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Bolt-On Power Mods Intake, exhaust, intake manifold, ignition, fuel system, cooling, etc.

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Old 05-31-2007, 07:38 PM   #1 (permalink)
 
Registered: May 2007
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NEW, Need advice on upgrades

I just got my evo been saving up for a while for this car. I got 2005 evo8 and I love it.
I need some advice on the upgrades where should i start and with what? Another thing is about exhaust what exhaust can i get thats not to loud? Can i do 3" downpipe and no cat but keep the stock exhaust? I been ready a little about the dynoflash and i heard some guys say that with only dynoflash on stock evo you can get up to 40hp is that true?
Thanks
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Old 05-31-2007, 08:01 PM   #2 (permalink)
 
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Timeslip: 11.510 @ 115.12
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Welcome, and great choice on the Evo.

Do be sure to search around and learn some things first, though. We're definitely here to help, but it also helps if you do some work on your own and read all the great advice we've already given to others with the same questions.

Here is a thread showing a package I created that includes what I consider to the basic stg1 mods that any Evo should have - in your case an Evo VIII (different mods from IXs):

https://www.evotuners.net/forums/showthread.php?t=2004

You by no means have to get those exact mods, but that combination of mod types is what you want to look at doing. I can't help you much with keeping the exhaust quiet. Yes, you can do a test pipe and DP connected to the stock cat. That's backwards and won't net a lot of power, but it will definitely be much quieter than doing a full exhaust or even just a cat-back.





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Old 05-31-2007, 11:52 PM   #3 (permalink)
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Here's a little something too;
https://www.evotuners.net/sub.php?page=stage1power
As far as quiet exhausts; a while back Turbo Magazine tested a few (March '06). The stocker tested 92dB at idle and at 3000 RPM's. The one that caught my attention was the Turbo XS; made good power, not the most, but tested 94dB at idle and 98dB at 3000 RPM's. All others were louder.
An exhaust with one ore two resonators is going to be quieter then an exhaust with none, but it will be heavier too. Also make sure those resonators are a consistant diameter to the rest of the piping with a straight through perferated core for best flow.



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Old 06-01-2007, 06:25 AM   #4 (permalink)
 
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Thanks for all your help,
Do you have the picture of the turbo xs exhaust? or the name of it,
thanks
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Old 06-01-2007, 10:37 AM   #5 (permalink)
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From their website they only had an exhaust pic with the DP and TP in it;
http://www.turboxs.com/shop_car2.php?car=3

PS
Don't get confused with XS Engineering (a whole different company) or XS Power (Chinese stuff).



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Old 06-24-2007, 11:43 PM   #6 (permalink)
 
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Quote:
Originally Posted by turbolarry View Post
Here's a little something too;
https://www.evotuners.net/sub.php?page=stage1power
As far as quiet exhausts; a while back Turbo Magazine tested a few (March '06). The stocker tested 92dB at idle and at 3000 RPM's. The one that caught my attention was the Turbo XS; made good power, not the most, but tested 94dB at idle and 98dB at 3000 RPM's. All others were louder.
An exhaust with one ore two resonators is going to be quieter then an exhaust with none, but it will be heavier too. Also make sure those resonators are a consistant diameter to the rest of the piping with a straight through perferated core for best flow.
I tried finding the article on Turbo Magazine's site ... couldn't find it. Does anyone has a link to it, or a copy of the article? Thanks.
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Old 06-25-2007, 12:10 AM   #7 (permalink)
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I've searched their web site, but I couldn't find it. I just have a copy of the issue. When I get back from camping I can post the results from the other exhausts.



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Old 06-25-2007, 10:54 PM   #8 (permalink)
 
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id be interested in that as well larry.
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Old 06-28-2007, 08:12 AM   #9 (permalink)
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Originally Posted by boostinpsi View Post
id be interested in that as well larry.
+1 Please post them when you get a chance.
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Old 07-04-2007, 12:06 PM   #10 (permalink)
adx
 
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Let me help larry out...

STOCK
35.50lbs
92db @ idle, 92db @ 3000rpm

RS-R EX MAG
33.65lbs
95db @ idle, 101db @ 3000rpm

ESPELIR JGT 500
27.15lbs
95db @ idle, 102db @ 3000rpm

BLITZ NUR-SPEC
27.80lbs
97db @ idle, 101 @ 3000rpm

HKS CARBON-Ti
35.50lbs
96db @ idle, 102db @ 3000rpm

A'PEXi GT-SPEC
27.80lbs
95db @ idle, 102db @ 3000rpm

SKUNK2 MEGA POWER
28lbs
96db @ idle, 101db @ 3000rpm

TANABE MEDALION CONCEPT G BLUE
22.15lbs
96db @ idle, 101db @ 3000rpm

TURBO XS
27.10lbs
94db @ idle, 98db @ 3000rpm

5ZIGEN MIRACLE FIRE
20.25lbs
97db @ idle, 101db @ 3000rpm

INJEN SUPER SES
27lbs
95db @ idle, 100db @ 3000rpm

GREDDY RACING Ti
13lbs
98db @ idle, 102db @ 3000rpm

BUSCHUR RACING
23lbs.
*not sure on db level... may have to measure mine. I think its louder than DD's TurboXS.

FUJITSUBO LEGALIS-R
27.1lbs
92db @ idle, 97~98db @ 3000rpm (this one is approx from various threads.)

I was going to get the TurboXS after hearing Dyno Dude's evo BUT.... I HATE THE JDM EXIT. Sorry, it does nothing for me. I went with the Buschur Bullet tbe with TP. Love it

Last edited by adx; 07-04-2007 at 12:16 PM. Reason: Added a few others.
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Old 07-04-2007, 03:35 PM   #11 (permalink)
 
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Hey, ADX, thanks for that, but I'm pretty sure the HKS Carbon Ti weight is wrong.





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Old 08-29-2007, 07:41 AM   #12 (permalink)
 
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Welcome. Allot of people make foolish mistakes modifying their Evos, and by seeking information you have taken the first step toward not being one of them. They are great cars stock, so be sure that every mod you do is actually an improvement you will use. However even just a few simple and well chosen mods can produce great improvements.
Yes, freeing up the exhaust and ECU tuning are excellent places to start!
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