exhaust H pipe?
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,886
Likes: 9
exhaust H pipe?
I put high flow (Magnaflow) mufflers on my smallbock over the winter. I find that they too loud for my taste, especially at lower RPM's.
How much improvement could be expected by adding an H crossover pipe across the exhaust pipes? It's either that or switch back to the stock mufflers.
How much improvement could be expected by adding an H crossover pipe across the exhaust pipes? It's either that or switch back to the stock mufflers.
Tech Contributor
Joined: Jun 2004
Posts: 20,850
Likes: 959
From: I tend to be leery of any guy who doesn't own a chainsaw or a handgun.
I put an H pipe at the header reducers. Very noticeable change in tone harshness, and a slight reduction on noise level.
Most guys take the easy route and place the H pipe too far back, negating a lot of its purpose and effectiveness.
Most guys take the easy route and place the H pipe too far back, negating a lot of its purpose and effectiveness.
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Burning Brakes
Joined: Mar 2005
Posts: 800
Likes: 2
Just take it to a good muffler shop they can put a crossover tube close to the engine. It would be a lot cheaper than buying a prefab h pipe. Cost me $20 to do it. Made a big difference in the amount of drone my C4 had with flowmaster 40's
Burning Brakes
Joined: Oct 2008
Posts: 1,037
Likes: 14
From: Mobile Alabama
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
If you don't like the sound of those welded tin can mufflers your best bet is the Walker "Dynomax" series.....the tin can mufflers are all right for Camaros and Mustangs or if you like noise, but not Vettes......
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
The Dynomax are really good tried and true
Clip of the Hooker super comp turbos.
know on a milder motor they are much quieter.
Nevr ever got low pitched hum or resonance which is what I liked.
Put something else on.....make more power but got resonance now lol
Pick your poison or go stock
http://www.youtube.com/watch?v=d_sSUV1VyUY
Clip of the Hooker super comp turbos.
know on a milder motor they are much quieter.
Nevr ever got low pitched hum or resonance which is what I liked.
Put something else on.....make more power but got resonance now lol
Pick your poison or go stock
http://www.youtube.com/watch?v=d_sSUV1VyUY
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,886
Likes: 9
So, this morning I went to Meineke Muffler in Mountainside, NJ. They welded in a 2" H type balance pipe just behind the center crossmember.
Nice clean job. Nice guys.
1)The drone is very slightly improved. It quits a little bit lower in the RPM range. Maybe within the margin of error.
2)The exhaust sound is definitely less rowdy. I might miss that.
3)The sound levels at higher RPM's and loads are VERY much reduced. Highway cruising is very pleasant now. And under WOT, I can hear the induction sound again. Before the H pipe, the sound was completely drowned out by the bellowing exhaust.
4) I had to richen the idle fuel screws a half turn. It was idling a bit lean after the installation.
5) All in all, an H pipe is a good thing. I'm pleased.
Nice clean job. Nice guys.
1)The drone is very slightly improved. It quits a little bit lower in the RPM range. Maybe within the margin of error.
2)The exhaust sound is definitely less rowdy. I might miss that.
3)The sound levels at higher RPM's and loads are VERY much reduced. Highway cruising is very pleasant now. And under WOT, I can hear the induction sound again. Before the H pipe, the sound was completely drowned out by the bellowing exhaust.
4) I had to richen the idle fuel screws a half turn. It was idling a bit lean after the installation.
5) All in all, an H pipe is a good thing. I'm pleased.
Last edited by gcusmano74; Oct 26, 2012 at 04:07 PM.