this is the header i ended up buying its a little different from the one on page 1

 

ANdyF- Those are the KMD headers, both times i tried to install a set from Ion Performance they did not fit. They would always hit the frame where the subframe bolted to, and based on how they looked i wasn't all that impressed with them. The would most likely fit a GC8 fine, they just were too wide for the GDA/GDB engine bay.

www.nasioc.com goto the vendor group buy classifieds if that's where steve got his from.

jeremy

 

here's the link to the group Buy, i'd hate to see one vender get eclusitivity of this product but it looks as if it's already happened. here's the link

http://forums.nasioc.com/forums/showthread.php?s=&threadid=290888

 

hindatch these headers are supposed to clear the subframe unlike headers before which didnt anyway mine is the old shape impreza

[Edited by stevebt - 12/22/2002 8:46:02 PM]

 

Interesting
http://www.wrxtuner.com/Performance/...comparison.jpg

 

Is it just me that thinks those graphs are doctured (sp?)

My thoughts are "what a crock of ****" if the torque graphs on left are supposed to match the bhp graphs on the right
(assuming blue is the before and red is after)

the torque lines don't cross the bhp lines anywhere near 5252 or whatever the sum is ??,


edit : wording to make more sence ?

Andy

[Edited by Fuzz - 12/23/2002 1:18:02 AM]

 

Good point ! Those American horses with 3 legs again

[Edited by Andy.F - 12/23/2002 1:17:02 AM]

 

i wish mark(happy) was around, he's much better at explaing the whole 5252 theory

and yes i wondered myself if the graphs on WRXtuners page were doctored...but they do perform well.

Jeremy

 

here's the link to the dyno plot of the car i put them on

here's the setup, lowest line is Pump gas map, second line is the C16 map, and 3rd line is the C16 + NX N-Tercooler

Enjoy

http://www.turboxs.com/images/dan_bj_pump__race__n2cooler_stg41_copy.jpg

 

Jeremy

Do you have a 'before' plot ? Did you lose the offbeat rumble or did the unequal length preserve it ?

Andy

 

hindatch forgot to say those arent kmd headers the ones on the 1st page are but the ones above are a different make dont know who by but they are more like the hks ones, but who care thier for nothing anyway!!

 

The torque figures are usually not SAE corrected, hence them being slightly lower (by a constant percentage by the looks of think).

The 5252 thing is function of power being equal to torque * rotational speed in radians per second, and that's in SI units. SO there is a conversion to give the number in RPM and imperial units, it happens to be 5252 rpm (is it even that, I forget these days).

Long live SI units....

Paul

 

andyF- the off beat rumble was still there but definitely didn'd sound lik ea misfire any longer. These really brought the sound of the boxer alive. After the tuning an everything the rumble has dwindled but the car is much stronger. It made 270ish WHP before the tuning, for whatever reason they didn't correlate the beginning map. just by going to the standlone timing/fuel control they gained 20 whp with the same map and just timing control.

stevebt-they look almost identical to the KMD unit with a smaller diameter up-pipe and an EGT bung in the side.

jeremy