Exhaust ???

[Big Bear]

I have a 4" MBRP full cat back right now... was looking at perhaps going turbo back and deleting the cat and muffler.. does anyonr know if this will make a HP difference?? and also if it will run different in the winter up here since it gets pretty dam cold

[blizzardwarrior7]

Do it! Yes, it will, cat backs dont do much at all....Deleting the cat, and the muffler will improve flow, and will make it sound 10x better. As for the winter thing? Nope, wont affect anything.

[Dave]

The biggest thing you will gain with the downpipe is cooler EGT's

[Big Bear]

Thanks guys... I was hoping if you spend the money though it would have some HP benefit?? I just don't know anyone around here that has done one.

[Dave]

might gain a couple HP but not much. Exhaust is more of a supporting mod for a programmer

[Big Bear]

so should I bother?? or leave it like it is??

[Dave]

I would do it

[Big Bear]

even if there's no more HP?? just for sound??

[Dave]

more so for the cooler EGT's than anything

[jblagg]

do 4 inch all the way out