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Old 11-21-2009, 11:36 AM   #1 (permalink)
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Exhaust/Downpipe combination - need advice

Hey guys,

I just purchased a TKO Racing 3" Exhaust with 6" magnaflow mufflers. Before I go ahead and do the work to get it mounted, I wanted to know if I need to purchase a downpipe. Does it make a difference in terms of potential power gained that merits around $250 more? I'm not cheap and I would drop the money if I knew how much more power I would be getting. If the gains are minimal, then I won't worry about it. However, if there are other gains to be had, say better flow to the exhaust system then I'll definitely consider.

Also, I am looking online and I found a few downpipes such as the Tanabe brand. However, I haven't purchased from them before, so I'd like to have your guys' opinions about which downpipe to go buy if I do need one.

I always appreciate the input and I look forward to the advice. Thanks!

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Old 11-21-2009, 12:07 PM   #2 (permalink)
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Assuming you have a turbo, you will definitely want to replace the downpipe as well. I would get one of the $100 downpipes and then a $20 (or DIY) bracket to support the bottom of the downpipe to the block. Getting rid of the stock cat frees up so much room in there, it's not funny. You'll also get a fairly significant performance increase, especially since you're opening up the rest of the exhaust at the same time.
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Old 11-21-2009, 12:15 PM   #3 (permalink)
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Quote:
Originally Posted by Ghostyman View Post
Assuming you have a turbo, you will definitely want to replace the downpipe as well. I would get one of the $100 downpipes and then a $20 (or DIY) bracket to support the bottom of the downpipe to the block. Getting rid of the stock cat frees up so much room in there, it's not funny. You'll also get a fairly significant performance increase, especially since you're opening up the rest of the exhaust at the same time.

Yes, I own a 1991 Turbo. I will definitely go ahead and look into purchasing a downpipe then. When considering the purchase of a downpipe, I only need to worry about the diameter matching the exhaust, correct? Are there any other considerations for making the purchase?

Lastly, here's a downpipe that I am considering to purchase

http://www.nyxracing.com/berk-techno...9-p-47188.html

Let me know what you guys think.

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Old 11-21-2009, 01:21 PM   #4 (permalink)
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I agree with Ghostyman. The one you've listed from Berk says it's for a Gen 3 3sgte. Does that fit the
CT26 ?
I'm using a 3" DP from ATS Racing. It's powder coated,comes with the gasket,brace and has the O2 sensor bung and 2 additional bungs . It will increase exhaust flow and really make a difference.
Ghosty is also right when he says how much room it frees up in the engine bay.
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Old 11-21-2009, 06:28 PM   #5 (permalink)
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lol may free up the room, but what happens when it comes time for emissions?
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Old 11-21-2009, 06:36 PM   #6 (permalink)
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lol may free up the room, but what happens when it comes time for emissions?
Oops! Good point Scott.
I keep forgetting not all states are like mine with no emissions inspections.
That is very critical point in deciding wether or not to use a catless aftermarket DP and exhaust system.
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Old 11-22-2009, 06:32 PM   #7 (permalink)
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Oops! Good point Scott.
I keep forgetting not all states are like mine with no emissions inspections.
That is very critical point in deciding wether or not to use a catless aftermarket DP and exhaust system.
Hello all, Thanks for the advice. I just realized that the DP link I provided earlier is for later models 93+. I found the same Berk DP for models 91-95 compatible and I'll be calling them tomorrow to see if I can make the purchase.

As for now I reside where there are no emissions inspections however, I'll keep original the parts in case I move to a state with inspections.

Lastly, since I am working with the exhaust and downpipe I was thinking I'll go ahead and also invest in an intake for better flow. I am looking at purchasing a HKS Power Flow intake for my 91 turbo. I'd like to ask if anyone could weigh in on the topic of an intake in terms of what they bought and if they are happy with their purchase and if anybody has any experience with the HKS intake.

Thanks!

MR2 Guy

Last edited by MR2 Guy; 11-22-2009 at 06:35 PM.
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Old 11-22-2009, 07:00 PM   #8 (permalink)
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Originally Posted by MR2 Guy View Post
invest in an intake for better flow. I am looking at purchasing a HKS Power Flow intake for my 91 turbo. I'd like to ask if anyone could weigh in on the topic of an intake in terms of what they bought and if they are happy with their purchase and if anybody has any experience with the HKS intake.

