KEV
I had my Sigma remapped via Cain Wolf.
The best thing I did!
You can accurately measure the increases in performance - but you can also "feel" them!
Frees the engine - lets it breath - much sharper acceleration and revs much easier right through the rev band.
I did have a Sports Exhaust and a KnN filter too ( before the remap).
Not expensive and I would say worth every penny!!
Talk to Cain or Williams.
