simple HDI mods

[con67]

Cutting out the cat and replacing it with a straight piece of pipe works very well and has a number of advantages:
1) Middle finger up to cat thieves
2) Less restriction behind the turbo, means it runs cooler
3) Cooler turbo directly translates to more efficient engine (lower intake charge temperature)
4) And less thermal stress on turbo and other engine components = more reliable

Just for goodness sake, don't throw away that cat, especially if it is a genuine one

If you don't know where to take it, PM me with the numbers on it and I'll buy it off you Instant paypal payment if you'e too far away to meet in person.

Dear god are people steeling cats off cars now?