Good idea to straight pipe?
#21
Senior Member
iTrader: (1)
On my 97 4.6 I kinda went the cheap way and cut off the muffler then split it there and ran duals from there straight back it rumbles nice but not obnoxiously loud(but can be if you step on it lol) I think it's real nice sounding right at 2000 rpm i haven't noticed any down sides no cop problems either
#22
Senior Member
iTrader: (1)
Originally Posted by papa tiger
Add the stainless Y pipe and electric dumps with downturns, then you can open em up when you want to be nasty in the wild and close M up sum when you get to town or see a trouper with his ear out thewindow listening to you pull overthe crest of a hill. LOL
#23
Think you can find them on Amazon. You need to know size, and decide your metal. I like stainless for obvious reasons. Even have wireless systems working with wireless remotes. $200 or so for each side. If you don't have duals you just point the right side out a little from straight down. That way the drone/rumble goes outward instead of into the cab. It's for sounding bad arss instead of putt putt. If you got a good exhaust shop you can save a lot.
Last edited by papa tiger; 05-13-2012 at 11:55 PM.
#25
Unless you do the work to tune this motor to having no back pressure, it is guaranteed to lose low end powert, but probally gain a little upper high end power. My freinds newer model nissan titan lost about 50-60 horsepower when he put a straight pipe on it...
#26
Nor-Cal
Originally Posted by greenheadkiller98
Unless you do the work to tune this motor to having no back pressure, it is guaranteed to lose low end powert, but probally gain a little upper high end power. My freinds newer model nissan titan lost about 50-60 horsepower when he put a straight pipe on it...
The best size pipe goes as fallows
Si/so 3 inch pipe
Si/do dual 2.5inch
True dual bottom end 2.25inch
True dual top end 2.5inch
Last edited by 03FX4604; 05-14-2012 at 10:04 AM.
#29
Window splitting, jack hammering,sole bumping,flame throwing, pure noise is what it is. I was 19 and liked to open those drag pipes on the back country roads. It ran real good, and the 4 speed thumped em.
#30
Originally Posted by 03FX4604
No back pressure is a myth, it all has to do with exhaust flow which comes from what size diameter pipe you have and what kind of bends in it. Ifyou have a 2.5inch straight pipe or 2.5inch straight through muffler they both flow the exact same, anything other than a straight through style muffler hinders exhaust flow and therefore performance.
The best size pipe goes as fallows
Si/so 3 inch pipe
Si/do dual 2.5inch
True dual bottom end 2.25inch
True dual top end 2.5inch
Picture this a hose without your thumb on it flows out really slow, but a hose with your finger over it making pressure provides a much faster exit of the water.
So when you think of it, a large pipe diameter with a muffler should be a better flow than the same size pipe with no muffler; however, if all the pipe were downsized, it would be about the same as a large pipe with a muffler. So unless you get small pipe (probably just as costly, if not more, to re run all the pipe to a smaller size then to simply buy a peformance muffler.) the truck will deffinately lose low end power, get some crap gas milage, and possibly burn a valve or two in the process.
Save yourself the possibilty of a ticket
Save some gas from a more efficent engine
Save other peoples ears around you
Possibly save some vavles
Get a performance muffler
Rant over haha sorry if i pissed anybody off. Not trying to offend anyone...
Last edited by greenheadkiller98; 05-15-2012 at 12:32 AM.