And what would you like to know about the GTM Torque converter ?
Ive had one dor almost 2 years now.
it dropped my 60 ft times to 1.85. Very streetable and drives like the stock unit.
I now have a Pro torque with a 3400 stall . 1.80 60 ft times , ok for driving but not the grearist for every day driving.
As for the shifting. My stock tranney shift like a terror with the 4.08 gears. and i run the 1/4 mile in 12.342 seconds all moter. No mods at all to the VB.
I now have the GTM built stage 4 and let me tell you the differnce is night and day.
I have not put the GTM flash into it yet,
Im doing that tonight and Sam told me that it will be way faster shifting when the VB is flashed.
Im sure that my car will run 12.19 with this upgrade and all i have is 304 RWHP.
Sam has been working with me and helps me a lot. He has endless paitiance with me as my computer skill are not that great and he took the time to the other night at 9.00 pm to help me with the uprev set on my PC. for 45 min on the phone.
He had never sent me bad advise as alway helps me when i screw up installing things on my car.
Z

Anyone find out the name of that shop yet?

//

Everyone is getting there nickers in a knott i have the Stillen s/c with a gtm rebuilt auto and new valve body and the gtm upgrade vb i have had the car on the road for 1 month and so far so good a few jumps in the gears when breaking and accellerating in drive but i still need to retune the car and i have not increased the line pressure yet with the new vb feels 10 times better already on how it was

Hopefully and admin can clean up this thread so it can get back to the core issue with out any unsubstantiated claims and stick to the facts.

ok i have been reading this thread and i can tell you that you are the troll here

when i personally ask mechanics/tuners/friends w/experience about certain upgrades and they tell me that they have had/heard/know personally someone with problems, i usually say ok and leave it at that unless its something that really interests me than i will ask why(like one of my mechanic friends told me to keep my car N/A and build it out and after asking him why, i kind of agree with him)

i bet you and most other people are the same way, if you ask about an exhaust and your mechanic tells you dont bother with it, it isnt worth the money/ its a pos/its bad news, im pretty sure you believe him and get on with your day instead of trying to ask him how he came to that conclusion, who told him that, what are the exact problems, ect., ect.

@OP im very interested in this thread, i didnt know you could upgrade AT, well i learned something new from this thread
hope everything goes well

I take what my shop tells me with a grain of salt. Not all shops have experience with our particular vehicles. Mine told me they only ever see SC's make an additional 50whp, but I know they were looking at it when they put them on Honda's. In reality These few are really on trolling each other. No one likes being wrong, and no one likes to be called stupid. Now everyone has to justify their intelligence by name calling and throwing facts they found from the internet with no reputable source or skewed testing.

OP there is enough info here to decide whether to get VBU upgrade. No one here cares about hearsay, just facts, documented results. If none such thing exists, have the balls to try it yourself before bashing. If you do get this upgrade, please inform us! You will help an entire group of Z owners. I post all of my results and findings in hopes other people will find value in my own headaches and rewards. So put your douches away, your moms back home, and cease the child like name calling. Resurrect this thread when we have something meaningful.

My car is s/c and it was about a 7 speed rebuild with forced induction

The shop that I was referring too that is a well known one is Z1 and they said that I didn't need the GTM VBU upgrade as they could do the same with a tune, so my main questioning was what would the "real" benefits of getting the VBU done by itself get me? So hope that perks everyone's curiosity of which shop I was referring too and the reason I'm asking, don't have 2k to go throwing around just to "find out" the hard way.

Sam@GTM, u have a number I can call you at to discuss what benefits the VBU will give me, I have some questions and would like to speak with you.

@3zworld You are welcome to call us here at the shop anytime Monday - Saturday 9am - 6pm PST. Our shop number is (909) 481-4300.

Just to help you guys out on what we do with the valve body and how it is different from the line pressure increase done in UpRev, here is our description from our website: GTM Motorsports*::*AUTOMATIC TRANSMISSION*::*GTM Valvebody Upgrade for 7 speed A/T

We are proud to present the only high performance modified Valve Body Upgrade option for the Nissan/Infiniti RE710E 7 Speed Automatic Transmission.

After many months of development and testing on our own shop G37, we were able to dial in the modifications necessary to increase pressure to specific parts of the transmission to increase the holding power of the 7 speed transmission. Not only does the upgrade increase pressure, it also improves shift quality and response. The 4th to 5th shift now executes significantly faster and the lazy, delayed factory shift is eliminated.

We also perform modifications to every individual circuit to fine tune the oil volume so the applied pressure can be controlled more precisely. Also, the EPC Solenoid is modified to handle higher line pressure. The beauty of this modification is that nice, smooth shift points under low loads in fully automatic mode are left intact for comfortable driving around town, while the character of the transmission changes drastically in manual mode at higher loads for spirited driving.

