Originally posted by roushcobra
I had a BBK offroad H pipe and 2 chamber Flowmasters installed yesterday. Maybe I need to get used to it, but it sounds really horrible between 1500 and 2000 rpm (hollow, droning, painful). I have the stock exhaust manifolds, new lead-ins, the new Flows and then the stock 2.25 inch dual tailpipes and tips.
Do I need to swith out the after muffler pipes?
I also bought the MIL eliminators, but the muffler shop didn't install them and my check engine light hasn't come on yet... do I need them anyway? I'm supercharged and I don't want to screw up the air/fuel mixture.