I have a 3 inch single exhaust pipe and flowmaster. I was wanting to know if there is enough room at the exhaust splitting point under the passenger side door to be able to put in a 3 inch cut-out. One muffler shop I talked to said they wouldn't do it for me because there was not enough room for the extra pipe to exit out the side of the car. "The pipe would pretty much just be dragging the ground."
Does anyone have any experience with this type of thing? Any suggestions?
I am new at working on cars, so please bear with me.

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'91 Z28 Coupe 350
Flowmaster, K&N

 

put the cutout after the rear axle and add another 3" tailpipe. that way it will look like dual 3". You can even have different plates made between the tailpipe and the cutout just like the Borla adjustable system

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-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Soon to be installed:
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz

 

I already have dual 3 inch tips exiting out the back. Do you know of any way to have the exhaust exit before the back tire?
The way my exhaust is setup, It is only 2 1/2 inch until it hits that breaking point under the door, then it widens into 3 inch.
Would it be possible to have a 2 1/2 inch cutout before it widens into the 3 inch? Maybe then the muffler shop would be able to maneuver the smaller pipe to exit before the rear tire.
Any possibilities of that working out?
Thanks for the help.

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'91 Z28 Coupe 350
Flowmaster, K&N

 

sounds like you should just get headers.

 

I had a muffler shop put in a summit cutout. They trimed the ends of the cutout off and then cut the pipe and put it in. IT is kinda close to the groudn, but i think i have only scrapped it once. Also they only charged me $25

 

Yeah, dtpmike's right. I have the flowmaster single 3", and the summit cut-out. I made the mistake of not painting/coating it. Rust! But, no problem with the exhaust shop.
Obviously, the exhaust shop is going to have to do some cutting to fit the cut-out before your exhaust splits.

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No guts, no glory.

 

I have a 1987 GTA, 3" exhaust pipe and was going to put one of those new electric cut outs. Has any body tried that? will it hit the ground?

 

I`m not sure but I`d like to know how well they work and if tou get noticeable gains out of it.I was thinking about getting one myself.

 

i had mine put in about a foot in front of the rear axle there is a open spot.

 

So it's after the cat, I was thinking of having mine before the cat. but my clearance is better closer to the real wheels. I don't have my car here, it's in winter storage.

 

is this what you are looking for?

 

heres one more at the ground level, i havnt hit ground back here yet.

I DO AVOID Speed bumps at all cost due to my low hanging y pipe

 

what kinda gain do you get from the cutout?

 

ok i am not a exhaust expert, so i am just telling you "my" story
ok i believe it all depends on the total exhaust system from start to finish.
when i dyno-ed her she gain about 35 torque at the rear tires.
and only a whooping 5 hp when opened, but thats mostly middle to upper range rpm levels like full drag cars at the track, open headers.
placement of the cutout is important too.
actually down low when i have it open she kind on dogs, not enough backpressure.
but i mostly us the cutout for SOUND!!! its so much louder

 

if im still running the original 305 with 9.3:1 compression ratio, will putting a cut-out in increase my power or would it be a waste of my time and money?

 

It would lose a lot of low end power