Unlike TCM reprogramming that raises pressure across the board and ultimately in areas that don't need it, such as downshifting, pressure is only higher when it is called for.

i have the built tranney with the VB upgrade. the difference in the 4th to 5th gear change is 100 times better than the stock 7 AT. Stock time to shift is .680 of a second for this shift. I have not data loged it yet but i can tell you is way faster and crisper.
The harder you push it in MM the faster it shifts ( with authority) Can not wait till the drag strip open next year, the differnce in shift times will put me in to the 12.1's easy.
i normally shift between 7900 to 8100 rpm. I have done one data log run of the 7AT but will not post any shift times as i want to do another data log run to confirm my results. All im going to say is that the shift times were very quick. some as fast as .225 -.240 of a second vs .30 and .31 on my car.

Z

Can I add the GTM Vb upgrade to the stock tranny?

Yes u can

Please, what is the "VIN number" on the description of the VB ?

Soooo how's the tranny working out for you??? I didn't see in all the trolling going on in this thread. I have 17k+ on a FI 7AT...stock and zero problems.

I did. Pm sent to 3zworld & elperuano.

do u have stock tranny? Which FI and how much you pulling?
you might have mentioned it in earlier posts but i didnt go through all the posts.
thanks!:tup:

Great news GMT rebuilt auto and valve body is in feels great and i still haven't tuned the Auto yet. just bumped the boost to 12pounds so it feels at the limit with boost just need to play with the tune get a little more down low will keep everyone posted. A little advice for anyone with a Stillen s/c kit do not misplace your cable to tune your car they wanted to charge more $700 for a new one

What stage and which FI do you have?

He has a stillen SC kit.

Thanks!

Mike@GTM or Sam@GTM, is there a special flash you send with the VBU to reflash the TCM or do you just have the dealership reflash it with the OEM flash ?

Dealer has to reflash if the VB differs from what came in the car. And Mike no longer works for GTM.

k..cool..Thanks!

there is an uprev flash that needs to be done when doing the valvebody upgrade, the dealer flash will only get a valvebody from another car to work in yours, it will not adjust the line pressure for the non oem modifications gtm does to the valvebody

And who would I get the UpRev flash from? Or do I just have my tuner adjust the Osiris tune? Does GTM have to give you the UpRev file ?

Call GTM and ask maybe it is something they can send to your tuner to put into your tune.

For anyone that may need it:

http://www.gtmotorsports.com/Manuals...dy_R_and_R.pdf

I sure hope someone else comes out with options for the 7AT before I need it because there is no way I'm sending them my money!

why?

^ yeah really you don't need them for the tune since it is in the instructions you can have your tuner do it for you instead, so so long as there is a quick turnaround on the valve body it isn't the end of the world.

I have tried to give them my money and I'm thankful they made it hard enough that I'm not playing that game again!

Wow, sorry you have had troubles, I have had nothing but good customer device from them so not seeing what some others are saying..shrugs

Do you get your stuff from them? If so how long did it take?

VBU Sucks! WTH?
 

Ok...I had the VBU from GTM installed and everything good there. Had my tuner adjust my Uprev tune with the tables that Sam @GTM sent to me to have him adjust. So I get it on the road and it seems to shift a little better but not the drastic difference I was expecting. And to top it all off I lost my Syncro-rev (rev matching) completely!!!! WTF is that all about. On the downshift for those of us that are spirited drivers and like to use our paddle shifters since they are there..;) it is supposed to kick up and then down like a normal shift would do on the tac, instead it just slams into the lower gear without the pip up before going down in revs. I now have made a video and sent it to Level10 transmissions because GTM didn't have a clue as to what could be wrong when I had my tuner contact them. So this is extremely frusturating and I'm about to just go back to my OEM VB since the only differences I'm REALLY seeing is that I lost the rev-match on my downshifts and it STILL has a damn lazy shift when you are not getting on it. When you get on it I agree it does shift nicely shifting upwards, but I would like the whole damn experience thank you of driving my boosted car. The VBU may make your trans last longer but if it acts like this it really isn't that much fun honestly..:ughdance: Hopefully the guys from Level10 transmissions will be able to see from the video if they can determine what "may" be the problem. Was going to buy the torque converter and now not so sure I'm even interested anymore, can't seem to get a quality product, and after $1500 when all is said and done I could have done something better with it..:stirthepot:

all you did was the valvebody right? If you go in manual mode does your gear position indicator work right? The only things that should effect the synchro rev are if the gear position sensor is out, or if there is an issue with the speed signals or in uprev flash. Reflashing, resetting the ecu, maybe putting the stock tune back on just to shift it a couple times and see if synchro rev comes back would be a good couple of first steps. the ecu drops line pressure at low loads so it is not going to shift hard under full throttle. you could always have your tuner up the low load parts of the torque map if you want hard shifts all the time but you shouldn't need lightning shifts cruising around town.

Edit: are you getting any codes?

Just checked the fsm and the gear position and shaft speeds sensors are hooked up to the tcm on the valvebody could be that one was not plugged back in or something during the install as well, another thing to check. When you say swap your stock valvebody back in did you buy a core valvebody? you need to reuse your orignal TCM and gear position sensor from the car on the new valvebody to get everything to work so you must have swapped them, double check to make sure everything is hooked up right on the valve body and that you reused the original parts.