Hi all, forgive the simple questions but please point me in the direction of the answers.

I've bought myself a BPM Twister III backbox (for ***** + giggles ) for my my94 wrx and was wondering if fitting it is a simple case of fitting the new b/box in place of the old (currently has a Sti box), or do other engine adjustments need to be made too?
Also, i'm thinking of fitting decatted down and centre pipes soon - will this require any additional tweaking, and what's all this about a "lamda" sensor?

Thanks in advance and apologies again for my total lack of knowledge

 

hi mate, the backbox wont require any other tweaks, and should fit straight on, it just depends whether the bore diameter of the backbox is compatible for the centre section.

ian

 

Here's some fitting instructions:

http://www.users.totalise.co.uk/~sco...st/exhaust.htm

Cheers
Tim

 

Nice one, thanks - i was hoping that would be the case . Roll on Tuesday/Wednesday when I can fit the BPM (courtesy of Matt), can't wait.