Vq35hr-tt
12-15-2008, 04:53 PM
#31
I understand VDC works with the set-up, that was my point i was trying to make. The only way to get smooth acceleration or not just burn your tires off is with VDC. When it was suggested this set-up would run low 11's, I said no way. VDC in conjunction with TCS automatically adjusts brake pressure and engine TQ, which will not allow the car to make 1/4 runs as quickly as they could with VDC off, and a set of slicks for traction. Now with the set-up I just mentioned, I don't think the car ever would handle the HP and TQ increase. The drive train just couldn't do it. The whole point I was trying to make was that this set-up is super sick, but if you are trying to build a G that can go low 11's, you need a lot more then this package.
12-15-2008, 04:57 PM
#32
Hey terry, In my experience, the VB swap made daily driving a lot less comfortable, with shifts being way less smooth, and more hard, kinda just slamming you into gears when you were driving normal, and especially bad in city driving and coming to a stop. I asked GTM about this, because with a 5AT, this mod is a must if you go FI, and they said yes, it would indeed be an uncomfortable ride for normal daily/city drives. In your opinion, is it that bad? How is it on a normal city commute, and how are the downshifts when slowing down for a red light or something?
12-15-2008, 09:06 PM
#33
The VB upgrade doesn't affect daily driving at all; the pressure in the lines arn't high enough when you arn't flooring it to slam shifts.
The VDC/TCS is adaptive; I'm not sure if it's adaptive enough to adapt to DRs, but they certainly do adapt rather remarkably to lower-performance-than-OEM tires quite well, so it may do well with higher performance tires as well.
Every modded AT car I drive just reinforces more and more that my decision to get an AT G was the right decision; almost all the other cars I have owned have been MT.
The VDC/TCS is adaptive; I'm not sure if it's adaptive enough to adapt to DRs, but they certainly do adapt rather remarkably to lower-performance-than-OEM tires quite well, so it may do well with higher performance tires as well.
Every modded AT car I drive just reinforces more and more that my decision to get an AT G was the right decision; almost all the other cars I have owned have been MT.
12-15-2008, 09:15 PM
#34
i dunno, in my experience, when I swapped VB's to a performance oriented one that can handle increased power it greatly changed driving comfort. I just dont understand why GTM would tell me the VB upgrade I would need with the kit will indeed change driving comfort, when you say it doesn't at all 
12-16-2008, 10:08 AM
#38
Hey terry, In my experience, the VB swap made daily driving a lot less comfortable, with shifts being way less smooth, and more hard, kinda just slamming you into gears when you were driving normal, and especially bad in city driving and coming to a stop. I asked GTM about this, because with a 5AT, this mod is a must if you go FI, and they said yes, it would indeed be an uncomfortable ride for normal daily/city drives. In your opinion, is it that bad? How is it on a normal city commute, and how are the downshifts when slowing down for a red light or something?
I have noticed on one occasion that in the M mode, the 2-1 shift happened kind of early making for a rough downshift. In this mode, I usually let the car shift down by itself, but I have to experiment with it more to see if I can get it to happen again.
I've also noticed that in D mode and driving slow, the transmission shifts earlier than I like. Driving around town feels smoother to me in DS mode.
There is a BIG difference when the RPM revs up and the transmission line pressure increases .... the shift are remarkably faster. The best way to describe it is like making a high RPM shift in an MT and popping the clutch.
Last edited by terrycs; 12-16-2008 at 10:12 AM.
12-16-2008, 10:14 AM
#39
i dunno, in my experience, when I swapped VB's to a performance oriented one that can handle increased power it greatly changed driving comfort. I just dont understand why GTM would tell me the VB upgrade I would need with the kit will indeed change driving comfort, when you say it doesn't at all
12-16-2008, 10:22 AM
#40
Dude what
11's maybe less?? really??
The GTR is quoted at 483HP, and has a sophisticated all-wheel drive system and launch control and runs about an 11.7 1/4 mile.
IMO, Theres no way a car like this, running this set-up could ever break lower without A) more modifications, or B) busting major components trying to reach those times.
You can see in the vid that traction is just damn near impossible. With VDC on, 1/4 times would be reduced. If you add slicks or DR, the drive train wouldn't hold up. The tranny isn't even built to handle that load in a racing environment. Adding a tranny cooler and valve body isn't sifficient if you are trying to race the car. You need internals, and more mods to the drivetrain. Don't get me wrong, this kit is sick, the car is sick, and the speed is insane, but a GTR is built to race, has launch control and all-wheel drive. When taking a car that was built to drive from point A to point B safely, quickly, and reliably, then doubling it's HP, you must change all aspects to make it reliable on the track. I'm talking tranny, suspension, rear end etc.. This is just an insane, roided daily driver. This car can't beat the GTR without additional mods, or expensive fixes do to beating the crap outta it. Thats my .02.
