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Need some advice on exhaust system
#677292 December 21st 2014 6:02 pm
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I was under my van the other day and realized that my exhaust system was just a Y into the Catalytic Converter and then 1 single exhaust pipe running right out under my Runningboard on the drivers side. It does sound nice but would I get better performance and better gas mileage if I replaced the Cat with a good muffler?

What single muffler would everyone recommend? I have the 5.2 318 V8, I don't have to worry about emissions.


Take Care,
Kevin

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Re: Need some advice on exhaust system
KevinWangxxx #677302 December 21st 2014 7:08 pm
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SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Need some advice on exhaust system
KevinWangxxx #677313 December 21st 2014 9:51 pm
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Wow.. A matter of prefrence for sure. Each has it's own sound. For what it's worth you can find soundclips that the manufacture posts to give you some ideas.
Like this https://www.youtube.com/watch?v=3HrgH5g78zQ

Last edited by cwb440; December 21st 2014 9:52 pm.

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Re: Need some advice on exhaust system
KevinWangxxx #677314 December 21st 2014 10:18 pm
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Will it help with performance and gas milage? Right now I barely get 10.5 to 11 miles to the gallon. And my van weighs 6900 fully loaded.


Take Care,
Kevin

Re: Need some advice on exhaust system
KevinWangxxx #677319 December 21st 2014 10:54 pm
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I wouldn't count on it. Not a noticeable amount anyway. Not on a stock engine. Maybe a measureable gain (on a dyno), and it would be at higher rpm.

Can buy a lot of gas for the price of an exhaust system lol!

Keep it tuned up and tire pressures right is your best solution there.


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Re: Need some advice on exhaust system
cwb440 #677320 December 21st 2014 11:06 pm
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Well, we on average go through about 4 to 5 tanks of gas a week. We travel constantly. We just went from Atlanta to Orlando, then West Palm Beach and Orlando Again then to Miami and back to Orlando and then we just came up to Chattanooga, and now we are in Evansville,IN and heading to Bloomington,IL tomorrow and then Chicago and Michigan by Christmas. And thats all been in less than 2 weeks. So gas milage is also something I'm looking to improve.

I heard that not having a muffler decreases torque, because it needs some back pressure.


Take Care,
Kevin

Re: Need some advice on exhaust system
KevinWangxxx #677326 December 22nd 2014 12:20 am
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Originally Posted by KevinWangxxx

I heard that not having a muffler decreases torque, because it needs some back pressure.

Totally not true.Have you ever seen a monster truck with a muffler or Funny car with a muffler.

Re: Need some advice on exhaust system
KevinWangxxx #677360 December 22nd 2014 12:18 pm
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I agree with Hoagie. Also consider removing the windshield visor and turtle top. Should help a little on the highway anyway.


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