bern11

iTrader: (13)

Hi,iv'e already got my 05sti fully decated and this weekend i'm changing the headers and uppipe,my question is what do i do with the lambda thats in the uppipe.i'm running an aftermarket ecu (Simtek) if that changes anything?
Sorry for the niave question??

Also the aftermarket uppipe doesn't have the hole!!

Many thanks

Midlife......

iTrader: (2)

The sti up-pipe should't have any sensors in it......the front lambda is in the manifold.

The WRX has aan EGT sensor in the up-pipe though

http://wrx.grapon.com/techdocs/wrx-i...st-diagram.gif

Shaun

bern11

iTrader: (13)

Thanks for that! but if the lambda is in the manifold and i'm changing to GT SPEC ones what do i do with it?

Thanks