i put a 3 inch custom exhaust with a magnaflo muffler and now my check engine light is on and a lot of white smoke is coming out of the exhaust. can any one give me any helpon how i can get rid of all this smoke

has any one heard any thing on the speed intake? is it wroth it?

White smoke usually indicates thatwater (coolant)is entering the combustionchamber and comes out as steam/vapor through the exhaustafter the burn.
I don't see how a new exhaust system could cause that though....?

I think you have a problem unrelated to your new exhaust. I agree with virgin1...coolant in engine. Change out your engine oil and see how it looks...if it's milky, you've got coolant in your oil.

white smoke - water/coolant
black smoke - fuel (running rich)
blue smoke - oil

Possible blown head gasket.