[Warren87_28_4x4]

ok what would be the best for power gains
stock
2 1/4 straight with cats (DUALS)
3 inch straights with cats (DUALS)
3 inch with flowmaster 40s with cats (DUALS)
3 inch with flowmaster 40s without cats (DUALS)
2 1/4 with flow 40 with cats(DUALS)
2 1/4 with flow 40 without cats (DUALS)

also lookin for a loud powerful sound:uhoh:

thanks

 

[loweredd]

2 1/4 with flow 40 with cats(DUALS)

This is what I would go with. If you are running the computer, you will need the feedback to work correctly. what is the engine out of?

 

[02REDXBLAZE]

Not to mention passing inspection depending on where you are.....Anything over 2 1/4 with or without cats is a waste till you break about 400 HP

 

[loweredd]

man redxblaze, we agree about everything

not only is it a waste to do it, its a waste of torque. Sure its cool to say ive got 3" duals, but its gonna kill your torque. You might make 5-10 more horse above 6000 RPM, but I dont think youll ever see that anyway. :thumbup: Flowmasters ARE the way to go though. 40 series rule!!:headbang:

 

[02REDXBLAZE]

Definitely, only point I'd argue is the flowmasters..Yes they have a distictive sound but as far as numbers go the Ultraflow Dynomax's meet and or beat them in the numbers game..Just my 2 cents......