Xforce

[kdoohan]

alright i think its time for a exhaust been having a loook at the xforce twin 2.5" catback system with hotdogs quoted $480 what do you guys think about it? any suggestions hear the 3" you loose power so im looking for something loud with a deep tone.

BTW: VZ holden Executive.

cheers
kjdoohan

[OFF T4P]

have you got extractors ?

[Surfwagon]

For what engine are you talking about.
Twin 2 1/2" is fine for an LS engine up to around 320rwkw after that the twin 3" will give you more top end power and a higher rev limit but you will loose bottom end torque.
If it is for a 6 then don't go over twin 2 1/4 if you want low down torque and high end power.