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Old 04-28-2014, 10:54 AM   #151
Mishimoto
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Quote:
Originally Posted by Redeemed77 View Post
Heck yes it would!

Without a tune making 25HP is just bonkers! Where are you going to find 25HP for $300?

Mishmoto, question:

I noticed when I let my Pontiac G8 GT breath better (an engine is essentially a pump) that I actually gained about .5-1mpg along with better sounds and snappier acceleration. Was it a placebo or can an air intake that is helping your engine breath easier in term provide some fuel saving capabilities?

Very excited for my WRX and your products!!! Now....where to find the money...lol
Thanks for the kind words! The intake we designed is very impressive in terms of output, induction noise, and ease of installation.

An intake can certainly result in improved engine efficiency and mileage. Depending on the season, this could have also been a result of temperature change. Often times an aftermarket intake will provide slightly leaner A/F ratios which will result in improved fuel mileage.

We are still hard at work on the 2015 WRX, more updates in the near future.

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Originally Posted by aSquard View Post
Subscribing :-)
Thank you!
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Old 04-28-2014, 06:45 PM   #152
RTFM
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Default differential housings

Any idea if the 15WRX differential housings are the same as the old ones?
I'm looking to buy a Quaife helical LSD up front, and do the install before my old car sells.
This link makes it sound like they were all the same in the past
Quaife ATB Helical LSD Differentials - STi, RS, Legacy!, but no one is advertising compatibility with the '15 model year.
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Old 04-28-2014, 11:15 PM   #153
-vanguard-
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You guys think you can get the LED C's to light up as the only DRLs for the car?
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Old 04-29-2014, 02:07 AM   #154
WestLoopWRX
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Quote:
Originally Posted by RTFM View Post
Any idea if the 15WRX differential housings are the same as the old ones?
I'm looking to buy a Quaife helical LSD up front, and do the install before my old car sells.
This link makes it sound like they were all the same in the past
Quaife ATB Helical LSD Differentials - STi, RS, Legacy!, but no one is advertising compatibility with the '15 model year.
I would be curious too since I want to do the same.

Rear differentials in the WRX were historically R160's (160mm ring gear) and STIs used an R180. However, it sounds like some of the drivetrain from the STI may now be used on the WRX so it isn't clear what differential the 2015 WRX has (r160 or R180). Unfortunately, the factory service manual does not clear this up either. All it says is the new housings are "B1" or "B2." While "B" housings have usually been R160s, I'm not confident enough to go out and buy a Quaife (or even an OBX + belleville washers). Never mind that we don't know if the new WRX axle stubs are the same as in years past.
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Old 04-29-2014, 10:36 AM   #155
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Quote:
Originally Posted by WestLoopWRX View Post
I would be curious too since I want to do the same.

Rear differentials in the WRX were historically R160's (160mm ring gear) and STIs used an R180. However, it sounds like some of the drivetrain from the STI may now be used on the WRX so it isn't clear what differential the 2015 WRX has (r160 or R180). Unfortunately, the factory service manual does not clear this up either. All it says is the new housings are "B1" or "B2." While "B" housings have usually been R160s, I'm not confident enough to go out and buy a Quaife (or even an OBX + belleville washers). Never mind that we don't know if the new WRX axle stubs are the same as in years past.
The rear differential on the 2015 WRX is an R160! We have yet to confirm any information regarding the front differential.
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Old 04-29-2014, 10:38 AM   #156
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Quote:
Originally Posted by WestLoopWRX View Post
However, it sounds like some of the drivetrain from the STI may now be used on the WRX s
Such as?

The hubs?
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Old 04-29-2014, 11:59 AM   #157
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I'm still trying to figure out how their intake gains 25whp/wtq on a stock tune EJ, much less a tuned one. Has anyone done a third party dyno to verify the claims? I understand the improved readability of the MAF due to the revised channel in the intake, but that won't account for those gains. Sorry for being critical, but I've been down this road MANY times with vendor power claims. Third party before and after dynos are the only way to go, IMO.
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Old 04-29-2014, 01:02 PM   #158
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Quote:
Originally Posted by Mishimoto View Post
The rear differential on the 2015 WRX is an R160! We have yet to confirm any information regarding the front differential.
so aftermarket rear LSD for previous gen will work on the 15?
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Old 04-29-2014, 06:11 PM   #159
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For the 2015 WRX, how do you suppose a front or rear LSD would change the driving dynamics of the car?
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Old 04-29-2014, 06:24 PM   #160
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Hi guys, I know that the new 2015 WRX is 5x114.3 +55 for the offset. I was wondering if the gold BBS with 115 bolt pattern would fit safely if not is there a kit to change them?
I put a link to the wheels I would like to buy.

http://www.hubcaphaven.com/mm5/merch...egory_Code=753
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Old 04-29-2014, 06:28 PM   #161
Ultimateone
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Those are stock STI wheels, they will fit
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Old 04-29-2014, 06:35 PM   #162
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Quote:
Originally Posted by Ultimateone View Post
Those are stock STI wheels, they will fit
Thank you very much for the information. So even though its a 115mm bolt pattern there is no issues with it fitting correctly on the 2015 hub with out modification?

