mean_greenZ

iTrader: (1)

i cant remember where i read this and i cant find it again. but it seems like i read that having longtubes, ory, and a borla catback with no plate was almost the same as having lt's, ory, and an open cutout. is that true? just wondering for my own personal knowledge.

CGrant

I have long tubes with ORY and catback, the plates come out so you can run wide open if you like but my car was so load i put the full plate back in, sounds bad@$$ now!

BizZzatch350

iTrader: (33)

If you take the tip off on the passenger side it gets a good bit louder. I ran no plate with hooker LTs and a ORY, car got tons of compliments from people. I have cats now, still no plate.

TXFORMULA

with an open borla the direction of the flow path would be straight out before entering the muffler.if its closed it sends it through the muffler. so if you ran a different muffler with a cutout before the muffler it would be the same setup. go for the sound that you want

MEAN LT1

iTrader: (2)

Coming from a person that used to have an open cutout, its a totally different sound. The Borla sounds way different than a open cutout, even at wot the sound is different. Im not sure about hp differences but I sure sa hell like my open plate Borla over my cutout.

Cutout:

View Video on FQuick

Open plate Borla:

View Video on FQuick

mean_greenZ

iTrader: (1)

thanks for the vids. they sound about the same as far as loudness. i can tell a slight difference in tone in the borla video. maybe its different in person. either way it sounds great!

Racin96ss

iTrader: (3)

There is a bigger difference than you think between the 2. It is pretty loud with open borla but it is even louder with an open cut-out.

NHRAMAN

iTrader: (1)

YUP--I have LT'S+ORY+QTEC[cutout]+7 year old Flowmaster...when I get on it ..it is REALLY LOUD.....

-PEPE-

iTrader: (10)

MeanLT1 and Racin96 are dead-on, they sound nothing alike and performance depends, if you mean by ORY (pre-axle) mounted (single cutout) ...ehhh it'd be very minimal performance wise on a dyno. If you were talking about dual cutouts mounted post-LTs then you could bump up the rwhp about 13 and torque around 11-12 with a bolt-on stock for the most part cammed LTXX. The sound with dual cutouts are ear-blistering...just ask BIZZATCH ...lol..he knows

Houdini

iTrader: (2)

My exhaust setup was as follows... 1-7/8" SS KooK's headers, 3" stainless Y-pipe with no cats and dual 3" electric cut-outs about 10"-12" from the collector, Borla with no plate. (I now run a Corsa cat-back)

Results on my H/C/I LT4

Cutouts closed on the dyno - 392 rwhp and 370 rwtq

Cutouts open (very next run) - 401 rwhp and 375 rwtq

I actually picked up close to 15 tq lower in the rpm range (2,800 - 3,800 rpms) with the cutouts open, which surprized the hell out of me. I never ran the car on the dyno with the Borla capped off, and if I did, I imagine I would have lost 5-10hp more than with it uncapped.

As far as sound goes... the open dual cutouts are just stupid loud, a little muddy down low in the rpm's, but once you get past 3,000... ohh baby!

jatsfirebird03

I have long tube hookers,and borla with no plate...sounds good but u cam hear the cam better with the cutouts and more HP. not much though.