hey guys im in the process of installing my longtubes on my truck and im sorta concerned about back pressure if i dont have enough am i losing hp??? if thats the case i will run some sort of mufflers (true duals). if it doesnt matter i will run glasspacks b/c i love that crisp rap sound. i will be running no cats and gotts 02 mod. any help or ideas?

thx

 

True duals, remember 2.25 piping to keep low end power. I would run mufflers for better sound, but I'm not sure if they will effect your set-up improvemtn wise. Someone will know

 

yikes. glasspacks? if u want a clean raspy sound put on dual SLP loudmouths.

 

If your worried about back pressure, have 2 high-flow cats instead of no cats at all.

 

the duals are already 2.5, and haven't noticed any bottom end power loss when i was running 2 stock cats.

thinking about running dynomax....sounds like there deep & throaty and could have a nice rap in higher rpms.

is the loudmouths a straight through design also???

 

The loudmouths are straight throw but they're pretty expensive.

 

I'd definitely put SLP LM1's on it

 

do you guys think ill be losing hp and torque and run like crap until i get a custom tune??

 

it shouldnt run 'good' with no cats and no tune thats for sure. you also need a cross over pipe like an X or H to keep low end power. dont over look this

 

Glasspacks are trashy sounding, Dynomax Bullets, or SLP Loudmouths would be a much better choice. Heres a truck with shorty headers, no cats, and LM mufflers.

http://www.youtube.com/watch?v=o_geM3_IUtQ ( start begins at 0:36 )

http://www.youtube.com/watch?v=pZ3Rx9VfI5U

 

If you use hi-flow cats, have a cross-over, and keep the pipe size down to 2.25, it will perform decently. When ever you get the custom tunes, it will run great.

 

Man I just watched those videos, I could never deal with all that rasp. I like the stock cats/ hi flows with maggies/Roush set-ups. That would drive me crazy.

 

ya that truck is loud, doesn't sound a whole lot different from a glasspack.

so the best bet for now is i should slap on a h or x pipe to help me out performance wise?

 

The x pipe will be for performance, it balances the set-up and helps with low end scavaging while the h pipe is more for sound. The difference you might be able to tell, maybe not. A lot of guys use the h pipe for trying to get the "famous mustang" sound. Persoanlly, if it were me, I'd get the x.

 

check out my vid for a dynomax bullet. i would recommend it if you want loud and deep as hell. turn the volume way up