I personally saw a mustang cobra with mods and added boost try 1 run at a track with slicks, when the slicks caught, and the TQ/HP hit, he left his rear end all over the track. People don't understand that gains like that effect ALL aspects of the car, especially if you are racing.
11's maybe less?? really??
The GTR is quoted at 483HP, and has a sophisticated all-wheel drive system and launch control and runs about an 11.7 1/4 mile.
IMO, Theres no way a car like this, running this set-up could ever break lower without A) more modifications, or B) busting major components trying to reach those times.
You can see in the vid that traction is just damn near impossible. With VDC on, 1/4 times would be reduced. If you add slicks or DR, the drive train wouldn't hold up. The tranny isn't even built to handle that load in a racing environment. Adding a tranny cooler and valve body isn't sifficient if you are trying to race the car. You need internals, and more mods to the drivetrain. Don't get me wrong, this kit is sick, the car is sick, and the speed is insane, but a GTR is built to race, has launch control and all-wheel drive. When taking a car that was built to drive from point A to point B safely, quickly, and reliably, then doubling it's HP, you must change all aspects to make it reliable on the track. I'm talking tranny, suspension, rear end etc.. This is just an insane, roided daily driver. This car can't beat the GTR without additional mods, or expensive fixes do to beating the crap outta it. Thats my .02.
I personally saw a mustang cobra with mods and added boost try 1 run at a track with slicks, when the slicks caught, and the TQ/HP hit, he left his rear end all over the track. People don't understand that gains like that effect ALL aspects of the car, especially if you are racing.
Fact of the matter is any car that is being drag raced all the time will show accelerated drive train wear and tear. All we can do to mitigate this is build up the drive train. But for the hard core guys, there is no difference in cost preventing failure vs fix the failure when it happens. For poor guys like me, we minimize drag racing.
Last edited by terrycs; 12-16-2008 at 10:24 AM.
12-16-2008, 01:27 PM
#42
Registered User
iTrader: (1)
Join Date: Apr 2006
Location: jacksonville, fl
Posts: 4,563
Likes: 0
Received 0 Likes
on
0 Posts
awesome info guys. ive really been looking forward to see your car running well terry. especially with the auto tranny. im looking forward to my 7at and its nice to hear saving up for a tt is well worth it.
oh and for the guys with the gt-r comparison (i love the car) but its only a mid-12 second car without the launch control. stock block f/i vq cars can do that.
oh and for the guys with the gt-r comparison (i love the car) but its only a mid-12 second car without the launch control. stock block f/i vq cars can do that.
04-10-2010, 02:45 AM
#45
Posted per Gamedog's request.
I had the opportunity to drive TerryCS's car about half an hour ago.
[TEASER]
I can sum it up in 1 word.
OMGWTFBBQ.
This is unlike any turbo car I've driven before. I've been in 600whp Supras, 500whp STIs, 480whp S2000, reflashed 335s, vipers, z06s, etc. I knew it wouldn't be the typical lag lag lag lag lag lag WOOOOAH feeling of a typical low compression high boost car. Realistically, I was expecting it to feel close to the turboed s2k. Smooth power, with a small surge of power as the turbos spooled.
Boy, was I wrong.
It felt... stock. I drove around normal. It felt stock.
It didn't even feel or sound like a fast car. Then I floored it. Other than really crisp shifts, the car felt.... stock. There was no increase in power. Okay, cool. Maybe the boost is off. At least the car looks and sounds cool. 
Then it dawned on me. This car is going through gears faster than the 7AT does. I'd been used to faster gears since the 7AT gearing is rather agressive on the first two, but this was different.
I went again. Redline first. Redline second. My eyes were pinned on the speedo; it was moving at the pace a stock G would be going from 40-60 in second gear. Except I was in third.
70, 80, 90, 100. 110. 
No Fvcking way. I'm in 4th gear, and the acceleration STILL isn't decreasing.
Then Terry tells me "You gotta do it with VDC off. It's way faster. Oh, and it's on the lowest boost setting."
[/TEASER]
Impressions.
The car is incredible. I've driven high boost cars. This does NOT feel like one. It retains every bit of power a stock G has. The turbo spool is SO smooth and fast that... I really have no idea when it spools. I was paying attention to specifically try to see when it spools, but without looking at readouts, I wouldn't be able to tell. It's power on demand. The 335 has minimal lag. This has NO lag. Remember, even NA, this motor's power rivals that of the 335 under boost. A NA 335 has less power than a 328.
