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Old 30 Oct 2016, 04:05 pm
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Default Exhaust work

I was thinking of doing a muffler delete. Then i saw some duals. Will adding duals do much for the pt turbo? I have a 2005 touring convertible with a GT ecu.
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Old 30 Oct 2016, 04:25 pm
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Default Re: Exhaust work

Dual tip or split muffler exhausts in most every configuration on a 1.6 or 2.4 gas fueled NA or Turbo Charged model PT Cruiser do absolutely nothing for power (and may reduce it?) except please the looks if that is what you like.

A muffler delete running with no muffler will increase noise levels overall and may create harmonic resonance ( acoustical vibrations in solids) which most dont like on long freeway drives.
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Old 30 Oct 2016, 04:36 pm
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Default Re: Exhaust work

Ok. Thank you. I originally just wanted to do the delete for sound. But thought maybe duals would add some horses instead of just sound.
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Old 31 Oct 2016, 08:19 am
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Default Re: Exhaust work

The dual you saw was most likely the Borla system. It just puts the muffler under where the spare tire is and puts an exit on each side. No power gain in any way. If anything you could make an argument for less power because of the amount of turns before exiting.

Dual exhaust systems only help with V type engines with two seperate exhaust manifold on opposite sides of the engine or inline engines with split manifolds. The extra flow with more cylinders needs more pipe to flow in. A larger diameter works, but having two smaller pipes allow manufacturers to install them in tighter spaces and lower ride heights. On a 4 clyinder engine one pipe is sufficient (even in turbo applications) to flow all the exhaust. Just like one bank of a V8. Quad tip exhaust you see on V8s are just a Y split right at the tip, not 4 sets of pipes each running 2 cylinders.
Why not run a pipe for each cylinder.... because of scavenging and flow characteristics. The flow causes a suction effect on other cylinders that helps to pull exhaust gases from the cylinder. With only 1 cylinder per pipe, you can't pull on the exhaust valve without exhaust gas flow present. Plus each cylinder would need an 02 sensor to adapt fuel per cylinder instead of the bank adjustments on current systems. Too much expensive engine management to be practical, and the power loss from the lack of scavenging is a double whammy.
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Old 31 Oct 2016, 09:00 am
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Default Re: Exhaust work

Your spending to much time looking stuff up on the internet . Some is just partial incomplete information. The one thing that many internet information leaves out is how thermal principles apply to exhaust systems. Why..because most dont know it through gaining knowledge instead of simply finding what others posted and changing words around. I am not saying this was you only what lots of website information do.

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Old 31 Oct 2016, 09:26 am
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Default Re: Exhaust work

Your all forgetting the best part about duals ....they look good!

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Old 31 Oct 2016, 11:28 am
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Default Re: Exhaust work

Yep, Duals are kool.



Here's my dual kit. back half of the Heartthrob duals kit



Sounds great to me, even subdued.
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Old 31 Oct 2016, 11:48 am
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Default Re: Exhaust work

Quote:
Originally Posted by Carnut View Post
Yep, Duals are kool.



Here's my dual kit. back half of the Heartthrob duals kit



Sounds great to me, even subdued.

You wouldn't have a recording of how those sound on your GT, would you? I've been considering those for my little toy convertible.
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Old 31 Oct 2016, 11:53 am
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Default Re: Exhaust work

I would suggest that the video be filmed from the center and about 6-8 feet back and than about a foot at each tip.

Dual section like this always flow out the shorter and pipes with least resistance and are still higher temperature.

Hot Rodders can always hear the fake dual tips...
You can always use a thermal hand held tool as well.
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Old 31 Oct 2016, 12:19 pm
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Default Re: Exhaust work

Quote:
Originally Posted by NitroPT View Post
...Hot Rodders can always hear the fake dual tips...
You can always use a thermal hand held tool as well.
The self-labeled "hot rodders" are definitely not the ones I'm not concerned with.
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