Hey everyone,

I recently installed a Magnaflow 3" catback on my 08 F-150. However, I find it too quiet when idleing / cruising. It sounds awesome when I jam on the gas, but I'd like a more consistant sound.

My idea is to keep the 3" magnaflow pipe and switch the muffler for somthing like a Flowmaster 40 or a Dynomax Ultraflo.

Can anyone give me any pointers or advise on what I can expect. I hoping the final result will be somthing loud when cruising, idleing and accelerating.

thanks in advance.

 

Well first off How long has this system been on the truck? We have a break in period which is about 500 to 800 miles to allow the packing material to work itself in. The material is called Rockwool. After about 800 miles it will turn into this hard substance which will get a little louder. I would just wait if I were you and see how it sounds after a little time goes by. Whats the worst you would have to do. You just replace it farther down the road.

 

Yeah let it break in, give it 1,000 miles max and decide. If you swap, Flowmaster Super 44!