nomorews6

iTrader: (7)

I have SLP long tubes and an ORY - will there be any benefits to running a true dual exhaust setup over just placing cut outs on each side of the ORY pipe?

WILWAXU

iTrader: (6)

or a single cutout at the end of the I pipe

nomorews6

iTrader: (7)

would that be just as effective?

SouthFL.02.SS

I had SLP LT's as my first LT, along with the catted Y, then with TD's. One cutout on the I-pipe is all you need for performance. With low hanging SLP LT collectors, and TD's you'll be dragging/ bottoming out everywhere.

sparky t/a

iTrader: (1)

slp longtubes are a joke IMO, aside from carlos's car i've seen a t/a dragging his collectors going down a normal part of bird road in miami. it was a nice spark show...

SouthFL.02.SS

^
Whoa! Sparks. What's up?!

nomorews6

iTrader: (7)

Yikes! If I put a cutout at the I, will I have that problem as well? Also, what performance differences are there from a cut out at the I to true duals?

SouthFL.02.SS

Cutout in the I tucks up real well in the niche under the seat. No clearance issues. I ran (with SLP LT's) the single cutout in the I, TD's, (with QTP HVMC LT's which tuck up real nice) dual cutout ORY. The most convenient of all was the single cutout in the I for daily driving. The TD's were worth maybe 1-2 mph in the 1/4 mile if I recall. My best trap with the single cutout was 116mph. I switched to duals and trapped 118mph (both on the same cam-only setup at the time).

nomorews6

iTrader: (7)

1-2mph? Wow that is quite significant! Isn't that like a 10-20hp difference?

SouthFL.02.SS

More like kick *** exhaust scavenging at high rpms.

FUN LS1

If you already have a Loudmouth (original with just resonator, no muffler/baffles), how much of a performance gain is the cut-out?

SouthFL.02.SS

Zero.

FUN LS1

I was figuring it was kinda low, thanks, man.

I think this SLP LT set-up was a first-time learner for me, but it breathes well enough to wait until after heads/cam/intake swap before upgrading headers to something better & true duals. Or of course I could just knock 'em off on a speed bump, and upgrade right away

If I'm really lucky, I'll blow the LS1 up downshifting with the new 4.10's I installed today, and I'll have to swap in an LS7 or Warhawk LS7X...

SouthFL.02.SS

Same here. They do make power. Not a waste at all.