Thanks!

MR2 Guy
A freer flowing intake will benefit the turbo nicely. But I think the HKS is way over priced.
I'm using a K & N cone ($40.00) with an 3" adapter .
Works great!
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Old 11-23-2009, 07:27 AM   #9 (permalink)
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I have a Downpipe if you want it. Let me see if i can find a picture of it.



EDIT: Here is the best i could find for right now still mounted on the manifold. Its actually in very decent shape. And like they said you definitely want one because not only will it give gains but removing it later is WAY easier than the stock one in case you ever have problems with stuff like the HFH. I am not sure on the brand since it was on the car when i got it. But i had this bolted up to my TKO exhaust without a problem. For price on this i guess like $60 + Shipping. PM me if interested
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Old 11-23-2009, 07:56 AM   #10 (permalink)
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Originally Posted by TheEngineer View Post
I have a Downpipe if you want it. Let me see if i can find a picture of it.



EDIT: Here is the best i could find for right now still mounted on the manifold. Its actually in very decent shape. And like they said you definitely want one because not only will it give gains but removing it later is WAY easier than the stock one in case you ever have problems with stuff like the HFH. I am not sure on the brand since it was on the car when i got it. But i had this bolted up to my TKO exhaust without a problem
As long as the DP is not cracked on the inside, I'm definitely interested in your offer. I have the 3" TKO exhaust not the 2.5" so if you have the 3" DP then please contact me via email and we can go ahead and negotiate from there.

My email is mr2guyturbo@gmail.com

Thanks for the post!
PS - as for the cold air intake, looking to see if I can find that K&N. If not I'll just grab the HKS.
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Old 11-23-2009, 08:48 AM   #11 (permalink)
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oh and on the intake thing...i have an adapter plate if you want it. All it is, is a bolt no plate that allows you to put any old cone filter on...here is a picture of that



you can see it mounted onto the end of the AFM
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Old 11-24-2009, 01:56 AM   #12 (permalink)
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A turbocharged car really doesn't benefit much from an easier flowing intake. The turbo is going to get the air it needs, no matter what it comes through first. To spend more than a few bucks on an intake is overpaying. Get the AFM adapter from John (or make one yourself), put a cone filter on it and be done with that.

As for the Downpipe, it will definitely make a difference as far as power goes. And adding a 2.5" downpipe with a 3" exhaust is actually beneficial sometimes. Having 3" all the way back can sometimes make boost control rather sloppy.

Just make sure you give yourself plenty of time for this install. You'll be lucky to get the stock downpipe off without breaking a few bolts.
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Old 11-25-2009, 08:33 AM   #13 (permalink)
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Originally Posted by 4DMR2t View Post
A turbocharged car really doesn't benefit much from an easier flowing intake. The turbo is going to get the air it needs, no matter what it comes through first. To spend more than a few bucks on an intake is overpaying. Get the AFM adapter from John (or make one yourself), put a cone filter on it and be done with that.

As for the Downpipe, it will definitely make a difference as far as power goes. And adding a 2.5" downpipe with a 3" exhaust is actually beneficial sometimes. Having 3" all the way back can sometimes make boost control rather sloppy.

Just make sure you give yourself plenty of time for this install. You'll be lucky to get the stock downpipe off without breaking a few bolts.
Thanks for the info. I have a new K&N filter and from looking at the cold air intakes that are being sold, the gains I would get would probably be marginal at best. Therefore, I'm not going to worry about the cold air intake and just focus on getting my new exhaust and downpipe put on. Also, I agree about getting the bolts off. I already looked at them and I'm going to spray them down and let them loosen up over night before I tackle this project.

Also, John I thank you for your offer, but I was able to find a 3" downpipe locally.

As always I greatly appreciate everyone's help and advice!!

I'll be sure to post pics when I'm done with my work!

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Old 11-25-2009, 10:57 AM   #14 (permalink)
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No problem. Let me know if you ever want the adapter plate for the cone filter.
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