[iqraceworks]

Definitely have some money set aside for the transmission. Even with solenoids, new seals, and fresh fluid....there is no guarantee that it's going to hold 500hp/lots of tq...without slipping.

My car is stage 2+ and probably making close to 400hp.....and even with solenoids, seals, and fresh fluid....in the higher gears it wants to slip some times.

And all it takes is slight slippage....and it puts the transmission in limp mode, and locks it in a gear of it's choosing.......it stinks.

[tomasp001]

Originally Posted by iqraceworks

Definitely have some money set aside for the transmission. Even with solenoids, new seals, and fresh fluid....there is no guarantee that it's going to hold 500hp/lots of tq...without slipping.

My car is stage 2+ and probably making close to 400hp.....and even with solenoids, seals, and fresh fluid....in the higher gears it wants to slip some times.

And all it takes is slight slippage....and it puts the transmission in limp mode, and locks it in a gear of it's choosing.......it stinks.

Just a question,do we have any upgrade options for our tranny's?

[tomasp001]

Originally Posted by nissubaru

The good news is that you aren't really losing out on much if you build your car to 400whp levels and then decide you want to go bigger in the future. That means dual cone intake or inlets, downpipes, intercooler and a charge pipe/BOV setup. As stated by others you're gonna need upgraded twins/single turbo kit, fueling (port injection), inlets and a custom tune to get over 500whp reliably but you aren't throwing anything away that you previously installed.

What's it cost like $1000 or so for the charge pipe, dci, downpipe and intercooler? Get a custom tune or buy the MHD Stage 2+ tune pack and run it like that for a while. If not enough power for you then you can always start saving up for the 500+whp goal. But do realize you're probably looking at another $3000 in mods. Not to mention when you get near 500WHP the stock DMFW will begin to cause misfires in the upper RPM range so you'll want to upgrade to a SMFW and something like a Stage 2+ or Stage 3 clutch. Some people might like it or don't care but I think my SMFW is pretty annoying. They're quite loud compared to stock. But that would probably cost you another $1000-1500.

And then I'd have to ask if you plan on doing any of the work yourself? If not get ready to pay even more money lol It's a pretty cheap platform if you just wanna go FBO but after that things cost a lot more money.

I am guessing "DMFW" and "SMFW" are regarding fly wheels... I have an auto and in my research, it starts to slip around 550whp. but another reply stated that his vehicle starts to slip on higher gears and he's only around 400whp.. if this is the case I am doomed. LOL. So my question is... is there any upgradability except for the xHP flash for an auto trans?

[iqraceworks]

The options are pretty limited. You can get a stock rebuilt done ($2,500+$3,000).....but that doesn't guarantee it's going to hold 500hp. There are a couple guys out there that are putting high performance clutches in them.....but I've been quoted $4,000+ for a rebuild with those.....but they say they are good to 800+ hp.

The xHP transmission flash is supposed to help with shifts, but not sure if it really helps with them holding more power.

Long story short.....options are limited, and expensive.

Hopefully someone else will chime in with more info.

[Jeef]

my buddy runs around at about 600whp on his auto trans. seems to be fine so far.


get a replacement transmission if it's slipping that bad.


look into nizpro(billet basket, shaft etc!) or precision racewerks

[tomasp001]

Originally Posted by Jeef

my buddy runs around at about 600whp on his auto trans. seems to be fine so far.


get a replacement transmission if it's slipping that bad.


look into nizpro(billet basket, shaft etc!) or precision racewerks

did your friend do anything other than regular tranny maintenance and xHP? and I will look into those! You are a life saver friend!

[iqraceworks]

Originally Posted by Jeef

my buddy runs around at about 600whp on his auto trans. seems to be fine so far.


get a replacement transmission if it's slipping that bad.


look into nizpro(billet basket, shaft etc!) or precision racewerks

From what I've seen online ...you will spend a fortune for the nizpro and precision parts. Just the clutch kit from precision is over $1,000.....and that's not including the labor to pull the guts out of the transmission and rebuild it with those new parts.

Yes....some transmissions seem to hold big power ...some do not. That's why I say have some money set aside if you need it..... hopefully you don't.

Those ZF 6HP21 transmissions are rated at 400ft/lbs of torque ...how much is a 600hp N54 putting out ....600+ ft/lbs?

[NoGuru]

Here is a clutch upgrade for my DCT https://www.kmdtuning.com/Dodson-Mot...roduct_id=6853
$4700 just for the clutch's.

I have seen lots of Auto's holding near 600hp without issues. Just depends on how the car has been maintained and driven.

[ragingpanda]

Once my auto takes a shit on me, I will be swapping to a manual transmission. I'm keeping my car for the long haul.

[tomasp001]

Originally Posted by ragingpanda

Once my auto takes a shit on me, I will be swapping to a manual transmission. I'm keeping my car for the long haul.

At this point.. Im also thinking about this option LOL