de cat

[abu]

i have fitted a de cat pipe on my w reg vtr 90-bhp but the car seems slugish and dosnt shift like it before the air filter is a knN type but is situated at the front of the car and god its LOUD

[Richardson_VTS]

you didn't tamper with the lambda sensor when you took the ca off did ya mate? i had to replace mine when i put a manifold and de-cat pipe on my vts.