Ok i have a 98 ex coupe and i currently have 4-2-1 headers with stock converter and muffler...but my question is if i get a hi flow converter and keep my stock muffler will it still pass emissions or will the converter allow to much???

 

Also will it set a engine light???

 

bump for an answer...

 

Does noone seriously not know the answer to this???

 

The muffler don't do nothing at all for emission...In fact where I take my car to get my emission test the tech told me that car will pass emission WITHOUT an exhaust..But you need one because they do a visual ispection..Stock exhaust is so restricted that it works like another Resonator to quite down the sound. California has some tough laws for emission it might even be the most strict in the country..

I own a 00 Si. They don't make a high-flow cat that is legal yet here in California..In fact I haven't seen one for mine yet. Unless you installed a Universal. But since we both have OBD2 it might give out a Cel for a high-flow cat. It's all in the cat if you will get a cel or not. If you go universal and is not meant for your car u might get a CEl

I think your cat is exactly where mine is located... Where my header drops towards the end just where the down pipe is (o2 sensor) it bolts right up to the cat..

Good luck

 

if you get a "high flow cat" off of ebay for $30, that is NOT emissions legal. We were just discussing Magnaflow cats on another thread; they make one specifically legal for Cali, but its OEM specs, so you wouldn't see any gains over the one you have now. Just get a catback exhaust (skip the muffler on stock piping), leave the cat OEM and call it a day.

 

well here is my goal...and yea my cat is located at the end of the down pipe...right now i have pacesetter headers and downpipe which leaks...so i need somewhere to get the gaskets for the pacesetters...while i got these off im going to go ahead and replace the cat too...my goal is not for sound because my car is an automatic and i think a auto car with exaust soulds like **** imo...so i just want something quite,hi flow or oem, with no engine light and being able to pass emissions...any imput???

 

bump anyone????