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Old 02-06-2018, 10:25 PM   #51
Harey
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Quote:
Originally Posted by n2oiroc View Post
i love these threads. a guy gets the correct answer but doesnt like it so he keeps asking until someone tells him what he wants to hear. a cooler or torque converter will not increase the torque capacity of the cvt. the chain flat out cannot handle more torque and remain reliable and there is no way to fix it currently. the only way a cvt will hold up under stage 2 power is if you dont use the stage 2 power. its not a question of will it fail, its when will it fail.
the torque converter is the first thing to fail not the chain. the torque converter predominantly fails from heat.

AMR Performance have developed an upgraded torque converter and a trans cooler:
http://shop.amrperformance.com/produ...erter-upgrade/
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Last edited by Harey; 02-06-2018 at 10:36 PM.
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Old 02-06-2018, 10:35 PM   #52
Harey
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Originally Posted by subiecvt View Post
I currently own a 2017 WRX with a CVT and I have been Stage 2+ for roughly 5 months and I absolutely love it! No problems so far. I even recently hit the 20,000km mark and she has no indications of slipping or reduction in power. She is also my daily vehicle, back and forth to work.

Mod lists include:
Mishimoto CVT Trans Cooler
Perrin CAI
Perrin Turbo Inlet
Perrin 100% Recirc BOV
Grimmspeed TMIC+Charge Pipe
Grimmspeed EBCS
Mishimoto TGV Deletes
EGR Delete
Crawford V3 AOS
Invidia Catless Downpipe + Intermediate Catless Pipe
COBB AP V3 Protune
Boost: 18psi Target

What everyone seems to not understand is HOW you drive your car. If you tend to be conservative, a modded CVT will undoubtedly last a long time. Be a more aggressive driver with a modded CVT however, it won’t like you as much and one reason because of this is continuous boost throughout acceleration because of no “shift points” in the CVT (unless you count the S# mode). The second point is where the CVT does not like Low RPM-High Boost periods which can cause a fair bit of stress on the chain/belt. You could say that the chain/belt slipping to be considered it’s “weakness” but there are many other CVT Tuned WRX’s in Japan that are tracked and have no problems due to the addition of proper CVT cooling modifications and proper tunes that account for the Low RPM-High Boost areas.

I push my car to the limit ***SOMETIMES*** but that’s on rare occasions because I respect where the limitations of the transmission can go to. I treat my car with respect and she treats me by helping me know that it won’t break down.

My opinion on modified WRX’s with a CVT: HELL YEAH GO FOR IT! ***BUT*** do remember that there are limitations that affect how much power output you could put out (transmission etc) and secondly, HOW you tend to drive your car. Also, make sure to keep up with the required fluid checks and daily maintenance to make sure your CVT won’t crap out on you.
I think everyone understands that if you tune your car for lots of hp but never give it full throttle your gearbox will last forever.

high boost/low rpm/high load, is this only in manual mode? In auto mode, you should never experience it, it will simulate changing down gears.

the only thing that needs to be monitored imo is the trans temperature.

"daily maintenance and fluid checks" - what do you mean by this? check the fluid level
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Old 02-06-2018, 10:48 PM   #53
subiecvt
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Originally Posted by Harey View Post
I think everyone understands that if you tune your car for lots of hp but never give it full throttle your gearbox will last forever.



high boost/low rpm/high load, is this only in manual mode? In auto mode, you should never experience it, it will simulate changing down gears.



the only thing that needs to be monitored imo is the trans temperature.



"daily maintenance and fluid checks" - what do you mean by this? check the fluid level


Lots of people are asking “can I safely go Stage 2 in my CVT?”. Well of course they can but that’s what they don’t understand is what I’m taking from it all. Hell, you could go whatever Stage you’d like but it all depends on how you tend to drive the vehicle and what it’s intended use is for (daily/track).

And by the “Low RPM-High Boost” area I’m talking about is when you say do a Brake-Torque launch or constantly pounding on the throttle from a stand still or from a slow rolling start around 1k RPM.

You would also need to monitor the CVT Deterioration included with the CVT Temp.

Sorry, I meant monthly checks. I shoot for once a month and park my vehicle in a garage and close off both the inlet and outlets for the CVT Trans Cooler and make sure that there is still roughly the 3/4 to 1 quart of the HTCVT Fluid inside the cooler because there is always the potential for fluid leaks and I want to stay on top of the HTCVT Fluid level.
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Old 02-06-2018, 10:59 PM   #54
Harey
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Originally Posted by subiecvt View Post
Lots of people are asking “can I safely go Stage 2 in my CVT?”. Well of course they can but that’s what they don’t understand is what I’m taking from it all. Hell, you could go whatever Stage you’d like but it all depends on how you tend to drive the vehicle and what it’s intended use is for (daily/track).

