Well on my 1990 accord i have a flex pipe, than the cat and then a resonator...

Im going to meineke and going to get a catback exaust, Will this add any performance? because its going to go from the stock 1" pipe to the new 2" pipe, with a dc sports muffler

i already have headers on my car, but the rest of the exaust is stock

 

it will add alittle performance to your car. probably not enough to notice. probably no more than 3whp.