craig178

iTrader: (2)

3.5 qtp e cutout should I get it? The ones who have them do u like them better than other exhaust setups u have had?

udienow

iTrader: (18)

I have no idea what exhaust you have, but chances are the 3.5" is too big. My cars got a 3" DMH cutout, and though I am not sure if it adds or robs HP, it sure gets louder with it open!

Rare96LT1Formula

iTrader: (32)

I've heard QTP makes great cutouts. But as stated above, make sure you invest in one that fits your exhaust!!

Sweet_SS

N/A vehicles need the back pressure, so it will hurt the cars performance if the exhaust is too big. However, too much back pressure will kill a FI vehicle.

lusting4ls1

iTrader: (15)

a cutout will definetely add some power. its been proven time and again on here. i agree though, chances are you need a 3" cutout.

craig178

iTrader: (2)

Ya that's what I was thinking too to get a 3" cutout, but I didn't know what a 3.5 would do. Thanks for the input. Also what brand do u all like runnin? What brands to stay away from?

udienow

iTrader: (18)

I read a lot of good things about DMH... plus they have a 4 year warranty.

silver2010

QTP 3'' on mine. Just remember that you need to close them with the switch on startup as sometimes they are open a bit.

craig178

iTrader: (2)

alright ill keep that in mind. thanks

z28_n_tx

iTrader: (7)

Def. Get dmh.. I ordered mine directly from them well thought I did ... I never got it nor was I charged for it... Even tho he did give me a transaction # at the time I placed the order... Go figure

ta-stanger

iTrader: (6)

DMH ! Great MOD!

Transam1

iTrader: (6)

need more info on what you have already done to your car or plan to do...that would help...and N/A ls1's do not "need" back pressure, these things are not hondas.

Quick Time

iTrader: (1)

You will need a single 3" for a F Body. If you have any questions feel free to give us a call.

Iwannagofast!

iTrader: (2)

Some cars need back pressure. But I have found from personal experience GM engines seem to do better with as little as possible.

craig178

iTrader: (2)

so would a 3 or 3.5 be better to get?

StuntmanMike

iTrader: (2)

Depends on the size of your exhaust. Since it needs to be welded into your existing exhaust, going with a 3.5" if you have a 3" exhaust isn't going to work very well.

If you have the stock exhaust, IIRC it's a 3" that you'll need. That's what I obught, although I haven't gotten around to installing it yet (so hopefully it fits!)

Sabin SS

Why does it have to be closed on startup? I just got my car about a month ago and it has an e cutout.

Transam1

iTrader: (6)

i dont close mine on startup, hell thats the best part sometimes, scared the crap out of people in parking garages! car alarms go off, dog bark, cats claw, birds fly into windows, all that cool stuff! ha

monte383sbc

iTrader: (15)

i got a 4'' cut out on my car and i love staring it up at meets when tons of people are standing around, they jump and really scare them lol