Hi all
I'm looking in to performance upgrades for my 2006 4.2sc.
Already got k&n filter kit and custom exhaust .
Has anybody had good results from re-mapping or pulley upgrades etc.
If so who do you use and was it worth it.
Thanks in advance

Cheers
Len

10% pulley from PowerhouseUK on mine, need to machine the snout to fit but a notable increase in mid range power. For the money one of the best upgrades you can do. Combine that with a remap and you would have a good upgrade.

The route seems to be:

1. "Caldoofy" stainless steel air intake - larger diameter than stock apparently
2. 10% reduction pulley
3. High flow cats
4. Custom ECU remap to gain the most from the above mods

Apparently this gives 450hp (crank) but the acceleration is vastly improved - I can't find the link but I saw a post from a guy that claims (via a dragy GPS box) his 0-60 is now a shade over 5 seconds...feels optimistic to me but there we are....not sure if something was done to the gearbox to enable that too