Just had Prodrive sports cat,decat pipe and back box fitted to my Sti my03 and when accelerating hard I get a holding back point around 4500 revs. Is it because the current fule pump is stretched? thanks. I am waiting for delivery of the uprated Walbro pump before a Bob Rawle remap.

 

I was advised to have one by TSL for safety reasons on my 02 wrx, also fitted a de-cat up pipe,sports down pipe, de-cat centre section prior to remap by Bob. (Great bloke)

 

Std pump should be ok with just an exhaust, but you'll need the uprated one for the remap.

 

i have got a walbro one that i'm not going to use now due to a change of plan (two external pumps instead) if your interested dop me a mail info@cswood.co.uk

i think it was £120. but dont quote me on that thanks Chris.

 

Technically at the moment, no. But for safety's sake if you're planning a remap soon, yes.