I am looking to put a new high flow cat on my 04 ecotec. I see alot of people like the magnaflow cats. Does anyone know how the dynomax super converters are? I was looking at model #15037 which is a 2 1/4 size. Will these work with the ecotec engines? Also are there any other good high flow cats besides magnaflow out there? I also here about check engine lights going on. Should I be worried about my check engine light going on if I put on a high flow cat?

Thanks.

Honestly I'm not sure about the dynomax. I would just play it safe and get the magnaflow. I have never had a CEL issue with mine.