Sk8runeg

iTrader: (11)

I was wondering if it would hurt the performance of my car if I removed the muffler and ran with straight pipes until I buy full exhaust. I started my last LS1 with no muffler, it was with the stock manis/y-pipe and it sounded awesome, and wasnt too loud. So will it be OK or will i lose too much backpressure?

Thanks
-Scott

BLK02TA

iTrader: (11)

You'll be fine. Take it off!

bitterchaos

iTrader: (6)

It would be just fine. IMO the stock cats muffle almost as well if not better than mufflers. You'll lose a little bit of low end but you probably wont notice it.

orangeapeel

iTrader: (18)

F it. Pull it off.

DuronClocker

iTrader: (25)

I highly doubt you'll lose any low end at all. Its no different than an aftermarket cat-back. Figure a mufferless 2.75" pipe probably flows as good as a high-flow 3" muffled system.

LSGunZ28

iTrader: (8)

losing backpressure is a good thing, what you are talking about is scavenging, and I dont think you will lose too much. However, when I ran my car straight Y pipe, it wanted to shut off a few times on the freeway.

orangeapeel

iTrader: (18)

DAMNIT! Your not gonna lose backpressure! Loose that back pressure talk! It is all about the scavenging!

staringback05

iTrader: (8)

i might have to disagree, about this talk......i was talking to a fellow ls1'r the other day......and we talked about this backpressure debate....he had trual duals....NO xpipe or bullets...just straight piping.....he said he was getting worked at the track on the low end.....he switched his exhaust setup to a xpipe and dynomax bullets....which in turn would add more back pressure.....and his 60' times picked up....nothing else was done to the car.....

orangeapeel

iTrader: (18)

Actually it would help with scavenging.

staringback05

iTrader: (8)

didnt say it wouldnt.....but it would help with both as far as i see it.....you need to go to bed

Urban Legend

iTrader: (5)

This is what running the Borla with the open plate is. So do it.

LS69TA

iTrader: (30)

I've done it twice so far. It doesn't sound too bad and it won't cost you much.

orangeapeel

iTrader: (18)

There is no need for back pressure on the LS1. I need to go to bed!

FU_I_AM_UltraZ

iTrader: (20)

with the stock headers and cats... that should be fine.

LS69TA

iTrader: (30)

They don't come stock with headers

orangeapeel

iTrader: (18)

Seems we have a newb on our hands.

LS69TA

iTrader: (30)

Yea, but if it weren't for us they might never learn.

orangeapeel

iTrader: (18)

Wow, thats the damn truth.

LS69TA

iTrader: (30)

I guess that's what we get paid for.....wait a minute, we give all this info. out for free?

Urban Legend

iTrader: (5)

Ooops.