2.5 cvt

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gnorie89
Posts: 19
Joined: Mon Feb 04, 2008 10:28 am
Car: altima coupe 2.5

Post

Hey, i was just wondering if anyone had heard of anyway to inprove the "performance" of our cvt transmission. I have had several issues with it pertaining to the size of my rims 20", and my straightpipe exhaust. I am considering the stillen headers, intake and bullly dog tuner. But i am afraid that my cvt will end up giving me more problems.

Also, I have ready through all 29 pages of the bullydog fourm, and wanted a straight response form the 2.5ers that own the product. Is it worth it, and are there still issues with it.

Thanks in advance for the help .


cartersaltima
Posts: 205
Joined: Wed Nov 28, 2007 7:45 am
Car: 2007 altima sedan

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Welcome to nico. I know like u mentioned there are a few "engine" mods like fly wheel, pulley,header etc. As far as transmission mods for the cvt, iv heard of a few people on here "beefing" up their transmission at the shop when they were having their turbo modified and installed. anyway good luck.

gnorie89
Posts: 19
Joined: Mon Feb 04, 2008 10:28 am
Car: altima coupe 2.5

Post

thanks for the help man, but do you, or anyone for that matter, know exactly what is being done to the transmission to "beef" it up. I am no car expert, but i know a thing or two, and have not been able to find much on building up the cvt.

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kerrton
Posts: 2161
Joined: Mon Feb 04, 2008 8:48 am
Car: 2008 Nissan Rogue SL FWD Gotham Gray
Location: Southern Alberta, Canada

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I hate to say it but I doubt there is any modfications that can be done to the CVT (I'm a Rogue CVT owner by the way, had lots of problems early on, did lots of research). The Nissan service techs can't even work on them because they don't have the specialized equipment necessary that only Nissan manufacturing plants have. One reason is the equipment is very expensive and the other is that it requires specialized training. Apparently when they build these things the pre-load torque required is very high - not sure exactly if that refers to the installation of the CVT steel belt or what specifically but the bottom line is that the CVT is a highly precise and unique piece of equipment that very few people have knowledge of.

So my reason for posting is out of concern for you, if you happen to run into someone at a local transmission shop for example who claims that they can do marvelous things to your CVT, don't believe them. Even if he's a "transmission guy" he won't have experience with a CVT, not even Nissan techs can rebuild these units, and he'd probably end up doing serious damage and your new 10 year CVT warranty would be voided and you'd be left with a $4 to $5000 bill to replace the thing - again no shop can rebuild them so you'd have to order a new one from the manufacturer.

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dldjros69
Posts: 3170
Joined: Fri Sep 21, 2007 3:52 pm
Car: 2012 Evo Gsr
A/C 2.5 Turbo 6MT (SOLD)
Location: Quakertown Pa

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gnorie89 wrote:Also, I have ready through all 29 pages of the bullydog fourm, and wanted a straight response form the 2.5ers that own the product. Is it worth it, and are there still issues with it.

Thanks in advance for the help .
hell yeah its worth it. i had it for 6 months and sold it (turboed now).

The bd tuner worked well with my stillen header.

Not sure whats wrong with your cvt but with bolt ons you wont need a beefier transmission.


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