Yes it was done at Alan Jeffrey got a receipt cost £350

 

Had a mate a mechanic look he said it's the pressure sensor that's not in got all the old exhaust and he could see it was that one
he could plug in didn't have the right gear

 

Impreza 2000 turbo. Does the removal of any cat involve a remap have asked numerous people who just go completely off topic and start talking about upgrading fuel pump etc. I'm aware of this I want an idiot answer please. Can I remove any cat without a remap . And I don't mean the sort of answer...... yh you can but you can't drive it etc etc

 

Yes it does. Removing cats needs a re-map. However they are a lot of cars that have had them removed and haven't had a head gasket or piston ring fail...yet.

 

Finally someone with a yes or no answer ..lol
Thank you

 

yes remap needed , but .. my fsti with a standarc cat v one with a sports cat , more power produced by sports cat one , one with a standard cat drives better and is just as fast so work that one out ?? same boost from both cars and same mods other than the cat difference

 

Thanks. Guess the sports cat v standard doesn't make that much performance difference alone then . I'm new to Scoobys apart from wanting one since I was 8 .

 

if you decat the downpipe it wont pass a standard mot , based on the cost of a cat plus a remap i don't think it's worth doing unless you are after every extra bhp , plus my fsti with standard cat drives better , slightly more turbo noise with the sports cat but that's the most noticeable thing

 

That doesn't sound right; a sports cat with map should gain approx 50 bhp over standard, and is a night and day difference

 

a sports cat v standard cat is a small increase , the comparison is the same map on both cars one with a standard cat one with a sports cat , very minimal difference and no noticeable speed difference , in simple terms you get a bit more power but it is not noticeable on the road

 

You can always decat the downpipe and leave the 2nd original factory fit cat in place (assuming it's still there). This will pass a standard MOT.

A remap is always necessary after any decat or sports cat replacement.

 

it's if it's worth doing due to cost of cat replacement pipe or sports cat if you do the down pipe , a good way forward is get a straight through mid section you get a bit more noise better breathing and no re map needed