Acceleration Problems, please help

I just put a muffler on my car, a Magnaflow Street Series and I just changd my valve cover gasket. A few hours later my car starts sputtering when I crank it up like its choking and its fighting to stay cranked. When I accelerate, it wants to sputter like that between the 1300-2500 RMP ranges. Could anyone help me on this problem please!!!

~Dave

[email protected]

what model do you have? rs gs gst gsx, that would help alot...

The eclipse is a 95 GS. Could you please tell me what to do about it?

check your gasket, make sure it's sealed properly. Also have a look at your plugs and wires. Other than that, I can't think of anything without more info.

i second the plugs and plug wires.

The spark plugs and most of all the wires sounds like your best bet. When your wires are bad the car starts acting just how you described.