I just bought a 2002 954 with stock exhaust and would like to replace it with a slip-on. If I do this do I need to match it with a power commander or does that depend on what exhaust I purchase? Thanks

 

you dont really have to add a power commander, cause the truth is.. a power commander alone is useless, so when/if you get one, get it custom tuned right away

 

Its kinda new to me yet, but i have a Jardine can and a K&N filter and seems to still run great without a powercommander. It runs a bit rich when its cold out but have no fouled plugs or problems, no stalling or burping down low etc.... I am hoping i dont need one down the road but so far so good for me.

 

k&n without a pc3 = hp loss

k&n with pc3 + custom map= hp gain

exhaust slip on without pc3= possible loss/gain/no effect

exhaust slip on with pc3 + custom map= hp gain

 

So they are that picky eh? When you say hp loss for example with the K&N and no map i assume its very nominal though?

 

maybe 2-3 hp loss over the band

 

when you get it tuned it gives you a HP gain and smooths your powerband out so you have a constent accleration till redline, it's worth the money

 

Guess ill have to get one of those too then, thanks for the tip.

 

So do you need one, or is it possible to tune the stock computer?

 

you need it... this is how you tune the stock computer