Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

04cali's build #2 with more mods, more boost, and more fun!

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Old 10-19-2009, 10:18 PM
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Originally Posted by meilers
They have one that's one step further but it looks more like the JIC/bullet-style exhausts with a giant 4.5" hole and is MUCH more likely to **** off cops. The 350 is a conservative figure, Dyno-Comp in Scottsdale (who tuned my car) has cranked out dozens of 400whp STIs with the 3" exhaust; one of them was a cover car on Sport Compact Car in 2006. Rich, who owns the shop, likes to use APS exclusively and is even featured on the APS site.

If you want to go with the bigger exhuast here it is:

http://www.airpowersystems.com/us_sp...wrx-hoe-r5.htm

Good for 600whp, but MUCH louder and more noticeable. My 3" system looks very stock, it looks similar to the SPT exhaust from the 2006-2007 STIs.
I really thank you for the help!! It looks like I will be getting the APS single top 3" exhaust, but I can find a catback. all I see is a turbo back for $900 and thats way more than I want to spend. or the Tanabe medalian touring

http://www.assaultech.com/tanabe/tan.../i-130441.aspx

Last edited by 04caliwrx; 10-19-2009 at 10:28 PM.
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Old 10-20-2009, 11:27 AM
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Originally Posted by 04caliwrx
I really thank you for the help!! It looks like I will be getting the APS single top 3" exhaust, but I can find a catback. all I see is a turbo back for $900 and thats way more than I want to spend. or the Tanabe medalian touring

http://www.assaultech.com/tanabe/tan.../i-130441.aspx
Matt, this is the same exhaust I have on my STI but it only comes as a full TBE. You'd have to sell your downpipe as well.

-- Ed
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Old 10-20-2009, 11:46 PM
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^ I would buy the turbo back but the money tree is out of season and I got nothing left haha
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Old 03-20-2010, 05:05 PM
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Just a update!

On the way back from Tahoe today I stopped by eqtuning to have my new mad dad CBE installed, Ed had time to tune the car after the CBE install and the car put down some great numbers for being ****ty cali 91. The car is a freckin beast and just does not stop going. First through third go past in about 4 seconds. Tell the track I say hello 11's!!



Dyno numbers
352 whp
347 wheel torque
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Old 03-23-2010, 07:38 PM
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Wow! Nice numbers!! Did you ever upgrade your tranny?
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Old 03-23-2010, 08:27 PM
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Originally Posted by DerekB707
Wow! Nice numbers!! Did you ever upgrade your tranny?
No that's still on the stock WRX trany... Sti trany is going in sometime next month when I do get the 6 speed u will see 100 whp more with the help if some c16 : )
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Old 03-23-2010, 08:43 PM
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Hey Matt you ever look into building the 5speed? I'm thinking of getting PPG straight cut gears.
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Old 03-23-2010, 09:04 PM
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Originally Posted by LOL Vtec
Hey Matt you ever look into building the 5speed? I'm thinking of getting PPG straight cut gears.
Yes but the the gears are only as strong as the case the gears are going into, the WRX case is also really week. You will also have to upgrade the difs and stuff, plus a 6 speed cost about the same... I would rather have the Sti trany
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Old 03-23-2010, 11:57 PM
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video link

http://www.youtube.com/watch?v=rybV3VoM-6s
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Old 03-24-2010, 08:37 AM
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Originally Posted by LOL Vtec
Hey Matt you ever look into building the 5speed? I'm thinking of getting PPG straight cut gears.
I would go with the full 6MT swap, the benefit is the DCCD and R180 lsd. PPG's are awesome gearsets, but with the kind of hp numbers you are wanting, I would think more traction would be better with the 6MT! My car even at only 280whp drives unbelievably different now than when I had the 5MT in, it is a complete different driving experience! The cost is very comparable between the swap by the time its all said and done.
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Old 04-14-2010, 04:25 PM
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^ thats what I'm doing! its the ^ speed FTW
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Old 04-15-2010, 01:58 PM
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Whenever your ready, im still waitin! :P
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Old 05-21-2010, 10:16 AM
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UPDATE!! I now have my sti 6 speed trany and Brembo's installed!! I wuill post pix up soon.
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Old 05-21-2010, 10:28 AM
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Originally Posted by 04caliwrx
UPDATE!! I now have my sti 6 speed trany and Brembo's installed!! I wuill post pix up soon.
You lucky son of a......

Im just starting to save up for that stuff. New 2.5......and tranny.....and clutch....and everything else i need..... SO MUCH MONEY I NEED

lets see some pics and vids. You need to come to a meet over here so i can see the beast.
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Old 05-21-2010, 10:30 AM
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Big Country doin it big...
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