The tranny shifts like stock. Normal driving? Normal shifting. Normal driving in DS? Normal DS shifting. WOT? The thing shifts like you're powershifting a MT. Except it's built to do that, and its a HECK of a lot smoother. DSG/SMG/SST has nothing on this slushbox. Hell, you can't even call it a slushbox anymore.
Infiniti, you need to be listening. A TT VQ37HR is in order from the factory.
I want a G37TT. I'll be first in line to buy one.
Oh, and even though I know 9psi is faster than 5, I couldn't FEEL a difference. It's that smooth.
Hell, if I didn't see the FMIC and didn't know it was boosted, I'd think this was just another G sedan with an exhaust.
Videos to come later.
I'm off at 9 and I don't have a card reader on me.
Terry
VIDEOS:
First try...
This run was shut down to to excessive wheelspin.
5 PSI.
Attempt #4.
After... like 8 tries, success!
1st Gear: me feathering the throttle; I'm fighting to keep traction, and I'm not an experienced drag racer, but I'm staying around 60% or so.
2nd gear: about 80-85% throttle
3rd gear is when I get to finally open it up 100%
Oh, and still 5 PSI.
This car is tuned for up to ~9 psi boost....
I had the opportunity to drive TerryCS's car about half an hour ago.
[TEASER]
I can sum it up in 1 word.
OMGWTFBBQ.
This is unlike any turbo car I've driven before. I've been in 600whp Supras, 500whp STIs, 480whp S2000, reflashed 335s, vipers, z06s, etc. I knew it wouldn't be the typical lag lag lag lag lag lag WOOOOAH feeling of a typical low compression high boost car. Realistically, I was expecting it to feel close to the turboed s2k. Smooth power, with a small surge of power as the turbos spooled.
Boy, was I wrong.
It felt... stock. I drove around normal. It felt stock.
It didn't even feel or sound like a fast car. Then I floored it. Other than really crisp shifts, the car felt.... stock. There was no increase in power. Okay, cool. Maybe the boost is off. At least the car looks and sounds cool. Then it dawned on me. This car is going through gears faster than the 7AT does. I'd been used to faster gears since the 7AT gearing is rather agressive on the first two, but this was different.
I went again. Redline first. Redline second. My eyes were pinned on the speedo; it was moving at the pace a stock G would be going from 40-60 in second gear. Except I was in third.
70, 80, 90, 100. 110. No Fvcking way. I'm in 4th gear, and the acceleration STILL isn't decreasing.Then Terry tells me "You gotta do it with VDC off. It's way faster. Oh, and it's on the lowest boost setting."
[/TEASER]
Impressions.
The car is incredible. I've driven high boost cars. This does NOT feel like one. It retains every bit of power a stock G has. The turbo spool is SO smooth and fast that... I really have no idea when it spools. I was paying attention to specifically try to see when it spools, but without looking at readouts, I wouldn't be able to tell. It's power on demand. The 335 has minimal lag. This has NO lag. Remember, even NA, this motor's power rivals that of the 335 under boost. A NA 335 has less power than a 328.
The tranny shifts like stock. Normal driving? Normal shifting. Normal driving in DS? Normal DS shifting. WOT? The thing shifts like you're powershifting a MT. Except it's built to do that, and its a HECK of a lot smoother. DSG/SMG/SST has nothing on this slushbox. Hell, you can't even call it a slushbox anymore.
Infiniti, you need to be listening. A TT VQ37HR is in order from the factory.
I want a G37TT. I'll be first in line to buy one.
Oh, and even though I know 9psi is faster than 5, I couldn't FEEL a difference. It's that smooth.
Hell, if I didn't see the FMIC and didn't know it was boosted, I'd think this was just another G sedan with an exhaust.
Videos to come later.
I'm off at 9 and I don't have a card reader on me. TerryVIDEOS:
First try...
This run was shut down to to excessive wheelspin.
5 PSI.
Attempt #4.
After... like 8 tries, success!
1st Gear: me feathering the throttle; I'm fighting to keep traction, and I'm not an experienced drag racer, but I'm staying around 60% or so.
2nd gear: about 80-85% throttle
3rd gear is when I get to finally open it up 100%
Oh, and still 5 PSI.
This car is tuned for up to ~9 psi boost....
Sam
Last edited by Sam@GTM; 04-10-2010 at 04:20 AM.