Just the two cats on the 2.4How many cats are there in a 2.4 es lancer? Is it just 2, 1 in the headers and 1 above the crossmember? I've already gutted the cat in the exhaust manifold thanks
Do you need a tune after doing this?How many cats are there in a 2.4 es lancer? Is it just 2, 1 in the headers and 1 above the crossmember? I've already gutted the cat in the exhaust manifold thanks
Nah you don’t, the ecu has a certain amount of adjustability to it. On a stock ecu it’ll throw a check engine light for the rear o2 sensor but it’s not going to affect anything.Do you need a tune after doing this?