And by the “Low RPM-High Boost” area I’m talking about is when you say do a Brake-Torque launch or constantly pounding on the throttle from a stand still or from a slow rolling start around 1k RPM.

You would also need to monitor the CVT Deterioration included with the CVT Temp.

Sorry, I meant monthly checks. I shoot for once a month and park my vehicle in a garage and close off both the inlet and outlets for the CVT Trans Cooler and make sure that there is still roughly the 3/4 to 1 quart of the HTCVT Fluid inside the cooler because there is always the potential for fluid leaks and I want to stay on top of the HTCVT Fluid level.
Fair point about the intended use.

I disagree that full throttle from a standstill/slow rolling start is a problem. A gearbox cant see boost it can only see torque. Peak torque is above 3000rpm anyway. I think you are getting confused with accelerating hard in a high gear at low speeds in a manual.

The ecu already seems to have a slight delay built into it when accelerating hard off the line. Except when you do launch mode.
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Old 02-07-2018, 12:45 AM   #55
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Quote:
Originally Posted by Harey View Post
the torque converter is the first thing to fail not the chain. the torque converter predominantly fails from heat.

AMR Performance have developed an upgraded torque converter and a trans cooler:
http://shop.amrperformance.com/produ...erter-upgrade/
the torque converter is not the first thing to fail, can you post any links to torque converters failing? what exactly is breaking in them and how does the new one fix it? amr has a longstanding reputation for junk products and shady claims, that pos trans cooler and "upgraded" torque converter is no exception.
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Old 02-08-2018, 10:14 AM   #56
Abismo
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Quote:
Originally Posted by n2oiroc View Post
the torque converter is not the first thing to fail, can you post any links to torque converters failing? what exactly is breaking in them and how does the new one fix it? amr has a longstanding reputation for junk products and shady claims, that pos trans cooler and "upgraded" torque converter is no exception.
lol yikes heh. I like that pic though... lets put the cooler up top where itll get heat soaked to ****. Ive never seen a cooler mounted up top like that for a transmission. terrible idea.
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Old 02-08-2018, 05:39 PM   #57
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Originally Posted by Abismo View Post
lol yikes heh. I like that pic though... lets put the cooler up top where itll get heat soaked to ****. Ive never seen a cooler mounted up top like that for a transmission. terrible idea.
its also a terrible cooler to start with. those cheap $25 tube and fin coolers dont work well and are easily damaged. if they are going to bend people over, they should at least give them a good stacked plate cooler.
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Old 02-08-2018, 05:43 PM   #58
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Originally Posted by n2oiroc View Post
its also a terrible cooler to start with. those cheap $25 tube and fin coolers dont work well and are easily damaged. if they are going to bend people over, they should at least give them a good stacked plate cooler.


I really like the way lasthumangarage did his. Damn near oem looking install. And proper front mount. I’m not sure of what other style there is for that other than tube and fin? Some sort of liquid to liquid exchanger?
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Old 02-08-2018, 06:18 PM   #59
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Originally Posted by Abismo View Post
I really like the way lasthumangarage did his. Damn near oem looking install. And proper front mount. I’m not sure of what other style there is for that other than tube and fin? Some sort of liquid to liquid exchanger?
http://derale.com/products/fluid-coo...t-ports-detail
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Old 02-08-2018, 06:20 PM   #60
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Originally Posted by n2oiroc View Post
reminds me of the aio in the pc sitting next to me.
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Old 03-17-2018, 07:28 PM   #61
Payback45
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Do you guys recommend a tune when adding a mishimoto TMIC with charge pipe to a 2016 wrx cvt with Cobb big sf intake and AP stage 1+ tune?
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Old 03-18-2018, 10:41 AM   #62
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What will happen if I run it with out a tune? Will I see any benefits with out a tune?
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Old 03-18-2018, 02:54 PM   #63
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Quote:
Originally Posted by Payback45 View Post
I do have the AP. I am stage 1+
Hey, what do you think about the stage 1 difference? Curious because I just did same on mine.
BTW, I drove a CVT when I bought mine and I was tempted so the wife could use it too, beside I hated the 1-2 shift hang. The CVT is certainly an option for some. Nothing wrong there. I did get a 6 speed and a tune to correct all that.
Enjoy your mods!
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Old 03-18-2018, 07:24 PM   #64
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I’m happy with it. It has more get up and go.
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Old 10-18-2019, 03:28 PM   #65
Afactor1234
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I have a 2015 WRX stage 2+ CVT

