my sti uppipe is blowing do i need to replace like for like i have a 2003 wrx remapped to 338bhp or can i put one of harveys on without having to get a map tweek cheers

 

I replaced the uppipe on my last sti without any problems just make sure the lambda sensor hole is in the same place as my mate bought a cheap one of eBay and it wasn't ok for a few days then after booting it engine management light came on

 

sti uppipe doesnt have a lambda sensor on it m8

 

if harvey has a standard bore one then yes you would probably be ok, but if you go for a Harvey special up-pipe you would need a map tweak

 

Best to drop harvey a PM and ask his advice.

 

Sorry my mistake he bought equal length headers and up-pipe and the sensor hole was in the up-pipe instead of the headers