Hey all, just wondering, if i decat my 225 will it need mapping again or will it be fine without? Cheers...
The boost pressure from the turbo is regulated by the ecu, so a decat won't upset the boost pressure. However removing the cat decreases restriction in the exhaust and you might need to adjust the fuelling. I think a rule of thumb is that reducing a restriction in the exhaust makes an engine run leaner, and reducing a restriction in the intake makes an engine run richer.
Mine ran fine for over a year with a decat and fuelling was pretty spot on with it, It did have a map that was pretty rich on it tbf though before i got it mapped again properly
Cheers for your replies fellas, really then the best thing to do is have it mapped afterwards, i have heard of people running without a map and it being fine but i'd rather things be right. Again, thanks for your input lads...
