FINALLY TIME FOR SOME GOOD POWER UPGRADES!
After talking with my good friend and Subi "know it all" Jeff Perrin I have decided to make room in the budget for the PERRIN Equal length header we make. He swears it'll spool the turbo sooner and have decent gains even on the stock turbo, and it'll even be more of a benefit for the UPGRADED snail we have planned. ;)

The header is NOT a simple bolt on for the WRX as it needs a few OEM Subi parts to go with it (the header is designed for the STI). I needed to get the STI Oil Pan, Oil Pick-up tube and decided to get NEW OEM gaskets for the head flanges and up-pipe flange.
http://www.perrinperformance.com/galleries/image/107/600.jpg?1205171750
To accommodate for the different pan shape the oil pick-up is moved, notice the different shape of the support bracket. (sorry for the blurry picture) The old WRX Oil Pick-up is the darker and dirty looking one.
http://www.perrinperformance.com/galleries/image/108/600.jpg
Here is another angle of the Oil Pick-up tubes. The WRX one has a large open mesh pick-up area, the STI has a smaller opening before the mesh (more vacuum?) Again sorry for the blurry picture :)
http://www.perrinperformance.com/galleries/image/109/600.jpg
Here is a picture of the oil pans. The WRX is the dirty one, I am holding them so they are clocked the same, notice the differences?
http://www.perrinperformance.com/galleries/image/112/600.jpg
Picture from under the car with the oil pan and oil pick-up removed. To install new pan, make sure you clean the mating surface.
http://www.perrinperformance.com/galleries/image/111/600.jpg?1205365730
Picture from under the car again with the STI Oil Pick-up tube installed.
http://www.perrinperformance.com/galleries/image/113/600.jpg
Header installation almost done.
http://www.perrinperformance.com/galleries/image/110/600.jpg?1205365726

Sound clips are coming but opposite of popular belief you can still tell its a Subi Boxer Engine, its just a little mellower.

http://www.perrinperformance.com/shared/images/dynos/2002_wrx_stage1_surgeline/stage2headertest.jpg
Yes, a little loss down low but good gains up top. Stock turbo, Stock down pipe.

Click here for results with bigger turbo and 3" down pipe.
(http://forums.nasioc.com/forums/showthread.php?t=1548779)

WOOOHOOOOOO!!!!

Finally some power!!!

Or maybe not so much power? How bout some numbers guys??

^tool.

Looks good my next mod is a Mad Dads exhaust manifold.

^tool.

Please elaborate?

Or maybe not so much power? How bout some numbers guys??

numbers are coming, customers come first on the dyno :( so I have to wait for free time.

sweet, i"ve always loved the EL headers, i've never heard a Perrin set, im excited :)

Did you change the dipstick too? The wrx dipstick and the Sti dipstick are different lengths.

Rich

Did you change the dipstick too? The wrx dipstick and the Sti dipstick are different lengths.

Rich

I would like to know this as well.

Is changing the oilpan a difficult process? I can only assume you drain the oil, then just take off couple of bolts for the pan?

Also, on the Perrin Header, do you have to change the O2 sensor? or is that on the uppipe only? Does the Perrin header match up to aftermarket uppipes?

post up dynos! keep up the great work

BUMP for dyno results (ive been waiting a month now paitently)


I would like to know this as well.

Is changing the oilpan a difficult process? I can only assume you drain the oil, then just take off couple of bolts for the pan?

Also, on the Perrin Header, do you have to change the O2 sensor? or is that on the uppipe only? Does the Perrin header match up to aftermarket uppipes?

post up dynos! keep up the great work

IMO, its allot easyier to get at the back 6 bolts on the pan if you unbolt the lower engine mounts and jack up the engine. then use two screwdriver handles as extra spacers under the motor mounts to hold it in position while you work.

yes it bolts up to other up-pipes, you can even use it with some rotated turbo kits

good job! i was thinking about getting some headers and i may have the brand i want now

looks sweet!

ive always wanted a set ^^^

Added dyno chart to the original post.