Off road H vs long tubes

[Bad06stang]

So long story short I am buying a set of Kooks 1-7/8s long tubes with catted x pipe from my buddy brand new in the box for a great deal. Just curious of the differences in power of the long tubes with high flow cats and x pipe vs stock manifolds with a lethal 3" off road H. Not going to go down because Im putting cats back on will I?

 

[stang8psi]

probably not much of a gain.. the cats will restrict some.

 

[zeroescape]

Most of the gains are through removing the cats. OEM shortys with off-road x produce similar gains as longtube w/ off-road x. Im not sure of your goals or NV laws but it is possible to just change the cat portion of kooks setup. I think its like ~$200 bucks to get the catless half of the x pipe.

 

[Bad06stang]

cool thanks guys! I will probably get the cat less part of the x too, and keep the cats for smog purposes. I plan to supercharge the car one day so these will help when the time comes.