The Supertrapp Project
Thread Starter
Safety Car
Joined: Nov 2009
Posts: 3,970
Likes: 340
From: Adelaide South Australia
here is a video, sorry but the quality isnt too good (cheap camera) and it makes a clicking sound (its not the car clicking !)
I dont think the camera can cope with the noise but it gives you an idea
just remember I can quieten the exhaust by removing baffle plates.
I dont think the camera can cope with the noise but it gives you an idea
just remember I can quieten the exhaust by removing baffle plates.
Pro
Joined: Aug 2011
Posts: 506
Likes: 57
From: New York
Sounds really good. When we put them on the Harleys I liked to use the open caps, they are equal to about 9 diffuser discs. You can remove some of the disc you have in these and install them. They are not much louder, except when you are at WOT.
That was a great price you bought these for.
That was a great price you bought these for.
Safety Car
Joined: Dec 2009
Posts: 4,360
Likes: 429
From: Birmingham Al
Sorry for my ignorance, what is the benefit of these? I've always thought you want the exhaust to flow as easily as possible, where as these seem to add an obstruction at the end of the system. I know callaway used them so Im not doubting them or saying they are no good, I just dont understand what you are trying to accomplish with them.
Team Owner
Joined: Sep 2003
Posts: 20,172
Likes: 672
From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
Looks good. I'd be concerned that the exhaust heat would damage the underside of the bumper.
Another suggestion to reduce resonance is have the pipes mounted so they are at least one inch past the body work.
Another suggestion to reduce resonance is have the pipes mounted so they are at least one inch past the body work.
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Thread Starter
Safety Car
Joined: Nov 2009
Posts: 3,970
Likes: 340
From: Adelaide South Australia
Took the car on a cruise last night and Im still very happy with the exhaust !
No resonance in the cab anymore, the car is much smoother to drive, it must have made some improvement to the engine efficiency, on a stretch of road into the city (80kph limit) and it was getting around 30 to 33 mpg !
The total cost of this project was $290,
jrriflecoach - I wanted to get them out 1 or 2 inches but the exhaust guy would have had to make up new joiner pipes to achieve it, I still have the option of having the stainless muffler slid down the pipe an inch, but that will involve getting it up on the hoist again and getting the oxy out,
383vett - its only 2 bolts to remove the inserts and run straight thru, I will give it a try and see what its like !
now its on to my next project. . . .
No resonance in the cab anymore, the car is much smoother to drive, it must have made some improvement to the engine efficiency, on a stretch of road into the city (80kph limit) and it was getting around 30 to 33 mpg !
The total cost of this project was $290,
jrriflecoach - I wanted to get them out 1 or 2 inches but the exhaust guy would have had to make up new joiner pipes to achieve it, I still have the option of having the stainless muffler slid down the pipe an inch, but that will involve getting it up on the hoist again and getting the oxy out,
383vett - its only 2 bolts to remove the inserts and run straight thru, I will give it a try and see what its like !
now its on to my next project. . . .
