Blake-73

I am running Dynomax Super Turbo's on my 73. Police been been by the house twice already because of noise. If I installed a H pipe would that lessen the noise a bit or should I just go to new muffler's, like maybe flowmaster 50 series?

Blake-73


[Modified by Blake-73, 12:16 AM 12/16/2001]

AlwaysWave

They're on my 72 with an H-pipe..it's not loud at all....low mellow grumble.

63Banshee

I don’t see how Dynomax turbos could be that loud. They are certainly quieter then Flowmasters (not to mention sound better). Yes, an H-pipe will help by killing some of the resonance. Go with that and tell your neighbors to stick it.

Blake-73

The car really is'nt that loud, but I got a bad habit of fooling around with it in the driveway at night. Plus, my wife says she can hear me for a mile away when I am runing it out, which I am also in the habit of doing at night because of less traffic.

Last police office that came by actually was cool....was real interested in the car, but said I can not let it sit and idle after 9 pm. So now I just drive it and make sure I goose it real hard when I go by the house on my street that called the police.

I hope the H-pipe works...Are Super Turbo's really better sounding than flowmaster 50 series?

Blake-73

Frank75

Why not just be a good-guy and behave better around the house? Maybe they got small kids or something. IMO it's not worth pissin' off the neighbours... after all you have to live somewhere.

Blake-73

Well, I try t behave but the car calls me to come play and usually I give in. Plus, it's really not that loud.

Blake-73

Rumpity Rump

An 'X' pipe is much better . It really dampened the sound of mine...especially at speeds over 40 mph. Throttle response is noticably touchier.

RR

Blake-73

Where did you place the x-pipe? I heard an X pipe will actually make the exhaust louder and was told to go with an H-pipe instead. I was looking at the X pipe originally anyway..Glad to hear what you said.

Blake-73

John Dirks

I'm interested also in which method is better, X or H.
The H seems like it might be easier to install.
Anyone with experience on this out there?

63Banshee

No doubt! :yesnod:

63Banshee

I ran an X pipe in the car below before they were manufactured by anyone that I can remember (about 7 years ago) and I swear by them for serious performance cars... if made properly. I fabricated my own paying meticulous attention to exhaust flow and would opt for my own design again over the mass produced X pipes. Either way, I'd say they have an advantage over H pipes in flow characteristics and scavenging.

LT1driver

Be nice to the neighbors :D don't want them to hate you and vettes too. :lol:

AlwaysWave

It was Chevy High Performance or Car Craft that made a comparison on the two a few issues back. The x-pipe produced more power than the h-pipe. Some say the x-pipe has a higher pitch sound whereas the h-pipe is lower. In our Vettes, the easiest and best place for the H-pipe is right behind the trans crossmember. I see in the Jegs catalog, they have an extended length H-pipe for $165 that might be worth looking into.

Frank75

I think the X is more efficient but harder to do on our cars. I know that you can buy H-kits from places like Summit for ~$35 or so. I'm planning on one in the spring.

Ganey

A crossover pipe will help quieten some. An X pipe can be put under the rear end.

Rumpity Rump

I had my X put right behind the crossmember. I bought the X pipe from Jegs and had Midas Muffler put it on. They charged me $135 which included them using the 45 degree pipes to go in and out of the X , and they welded everything on. It looks very professional the way they did it. ANd , it made a difference on the performance and sound. Its a quieter more resonant sound .... and i even have Headers. Its great at higher speeds cause you dont even hear the exhaust much so i can hear my radio now. The article in that magazine defintely said to go with teh X, cause of sound waves , equalizing pressure effect , and exhaust stroke scavenging. It actually increases the volumetric efficiency of the cylinders which accounts for the performance increase. I think i paid Jegs $159 for thier 'X' kit. An H doesnt work as well, but will help somewhat.

RR

Rumpity Rump

You want the X put as close as possible to the Heads, for maximum effectiveness. It fits well right behind the crossmember using 45 degree fittings.