any ideas

[mono]

well ive just fitted a a decat pipe and a Viper Universal Cold Feed Kit
and my vtr is supping juice now is there owt else i have to fit or is that what i get for doing this stuff lol ........

[RustyM]

How much of a difference? You will see a difference with the induction kit as its intended to get more air into the engine and make more power, more power/air needs more fuel.

[jonnyb2b]

Do u hav all the sensors plugged bak in so there no warning light on, as before I refitted my pre cat sensor in the manifold on my vts it ran really rich, if not as already said the cold air induction will change how it runs now with more air and it in turn needin more fuel!

Jon

[RustyM]

If its just a couple of mpg then put it down to the changes made but anymore and id have a check round the sensors your touched and see they are all back in place like said above

[devilsadvocate]

If its just a couple of mpg then put it down to the changes made but anymore and id have a check round the sensors your touched and see they are all back in place like said above

Agree with this

MPG usually goes down with a decat but should only be slight so anymore means there is a problem

A faulty or loose sensor would be my guess

Did you have two lambda sensors or one?