Exhaust & MPG.

[EddieX]

Fitted a new Vx. exhaust from the Cats. back on Friday.The old one was rusted away in front of the rear box and the tail pipe had fallen off.
MPG went from 26.3 to 27.7  
Has anybody else had that happen? Or is it just a coincidence?

[Marks DTM Calib]

Its not unusual.....the Vaux parts are pretty free flowing plus old exhausts do get clogged up which will effect economy....

[tunnie]

mine went up too with a new GM zorst, really is silent with a propper rust free GM zorst.

I noticed quite a big differnce of a 2/3 mpg better. Guess you using less power as its not escaping early in the exhaust i guess, i found i was giving it less stick up hills but going faster than before!