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DURATEC Ti-VCT Performance (2012-Current) The place to chat about any Duratec 2.0L Ti-VCT engine performance, tuning and exhaust related upgrades.

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Old 06-01-2012, 11:52 AM   #41
extek67
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Originally Posted by greg hazlett View Post
I am buying the cat back system for the Hatchback, will be installing it and will post the reviews once I have it on.

Cheapest price I have found is for $640 shipped.
where did you get them at that price
thanks john
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Old 06-01-2012, 12:01 PM   #42
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Originally Posted by BaconZombie View Post
I just don't understand why most aftermarket exhaust systems for our cars are only 2.25". Just seems like kind of a waste to me, but to each his own.

And for the record, Redfocz and I have nearly identical systems, part-wise.

Oh, and I started my Focus after we unbolted the system right after the cat, and it wasn't even horribly loud then. My '11 Sonata was at least twice as loud when I did the same thing. Our cars actually have a nice, deep, throaty exhaust sound.
I think that BORLA really didn't see the need to go 2.5, they are not the new kid on the block and if they put out 2.25 system then there testing must have shown more gains. On the other hand they might have seen insignificant gains with 2.5 and was not cost effective.

Same argument could be made with the Air intake. Some reuse the stock rippled intake pipe and some do not. Its 3-5hp either way.


Quote:
Originally Posted by amoosenamedhank View Post
I might have missed this in all of the exhaust threads but did either of you post a parts list of the mufflers you went with?

Are you also using a muffler where the 'lunch box' was? If possible, I'd prefer to do a resonator up line and an oval muffler in the back... exiting out the drivers side for simplicity.
The Borla is the same setup as stock, but you could buy the universal parts and configure it driver side out. BTW there is no drone from Gregs exhaust.
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Old 06-01-2012, 12:55 PM   #43
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Originally Posted by BaconZombie View Post
I just don't understand why most aftermarket exhaust systems for our cars are only 2.25". Just seems like kind of a waste to me, but to each his own.

And for the record, Redfocz and I have nearly identical systems, part-wise.

Oh, and I started my Focus after we unbolted the system right after the cat, and it wasn't even horribly loud then. My '11 Sonata was at least twice as loud when I did the same thing. Our cars actually have a nice, deep, throaty exhaust sound.
I don't see a need for 2.5" exhaust on these cars. I'm running 2.5" exhaust on my 420rwhp mustang and it's plenty. I don't see needing any more on one of these engines.
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Old 06-01-2012, 01:37 PM   #44
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Quote:
Originally Posted by Bwill9886 View Post
Holy crap, I didn't realize the mufflers on the Borla system were the exact same as what I picked out (except for mine are 2.5").



I remember when we were about to start up mine after the install my exhaust guy was thinking the same thing. His words I believe were:

"You realize this things gonna be loud as f%@k right?"

I told him to just wait and see. He was surprised as hell when it's merely growled to life and crackled a bit when you gave it some gas. You get what you pay for with Borla (IMO).
It seems so. I am impressed. I think a lot of people forget this is a 12.0:1 compression engine. That is hard to muffle. For that little resonator and that little muffler to keep it quiet means they are well-built.
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Old 06-01-2012, 01:39 PM   #45
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I would like to know the vendor he got it from too.
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Old 06-01-2012, 01:47 PM   #46
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Quote:
Originally Posted by JL330 View Post
I don't see a need for 2.5" exhaust on these cars. I'm running 2.5" exhaust on my 420rwhp mustang and it's plenty. I don't see needing any more on one of these engines.
Is that single or dual exhaust? If it's single, I would absolutely go to 3". I work in a shop where we do a LOT of exhaust work. Guy here owns a gen 3 Taurus SHO and has 3" all the way from the cat back. Sounds awesome and is functional.

Moose, the muffler I use is part #12646. 6" round, 18" long Magnaflow. It's in place of the front muffler in the middle of the car, and I'm not running any resonators. I know Redfocz is running his muffler in the rear where the lunchbox was, and is running a resonator, so they both sound different.

