harley What is a pre cat? How do you remove it? How do I get to it? What do you replace it with? Is a deact on main cat recommended as well? The car is a 2.2 2002 plate astra
evocarlos 99.9% of pre 02 had them 02/03 are the unsure ones i believe most 04/05 had no pre cat only way to check is drop the down pipe and look
Paul_Wheeler Sorry to hi-jack your post but does taking the pre cat out effect the emissions on a m.o.t?
pottsey Paul Wheeler said: Sorry to hi-jack your post but does taking the pre cat out effect the emissions on a m.o.t? no it doesnt
vectra22 pottsey said: no it doesnt as Pottesy says.. ive done it my old Vectra and will be doing the same to mine now... gives a deep toner to the exhaust note and 1+2 bhp more.. well worth doing..