awf4i

Has anyone done or thought about doing exhaust cutouts? The reason I ask is my 06 Imp. was purchased as a future family wagon and there's no way my wife would go for a louder exhaust. So far I have a k&n intake, flipped motor mount, and res delete. My future mods are strut tower braces, eibach springs, hogan down pipe with cat, rockers, springs, possibly headers and either a vector or diablo tune. I figure with the electronic cutouts (3" cutout after the cat) I can keep it quite for the wife and kids and open it up when I'm alone or at the track. Thanks for any input!

Nacho SS

iTrader: (4)

I used to have one until I got my 3" system. They are cool because you can have roar when you want to, or quiet for highway driving or something. I think they are a great buy if you don't have a wicked after market system.

awf4i

Thanks Nacho. A couple ?'s for you, where at on the exhaust did you mount yours, what diameter, and did you lose any bottom end?

Corny40

iTrader: (7)

Sint3k has a cutout. There's a thread about it, somewhere here in the LS4 forum.

Nacho SS

iTrader: (4)

Sorry...I'm doing this from memory because I haven't had a cutout for a while.

http://shop.quicktimeperformance.com...ct_detail&p=24

IIRC, I used that one ^ (fits stock piping), about an inch away from the cat outlet. I tig'ed a flared tip off the open end of the cutout to create some turbulence and flow out of the cutout. As for the bottom end, I really can't put my finger on a performance decrease, i.e. its virtually unnoticeable.

It adds a nice roar to the engine, and you definitely notice more lope....That translates directly into a mental performance aspect--you will like the sound when you mash the skinny pedal .

ChefChub

iTrader: (1)

i have the cut outs on my monte and love it. i have mine right before the mufflers.
here is a sound clip for ya.
http://s5.photobucket.com/albums/y17...urrent=003.flv

awf4i

Thanks for all the help so far, I will being doing this very soon. But one last question before I do, is there any difference between using 1 cutout after the cat or using 2 right before the mufflers like chef did (other than price)? I would use a single 3" behind the hogan setup or 2-2 1/4 before the mufflers. Thanks again for all the info.

Nacho SS

iTrader: (4)

Nice clips....like the sound.

May have to get another cutout....I could scare small children .

DavidGXP

iTrader: (14)

Dude that was bad ***!

Compg

As far as performance goes, then putting the cutout as far up to the engine as possible would weld better performance gains by bypassing the cat back system.
Tate

ChefChub

iTrader: (1)

thanks guys. ya i only have 1 cut out. it is the 2.5 inch one. i will get ya more pics if needed.

Dustpunk

is there realy a power increase with the cut outs?

ChefChub

iTrader: (1)

umm idk i couldn't tell i ran .1 seconds faster at the track with them open. but also i was in some hot, nasty weather so ya. not much just makes heads turn.

Nacho SS

iTrader: (4)

I would say > 10 HP, but there is a SOTP feeling as well as a sound increase that may make it feel faster...

Dustpunk

Cool, so cutouts are not really a good alternative to a good cat back system then.

Jdharmzy

i'm new to the car tuning scene but I just got an 07 monte ss. Does adding a Diablo sport tuner void the warranty? Is there anything i can add that wont void my warranties? Thanks in advance!!!

Nacho SS

iTrader: (4)

Welcome....as you are new, I'll help you out.

1. When you have a new question that does not pertain the main topic of the thread, make a new one.

2. I'm pretty sure there's isn't a Diablo programmer for the 07 models yet.

Corny40

iTrader: (7)

Yes, you will technically "void" your warranty. Any tampering with the ECM/TCM will "void" your warranty, no matter what product you use. The key is, if you don't admit to it, they'll never know. AFAIK, there is no way for them to tell that ECM/TCM setting have been altered, as long as you return everything to stock before you ever have to take the car in for warranty work.

Nacho is right, there is no Diablo for the 07s yet, but HPTuners supports 07s.

Nacho SS

iTrader: (4)

Thanks Corny....

LeadFootGXP

I have heard that these cutouts leak i have never actualy seen one in action what have you guys experianced? Its hard to hear in the video over your normal exhaust. Im toying with the idea of putting a cutout on my stock system and a little tick of an exhaust leak would drive me NUTS!!