And I always took Borla as more of an exhaust for sound, not for performance. Most people that are going for full performance get custom jobs. I wanted sound and performance, so I went with a custom set-up with 2.5", but that's what I wanted. I wasn't knocking the 2.25" exhaust, I was merely asking a question.
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Old 06-01-2012, 01:50 PM   #47
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Originally Posted by zx3matt View Post
I would like to know the vendor he got it from too.
When he posted the price it was either AJUSA or LMPerformance.
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Old 06-01-2012, 01:54 PM   #48
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BTW found this tool for all to enjoy.

I did not make so no need for negative comments:

http://www.mk5cortinaestate.co.uk/calculator5.php
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Old 06-01-2012, 02:02 PM   #49
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Quote:
Originally Posted by BaconZombie View Post
Is that single or dual exhaust? If it's single, I would absolutely go to 3". I work in a shop where we do a LOT of exhaust work. Guy here owns a gen 3 Taurus SHO and has 3" all the way from the cat back. Sounds awesome and is functional.

Moose, the muffler I use is part #12646. 6" round, 18" long Magnaflow. It's in place of the front muffler in the middle of the car, and I'm not running any resonators. I know Redfocz is running his muffler in the rear where the lunchbox was, and is running a resonator, so they both sound different.

And I always took Borla as more of an exhaust for sound, not for performance. Most people that are going for full performance get custom jobs. I wanted sound and performance, so I went with a custom set-up with 2.5", but that's what I wanted. I wasn't knocking the 2.25" exhaust, I was merely asking a question.
If you work at a muffler shop you of all people should know NOT to go larger than needed on an exhaust pipe....why everyone is faciniated with thinking a larger diameter exhaust is going to produce more power is beyond me and plain wrong.

Going larger than necessary can reduce backpresure which in turn hurts performance; maybe 2.5" is ok but I have to belive these exhaust companies would know what size is optimal for sound and performance and I have said it countless times before with regard to the performance gains on the 2012 Foucs; there is only so much power we are going to get out of a 4 cyl 2.0 liter NA engine.
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Old 06-01-2012, 07:16 PM   #50
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What part numbers do you have. I think the front one is 40842S the same as FB58. The rear could either be 40364 or 40941.
Correct on the front one (40842S)
My rear is 40364.

Quote:
Originally Posted by greg hazlett View Post
If you work at a muffler shop you of all people should know NOT to go larger than needed on an exhaust pipe....why everyone is faciniated with thinking a larger diameter exhaust is going to produce more power is beyond me and plain wrong.

Going larger than necessary can reduce backpresure which in turn hurts performance; maybe 2.5" is ok but I have to belive these exhaust companies would know what size is optimal for sound and performance and I have said it countless times before with regard to the performance gains on the 2012 Foucs; there is only so much power we are going to get out of a 4 cyl 2.0 liter NA engine.
While back pressure is important, I've always thought the bigger concern with exhausts is what I like to call the "flow vs. velocity ratio." Simply put, the best combination of flow and velocity = the best gains. You are able to move the most exhaust gases you can at the highest rate.

Go too big, you have the ability to move a lot of exhaust gases, but not at an optimal rate. Go too small, and you're getting the exhaust gases out more quickly, but at a lower volume than you could.

I bet there are a couple reasons most companies went with 2.25" and I suspect cost, familiarity (other stock, N/A 4 cyl. use that size, why not this?), and potentially higher stock gains play the biggest roles. It's all speculation though until someone asks. I'd love to know and I could very well be proven wrong.

I would, however, bet heavily that in a competition between 2.5" and 2.25" with a header, intake, and a tune that 2.5" will net you more power (whp AND I'll go ahead and bet wtq as well). I of course could be proven wrong and that's fine, but looking at other newer N/A 4 cylinders in similar "situations" tells me otherwise.
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