cat

[fredkruger]

will removeing the cat improve mpg.or make it worse.and will it increase bhp.cheers for all info.

 

[turbonutter69]

To be honest you'll not see much difference either way by just removing the cat. You'll get more noise which is always a good thing in my book.

 

[jarrus]

No noise change at all mate when I had mine done, diesels are actually quieter than there petrol counter parts with no exhaust (or lack of certain exhaust components)
I did loose the back box off my car on the motorway, at mid-high revs it sounded the same, at low revs it sounded gruffer, and I liked it,

removing the cat will improve both fuel economy and performance as you will have more mid range torque like I said in your other thread

 

[fredkruger]

cheers bud.i look forward to removeing it and the road test.

 

[jarrus]

do a stage 1 tune as well for best results

 

[turbonutter69]

removing the cat will improve both fuel economy and performance as you will have more mid range torque like I said in your other thread

Any real proof of gains?
I can't see just a cat doing that much TBH.

 

[jarrus]

I've never dyno'd my car so I can't say for sure if there is any torque gains on paper

But the turbo does spool faster and the midrange pull is better, fuel economy is better as I don't have to rev it as much in gear to get the same speed I want,

Mind you my engine isn't really standard as I have tweaked up the fuel pump and turbo,

The best way to decat these without a performance exhaust is to buy a standard centre exhaust section for a 1994 1.9td as these didn't have cats out of the factory and the pipe will fit straight on, no bodging required