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Old 10-12-2013, 12:15 PM   #1
wrprojex
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I just bought a 14 wrx, I want to make good numbers but also maintain a low profile, that being said I planned on doing perrin headers, invidia catless dp, cobb intake, cobb ap, intercooler, custom tune ( I have these parts sitting in my garage). Ive done a bunch of research and called several shops but I cant get a straight answer. I don't want to do a cbe unless I absolutely have to because I want the car to be extremely quiet, some shops say its fine but i'm leaving some power on the table, and some say the car wont be happy and run right. How important is the cbe for reliability, will I be choking it badly, how much power am I going to lose? As for the intercooler, will the stock one handle 300 whp reliably ( 100k miles) or should I just upgrade, and if im spending the money anyways, would a tmic do what I need or would a fmic be the best route....also, how close am I to maxing out my injectors at 21psi? as you can tell I'm extremely worried about reliability first, and sound second, all of these questions have been answered, but I keep getting different opinions from different people and I just want a solid answer before I get tuned. Thanks in advance and sorry for the newbie question
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Old 10-12-2013, 12:22 PM   #2
SlimJim8804
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I've been under the impression that cat-back exhausts are just for noise.

As far as the IC, it's a worthwhile upgrade as the stock core is crimped to the endtanks and many users have reported failures, even on stock cars.
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Old 10-12-2013, 01:25 PM   #3
jerbull88
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For 300whp just a dp and stock top mount will be fine. Your injectors will be pretty much maxed at 21psi. The stock cbe won't be much of a restriction at all at that power level. The stock tmic may or may not last at those levels but I'd run it till it went. A front mount would be overkill on the stock turbo.
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Old 10-12-2013, 01:35 PM   #4
wrprojex
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You guys are awesome that's exactly what I wanted to hear lol, last questions(for now)... What injectors are the first step up from stock, can I buy anything to make an Sti intercooler work?, if I do get bigger injectors and I drive very carefully and responsibly, will my gas mileage change? Will my stock fuel pump handle the job? Thanks again, I have researched but it's hard to pinpoint the exact answers to these questions
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Old 10-12-2013, 01:53 PM   #5
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Down pipe for power, tmic so the stocker doesn't split, injectors and pump just to be safe and give you headroom. Problem with running the stock injectors maxed out is the high duty cycle isn't good for them and if they start to have a problem you can have a big problem before you notice it. Catback and intake are both just noisemakers at that power level.
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Old 10-12-2013, 01:54 PM   #6
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Gas mileage will only suffer when your beating on it. Low throttle driving nicely your mileage may even improve from the less restrictive down pipe
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Old 10-12-2013, 02:54 PM   #7
jerbull88
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Sti intercooler will never fit. Bigger injectors will only give more headroom with no change with normal driving. A fuel pump is kind of a "why not" because of the ease and low cost. Your stock injectors will handle your turbo unless you choose to go e85.
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Old 10-12-2013, 06:09 PM   #8
wrprojex
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ok great thank you all very much, so I asked my buddy what size injectors to go with and he said 1000cc because injectors are all around the same price so why not.... what do you guys think? also, what brand do you recommend?
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Old 10-12-2013, 06:23 PM   #9
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Quote:
Originally Posted by wrprojex View Post
ok great thank you all very much, so I asked my buddy what size injectors to go with and he said 1000cc because injectors are all around the same price so why not.... what do you guys think? also, what brand do you recommend?
Do you plan to go big at any point? If you plan to stay on a stock turbo you don't need much bigger then stock so if just look for a deal on some used ones from somebody going bigger.
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Old 10-12-2013, 07:28 PM   #10
trev762
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Quote:
Originally Posted by jerbull88 View Post
Sti intercooler will never fit. Bigger injectors will only give more headroom with no change with normal driving. A fuel pump is kind of a "why not" because of the ease and low cost. Your stock injectors will handle your turbo unless you choose to go e85.
Huh!!! Lol an STI ic would fit fine as long as the op gets the STI splitter also/.

Op first and up most talk to a reputable tuner that would be doing the tuning as they're the ones that would be doing the tuning.

Last edited by trev762; 10-12-2013 at 07:34 PM.
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Old 10-12-2013, 07:34 PM   #11
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Huh!!! Lol an STI ic would fit fine as long as the op gets the STI splitter also/.
Not positive if they changed anything for 14 but the 13s use a completely different intercooler between wrx and sti. The wrx cooler bolts directly to the turbo outlet the sti one uses a y pipe and coupler like the GDs
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Old 10-12-2013, 07:58 PM   #12
trev762
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Quote:
Originally Posted by cowboy_Rob View Post

Not positive if they changed anything for 14 but the 13s use a completely different intercooler between wrx and sti. The wrx cooler bolts directly to the turbo outlet the sti one uses a y pipe and coupler like the GDs
Oops!!! Ya my bad I guess I had gd in my head lol. Thx for the correction:/.
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Old 10-12-2013, 08:14 PM   #13
point78
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Id1000 injectors, processwest tmic, Dw65c fuel pump-it drops right in no mods required. (id's are really nice injectors-don't worry about the big size, they idled my 1.6l better than the stock injectors...). MAC 3port ebs, or whatever brand. Forge bpv.

Don't get a FMIC, it adds like 10' of charge tubing(seriously), kills your spool (and blocks the radiator)

Last edited by point78; 10-12-2013 at 08:42 PM.
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Old 10-12-2013, 08:19 PM   #14
point78
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A catted downpipe won't hurt your max hp(at these levels), it will cause your turbo to spool a little later vs a non catted. But the vf52 spools fast anyways.

The cat acts as a really good muffler, you take it out it's gonna be louder/raspy er...

You didn't ask, but you should also get:

Whiteline front and rear sway bars. 22mm both, or (24mm front, 22 rear)
Kart boy endlinks-front & rear
After that you'll want the whiteline bushing inserts for the rear end, that way the rear diff won't move when you hammer it(the stock bushings have some open slots in them, you can feel the diff move/clunk when you get on it)

Last edited by point78; 10-12-2013 at 08:32 PM.
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Old 10-12-2013, 10:30 PM   #15
wrprojex
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Awesome guys, thanks for all the info, ill keep u posted with charts... Why is it taking so long for Cobb to release everything, if the '14 is the same as the '13, then what's going on I'm getting impatient haha
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Old 10-13-2013, 01:53 AM   #16
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Because the 14 is still a month or two old. It takes time to make the necessary map and adjustments.

Why didn't you read the Manifesto or search? Zing!
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Old 10-13-2013, 04:09 PM   #17
wrprojex
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I searched a good amount about mods but assumed the 14 was the same as the 13, and you know what they same about assumptions.... Made an As$ out of me
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