~Thanks again
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Old 04-30-2014, 09:53 AM   #163
Mishimoto
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Quote:
Originally Posted by MaddMax View Post
I'm still trying to figure out how their intake gains 25whp/wtq on a stock tune EJ, much less a tuned one. Has anyone done a third party dyno to verify the claims? I understand the improved readability of the MAF due to the revised channel in the intake, but that won't account for those gains. Sorry for being critical, but I've been down this road MANY times with vendor power claims. Third party before and after dynos are the only way to go, IMO.
Check out our build-thread for the intake on our engineering blog below. This highlights the design and testing process for this particular product and will explain how we managed to pull so much power out of the intake.

http://engineering.mishimoto.com/?cat=85

Thanks

Quote:
Originally Posted by jonoc4 View Post
so aftermarket rear LSD for previous gen will work on the 15?
It appears so!
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Old 04-30-2014, 12:01 PM   #164
aSquard
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Quote:
Originally Posted by -vanguard- View Post
You guys think you can get the LED C's to light up as the only DRLs for the car?
There is a relay that was unplugged near the horn in the engine bay that accomplishes this and still allows the high-beams to function ::Linky::
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Old 04-30-2014, 12:40 PM   #165
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Quote:
Originally Posted by aSquard View Post
There is a relay that was unplugged near the horn in the engine bay that accomplishes this and still allows the high-beams to function ::Linky::
Yeah but this does not make the led c's run as the DRL . I'm waiting for someone to allow the c's to be on while driving around
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Old 04-30-2014, 12:50 PM   #166
Lminette
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Front LSD's tend to induce understeer so I would think the same would be the case if a front LSD was added to the new WRX. However that understeer could probably be dialed out with some suspension tuning. If anything I'd go for a rear LSD as that will enhance the dynamics of the car.
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Old 04-30-2014, 12:56 PM   #167
Traumlik
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^^ Thinking out loud here. At the end of the day, minimizing the loss of traction is probably why we want to install LSD in the first place. So it seems like the logical thing to do is to first determine which axle / wheel tends to lose traction first in aggressive driving, and then we slap an LSD on that end, followed by some suspension tuning to adjust the handling behaviour.

Does that sound about right? And if it does, I wonder which end should the LSD go into first...
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Old 04-30-2014, 12:56 PM   #168
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^^ Thinking out loud here. At the end of the day, minimizing the loss of traction is probably why we want to install LSD in the first place. So it seems like the logical thing to do is to first determine which axle / wheel tends to lose traction first in aggressive driving, and then we slap an LSD on that end, followed by some suspension tuning to adjust the handling behaviour.

Does that sound about right? And if it does, I wonder which end should the LSD go into first...
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Old 04-30-2014, 01:20 PM   #169
RTFM
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Quote:
Originally Posted by Traumlik View Post
^^ Thinking out loud here. At the end of the day, minimizing the loss of traction is probably why we want to install LSD in the first place. So it seems like the logical thing to do is to first determine which axle / wheel tends to lose traction first in aggressive driving, and then we slap an LSD on that end, followed by some suspension tuning to adjust the handling behaviour.

Does that sound about right? And if it does, I wonder which end should the LSD go into first...
with a 50/50 bias for power, and the old rule of steering radius vs pedal position for traction, the front should lose traction first in nearly all situations.
Also the torque vectoring via using the brakes only happens on the front wheels of the wrx. An LSD up front should reduce the inner wheel braking often responsible for bogging the engine.
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Old 04-30-2014, 01:29 PM   #170
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^^ Thank you for the simple but crystal clear explanation!
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Old 05-01-2014, 12:41 AM   #171
WestLoopWRX
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When we are talking about the front LSD, we need to be more precise. A torque biasing LSD (e.g. TorSen, Quaife) shouldn't induce understeering since it will do its own equivalent of torque vectoring. Clutch-type LSDs, though, are trouble on the front wheels because they lock the axle, inducing scrubbing and understeer.
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Old 05-01-2014, 12:55 AM   #172
WestLoopWRX
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Quote:
Originally Posted by SoapBox View Post
Such as?

The hubs?
From page 2:

Quote:
Originally Posted by Mishimoto View Post
Sorry, it appears that none of these drivetrain components are compatible with previous generations.
That was why I asked.

So are the rear axles are the same as the 2014 axles? If the splines match up, that would be great!
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Old 05-01-2014, 02:15 PM   #173
Mishimoto
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Quote:
Originally Posted by WestLoopWRX View Post
From page 2:

That was why I asked.

So are the rear axles are the same as the 2014 axles? If the splines match up, that would be great!
Thanks for catching this! The rear axles appear to be the same as the 14 WRX, although we cannot confirm 100%. We are hoping to inspect this further soon!
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Old 05-01-2014, 04:09 PM   #174
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Quote:
Originally Posted by WestLoopWRX View Post
I think I know the answer, but is there any chance some vented rotors off of a Legacy would fit on the rears? Or would it require the typical "H6" rear rotors *and* calipers?
MRT in OZ is saying (video) that the vented rear rotors from a BRZ could fit a 2015 rear; swap calipers and rotors & done. if true...
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Old 05-01-2014, 04:10 PM   #175
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will 08+ sti brembos bolt up to 2015 wrx?
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