Jackaroo Exhaust Restrictors

Blackjack, have a look in the Archives for info on this. There should be heaps there. About 6 months ago I think there was about 300 hits on the subject. I have had mine removed and I get more power but not much more fuel economy. Those figures you quote are about right. I get 500k highway and about the same as you around town. Nature of the beast I'm afraid.

Blackjack look here
link text

i'm the originator of a few of these threads you will find in searching, the restrictors are there for nvh issues, so be prepared for a bit more noise.

Induction has more gains to be had than exhaust restrictors, again search here and on the link provided.

on standard tyres mine gave 13-14/100k bush, 12 on road, with 265/75 it gives 15 bush and 14-15 road. so mine is getting better than yours with the big tyres, and i dont take it easy :-).

But if you are running an auto then yes they really suck the juice.

Jackablue - your link answered my question well.
It will be my next project.

Thanks for the info guys.