exhaust question

[albritton]

Alright fellas..I have a question..I have a 04 6.0 that is strait piped (not the famous 03 scream tho, i wish) with cat-delete and I just have the factory 3.5" pipe....If I get a 4" system with or without a muffler what difference will I be able to notice?? sound quality and performance wise? What do yall think?? Is it really worth the money??

[bigwhite7.3stroker]

Lower EGT's, deeper tone, and a little more power it should be a noticeable diff and if your planing on running any High HP tunes it would be a good idea the 4 inch will lower exhaust temps 200 degree's or more.

[Raul@Stealth Automotive]

I agree.....

[HarleyDavidsonF250]

whats would be louder on my 04 6.0 a turboback 4" straight pipe or turbo 5" pipe with free flow muffler no cat

[BigRed]

Why not 5" straight piped?

[HarleyDavidsonF250]

you tell me haha i want it to be as loud as possible and whistle like theres no tomorrow is a 5" straight pipe any louder then a 4" straight pipe cuz if not i wont pay the extra money

[Triflex]

I`m told a 5" with a 6" tip is awesome.

[bigwhite7.3stroker]

Originally Posted by HarleyDavidsonF250

you tell me haha i want it to be as loud as possible and whistle like theres no tomorrow is a 5" straight pipe any louder then a 4" straight pipe cuz if not i wont pay the extra money

I don't know that it will be that much louder but the 5 inch is definately deeper sounding

[albritton]

Im with you harley davidson!!! I wanna hear that turbo scream like when I gradually take off..It sounds awesome!!!!! Thats exactly what im lookin for!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!

[bigwhite6oh]

rumor has it, the 5" has a deeper tone to it. i just put silverline duals on (love em by the way) 3.5" DP to 4", no cat w/ muffler. actually has less drone than stock, as quiet as stock on the highway cruising, but screams like a mofo and sounds like a big block heavy on the throttle!! oh yeah, and even got to test the straight pipe theory, when i brought it to a shop with only the downpipe and next section on. loud and made the floor rumble a little