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i hate it when people get disgruntled for stupid reasons...
Because this thread is for just videos of exhausts so people can hear and see them. Not to ask what works or sounds best every other page. You scroll through the thread, listen and find what you like then go to your local shop and have them fab it up.

Sure, 13 years ago you could order a system straight from a company and be good. But this car hasn't been made for over 10 years so your only real solution is to hit up your local exhaust specialist shop and say I want 'x' sized pipe with 'x' series muffler and tips. Expect to pay $350 on the low end or up to $800 for full stainless pipes, Borla muffler and resonated tips. This is just for the cat-back setups, btw.
 

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Besides a little power and some noise, do any of the systems mentioned increase the MPG at all for anyone who has one installed, if the thrill has gone and you drive semi-normal again..?

Coming from driving old muscle cars, this quietness is a tad boring...

I still have a 69 Pontiac 400 RAIII engine on the stand, a spare from all the GTOs I owned, and all the go fast goodies if I ever find a worthy shell, thinking a Ventura to make a 74 clone.

I could get my thrills from exhaust there unless there is a MPG gain hidden somewhere on the Cougar then I would invest into some rumble...
 

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8 MPG would be a serious 25% gain...
would love to hear from some who experienced this and what they used...
This 2.5 should get 40 MPG in my opinion driven conservatively..
 

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Yeah, I would expect at best it would be on the lower end of MPG gain on what JScullin posted, not the top end of that. Also, these are not the current 2.5L direct injected I4 engines found in cars today. The development of the Duratec 2.5L V6 engine design is getting close to 20 years old now. It is not going to muster 40MPG ever.
 

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8 MPG would be a serious 25% gain...
would love to hear from some who experienced this and what they used...
This 2.5 should get 40 MPG in my opinion driven conservatively..
I have a simple K&N open air filter, BAT intake tube, MSDS headers and a Borla exhaust. The car was EPA rated 19city/28hwy and I easily see 24 city and 32-33 hwy when driving it modestly.

YMMV, of course.
 

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Ah, thought there was hope... I'd take the 4 MPG though with today's gas prices.

If that is the SVT intake n throttle body, cold air intake, and some cat back system, I am all in. Might ditch the 45 series tires for some 55 series and see if can get rid of that road noise n hammering on the rough roads. Taller tire would lower the RPM but give more drag under body.

Side note, back in 80's I had a 78 Monte Carlo with a 200 V-6, 3.2L, dual jet carbureted, all stock that would get 40 MPG on the highway, in 90's a 1984 Pontiac 6000 with a 2.5 throttle body and stick that would get 40 MPG, so your theory about old tech I do not follow...

That system with the tailpipe exiting before the rear tire isn't street legal unless you take out back seats, at least in this state, exhaust has to exit past the furthest back passenger compartment...

Saw reply from other member with headers while typing this out, nice.. headers are more than I want to commit to, if I went that far would do the 3.0 swap.
For the cat back I was going to increase pipe size to 2.5 and run a SuperTrap at the exit.

Thanks for the replies to my question...
 

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i saw around 34 in my current car the day i got it but the front roll restrictor had snapped off the bellhousing so i had to drive it VERY easy. Since then ive done well over half the performance mods found. needless to say it doesnt get drove that nice anymore so Im down in the 20's somewhere, or was before I tore it apart right before fest. curious to see what it gets now.
 

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I'm getting like 25-26 mpg's at 70, and about 23-24 at 80 with a 3l and stock exhaust. But with the RPM at 3-3.5k, I'm not surprised. If the gearing for 5th gear was at 2k for 70, I'm sure we'd be getting great gas mileage. Those numbers are with the A/C on, I'm sure they go up at least one in the winter.

I personally think the MTX sucks for gas mileage once you get above 60 MPH.
 

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im pretty sure iv mentioned this several times before. i averaged 100 for a tank and i gained about 4 mpgs that tank. pretty crazy, but yes i agree 5th gear at least should have been geared for lower rpm
 
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