[bighunterjpk]

my buddy took his exaust off about 4 inches in front of his rear axle. he said it helps m.p.g. and performance because less backpressure, plus it helps hear the turbo better. my question is could that do damage to anything? could it rust the underside of the truck cause the exaust fumes?

 

[Slated4Greatness]

I doubt it help with MPG but it will add fumes under the bed and cause the underside to be coated with soot. JMHO.

 

[CSIPSD]

Soot... I have a cut out I can open from the cab, its installed by the tranny X member. It covers the underside of the truck! No HP gain on the dyno, no EGT change on the road, just sound!

 

[gregrob]

:supergay:

 

[CSIPSD]

:supergay:

YOUR GAY...

 

[Timbeaux38]

We installed an electronically operated cut out at on Matt Stuckey's old CR a few years ago at Garmons. It was in front of the Muffler, and picked up 5 hp on the dyno, covered the undercarriage and tailgate in soot though.

 

[CSIPSD]

Thats what mine does... the whole underside...LOL I'll get a quick video tonight...

 

[LarryM]

my buddy took his exaust off about 4 inches in front of his rear axle. he said it helps m.p.g. and performance because less backpressure, plus it helps hear the turbo better. my question is could that do damage to anything? could it rust the underside of the truck cause the exaust fumes?

I might be completely wrong on this, but it thought soot when subjected to moisture over time becomes caustic/acidic and not good. This is why IIRC cracked flue linings in brick chimneys can destroy the brick work over time. You might do some "googling" on soot and moisture and see what you find.

Just something to consider/tink about oke:

I would have loved to do something like that with my Van to solve my "drone" problem but all I could come up with was the following which wasn't exactly what I wanted. :lame::redspotdance::redspotdance::lame: Before you ask that was actually installed on a function exhaust system and tested at idle, but not on the highway. However, if you saw that or even "TWINS" driving down the highway you would do a double take ... LOL

Larry

 

[CSIPSD]

Here is the cut out video...

http://videos.powerstrokenation.com/video/d3561130-3293-4dee-94fc-9998017751a3.htm

 

[NWSUPRD]

cannot get the vid

 

[CSIPSD]

Works here???

 

[slowleak]

try swithching to windows media player. worked for me.

 

[Dysfunctional]

wow

I also heard if I remove the underhood insulation I will gain 3mpg.

is this true?

 

[razorscs]

Is there a low/lower cost way of like turning off the stacks and have the exhaust come out under the truck? I can't tow my boat with the stacks :lame:

 

[CSIPSD]

Thats what I would get... You could get two valves and wire them reverse and then just a short piece of pipe running to the rear axle.... He sells a kit for that... Look here...

http://www.badlanzhpe.com/page6.html

 

[SixInARow]

That guy is a moron. The owner of my old 7.3 had hacked the exhaust off a couple of feet after the cat. When I got under the truck and really looked around everything behind the cutoff had anything from a light to heavy coating of soot that took almost two gallons of squirting on greased lightning and rinsing to get it off. Just straight pipe it I'd tell him.

 

[Dysfunctional]

Is there a low/lower cost way of like turning off the stacks and have the exhaust come out under the truck? I can't tow my boat with the stacks :lame:

grab some flex pipe, a Y pipe and plumb that sheeit through the rear slider :flipa:

 

[razorscs]

grab some flex pipe, a Y pipe and plumb that sheeit through the rear slider :flipa:

that probably is the best idea huh? lol

but thats CSIPSD that looks really nice, but i can't spend that much on that. do you know of a manual open/close version?

 

[CSIPSD]

That guy is a moron. The owner of my old 7.3 had hacked the exhaust off a couple of feet after the cat. When I got under the truck and really looked around everything behind the cutoff had anything from a light to heavy coating of soot that took almost two gallons of squirting on greased lightning and rinsing to get it off. Just straight pipe it I'd tell him.

What "guy" are you refering too? That is my cutout and I respect your opinion... but its my truck and I have no issues with it... I keep a clean truck...:lame:

 

[Strokinnotcumin]

I doubt you will see much of a difference if the stock dp is still in place...you can only get as much flow as the diameter of the dp