Mods are:

Mishimoto race intake
Perrin charge pipe
Garrett TMIC
TGV deletes
EGR deletes
Cobb catted Jpipe/midpipe
GReddy RS race Exhaust Cattback
Grimmspeed 3 port EBCS
Mishimoto dual catch can (CCV &PCV)
Mishimoto trans cooler

310 WHP 340 TQ on 91 20psi boost
My tuner kept low Rpm torque down till around 2000rpm then the car pulls all the way till 6500.
Car runs amazing! don’t let people on Nasioc who don’t own the car give you advice on the transmissions power levels. It’s all in the tune. Car sits at just over 100,000 miles
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Old 10-18-2019, 04:51 PM   #66
GlarryHoodDIT
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How many of those 100,000 miles have been tuned?
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Old 10-18-2019, 05:53 PM   #67
Insecticon
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I've got a 2019 WRX CVT that is being protuned with some mods presently by a motorsports shop. They gave me great consultation about what is and is not recommended with respect to the longevity of the CVT.

So I'm going with this, fairly conservative to start, based on their recommendations. I don't know (or much care) what "stage" this would be, but anyhow..
. Cobb intake
. Cobb catback
. EGR delete (kit custom by shop)
. 3 port boost control solenoid (custom by shop)
. AOS
. Cobb Access Port + Protune/dyno, etc.

Once this shakes out, I'll take it back to them for a checkup on the next oil change interval, etc.

I'm considering an aftermarket CVT cooler and, I've heard there may be a way to strengthen/upgrade the torque converter -- both as lines of defense for CVT. Not that I plan to drive in a punishing manner, but still.

Fwiw, I don't intend to track this. This is a daily driver that I take out for "fun" on weekends, do 4-5 hour roadtrips in every so often, etc.

Prior to this, I drove it bone stock for 13.5k miles, no issues. Fun car. This was all about making it just a bit more "fun".

Last edited by Insecticon; 10-18-2019 at 06:00 PM.
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Old 10-18-2019, 10:39 PM   #68
n7slc
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Quote:
Originally Posted by Insecticon View Post
I've got a 2019 WRX CVT that is being protuned with some mods presently by a motorsports shop. They gave me great consultation about what is and is not recommended with respect to the longevity of the CVT.

So I'm going with this, fairly conservative to start, based on their recommendations. I don't know (or much care) what "stage" this would be, but anyhow..
. Cobb intake
. Cobb catback
. EGR delete (kit custom by shop)
. 3 port boost control solenoid (custom by shop)
. AOS
. Cobb Access Port + Protune/dyno, etc.

Once this shakes out, I'll take it back to them for a checkup on the next oil change interval, etc.

I'm considering an aftermarket CVT cooler and, I've heard there may be a way to strengthen/upgrade the torque converter -- both as lines of defense for CVT. Not that I plan to drive in a punishing manner, but still.

Fwiw, I don't intend to track this. This is a daily driver that I take out for "fun" on weekends, do 4-5 hour roadtrips in every so often, etc.

Prior to this, I drove it bone stock for 13.5k miles, no issues. Fun car. This was all about making it just a bit more "fun".


Don’t consider a cooler, GET a cooler. The CVT needs to stay cool.
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Old 10-19-2019, 03:38 AM   #69
Afactor1234
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Originally Posted by GlarryHoodDIT View Post
How many of those 100,000 miles have been tuned?
30,000 miles.
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Old 10-19-2019, 03:41 AM   #70
Afactor1234
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[quote=Insecticon;46151176]I've got a 2019 WRX CVT that is being protuned with some mods presently by a motorsports shop. They gave me great consultation about what is and is not recommended with respect to the longevity of the CVT.

So I'm going with this, fairly conservative to start, based on their recommendations. I don't know (or much care) what "stage" this would be, but anyhow..
. Cobb intake
. Cobb catback
. EGR delete (kit custom by shop)
. 3 port boost control solenoid (custom by shop)
. AOS
. Cobb Access Port + Protune/dyno, etc.

Once this shakes out, I'll take it back to them for a checkup on the next oil change interval, etc.

I'm considering an aftermarket CVT cooler and, I've heard there may be a way to strengthen/upgrade the torque converter -- both as lines of defense for CVT. Not that I plan to drive in a punishing manner, but still.

Fwiw, I don't intend to track this. This is a daily driver that I take out for "fun" on weekends, do 4-5 hour roadtrips in every so often, etc.

Prior to this, I drove it bone stock for 13.5k miles, no issues. Fun car. This was all about
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