getting rid of these shortys in the near future and getting some pacesetter long tubes. i can't decide if i want to go with 3" duals with an X-pipe or go into a single 4". i'm pretty sure i'm gonna use borla xr-1 mufflers either way. some of you FI guys, give me some suggestions.

 

well, it is all about flow area/flow rate.

4" pipe has a flow area of 12.56 in^2

Dual 3" pipe has a combined flow area of 14.14 in^2

That said, dual 3"

 

Unless all you need is 10"^2, then both would be overkill....

 

Supercharger + LTs = need for dual 3"

 

2 x 3" is my vote also


either way
mind posting some clips when you get done?

 

dual 3" has more frictional surface area than a single 4". Single 4" is lighter also(assuming same guage pipe).

I'd like to see some real world test one day about the dual 3" or single 4" arguement though. Anyone have a link to something on that subject?

Found a nice little chart for pipe sizes on Torque Tech's website.

 

So I guess I really screwed up getting 1 si/so 2.5 magnaflow. Should've went 3"

 

No, you should be fine, most of these other guys are blown.

 

Thanx. Dub I must say you have some great customer service. Thanks for all the help

 

I run dual 3" pipes y-piped into a 4" Magnaflow diesel muffler with a mandrel bent 4" diesel pipe to a 5" tip...best money I ever spent and it sounds like no other truck I have ever heard...very low pitch sound...loves setting off car alarms...go to the moves and I can get 5 or 6 going at one time

http://james.jaguar.net/kctrading/383-5psi-1-2-run.avi



As mentioned above...lighter weight than duals and a single system keeps the exhaust temps a bit higher which helps on the flow as well.

Ken