to see the gains in the smallest pulley applied. you never thought about upgrading the blower to the 1200?

 

^ Toda

 

I have thought of it, alot. Problem is the cost. 400 for the upgrade, new pulley and belt will be 110-120, plus tuning 300ish. I am kind of waiting or 928 to figure things out with their impeller upgrade before I jump the gun on the 1200 impeller.