![]() |
Originally Posted by wstar In particular, aside from (beginner-mode, imho) tracking my 7AT, I also come from a background of driving a stick (6-speed LS1, in a '99 Trans Am
|
![]() |
|
LinkBack | Thread Tools | Display Modes |
|
![]() |
#1 (permalink) | |
A True Z Fanatic
Join Date: Jun 2011
Location: temple city, ca
Posts: 2,432
Drives: 2011 370z 7AT GM Sp
Rep Power: 32 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]() Quote:
__________________
Works Emotion CR Ultimate - FI CBE w/ 18" resonators - Ecutek - eibach sways - Quaife - FI LTH w/race cats - kw v3 - spl - Topgunz SC - 488whp 398trq |
|
![]() |
![]() |
![]() |
#2 (permalink) | |
A True Z Fanatic
![]() Join Date: Mar 2009
Location: Houston, TX
Posts: 4,024
Drives: too slow
Rep Power: 3595 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]() Quote:
As far as fluid changes go: from a factory service manual perspective, it's supposed to be "maintenance-free" for the consumer. So they don't provide a dipstick for checking the level, or any sort of easy filler tube either. There are procedures for checking fluid level and draining/filling, but the draining and filling is done via drain-fill plugs on the transmission body itself (much like with a manual or a differential). The correct fill level, as with most things of this nature, is when it barely seeps out of the fill hole. However, to get the factory-correct fill amount, you have to check this with the internal temperature of the 7AT in a very specific range. The TCM knows this temperature, but only Dealership tools can read the temperature to know the fill is correct. That's the reason that, generally speaking, only the Dealership can deal with fluid checks/changes. In practice, you should probably get the fluid swapped every ~20K miles for a hard-driven and/or lightly-tracked car, IMHO. The easiest and most reliable way to do it at this time is to have a dealership do it for you. Just make sure they don't just send some random tech to do a "standard" transmission flush. Be sure they've read the 370Z service manual and understand about the filling procedures and checking Consult-III temps, otherwise they're doing no better guesswork than you could in your garage. Supposedly GTM was working out a set of instructions for us to reliably refill without a dealership. They probably developed a guideline based on spot-checking some point on the transmission's outer case with an IR thermometer. Never heard any more details on this though. |
|
![]() |
![]() |
![]() |
#3 (permalink) | ||||
A True Z Fanatic
![]() Join Date: Mar 2009
Location: Houston, TX
Posts: 4,024
Drives: too slow
Rep Power: 3595 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]() Quote:
Quote:
Quote:
It does need to warm up a bit if it's cold out and/or the car is overnight cold before it shifts optimally. And it does need an additional cooler for serious track use. Quote:
|
||||
![]() |
![]() |
![]() |
#5 (permalink) |
A True Z Fanatic
Join Date: Dec 2010
Location: L.I., NY
Posts: 5,307
Drives: Everything
Rep Power: 26 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]()
Don't keep it and D and wait for the car to downshift for you, there are paddles there for a reason.
__________________
|2013 Audi S4|Ibis White/Black|S-Tronic P+| |2013 370z|PearlWhite/Persimmon|Touring/Sport/Nav|F.I. CBE 18" CF| |Sold|2011 370z|Gun Metallic|Touring/Sport/Nav| |
![]() |
![]() |
![]() |
#6 (permalink) |
A True Z Fanatic
![]() Join Date: Mar 2009
Location: Houston, TX
Posts: 4,024
Drives: too slow
Rep Power: 3595 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]()
Re: Osiris tweaks to the 7AT Torque Map: IMHO you should really only do that to adjust for engine torque, and even then on NA we're talking +10-15% over stock values at most. The guideline is to monitor slip under what should be lockup conditions (slip meaning RPMs vs wheel speed isn't stable), and tune the torque values just high enough to reliably kill slip.
When you set them massively higher than they need to be, it does exactly as you describe: every time you click the button it slams everything and kicks you in the butt. You're just causing excess wear all over your drivetrain, and more importantly for track stuff, you're upsetting the balance of the car. The last thing you want while upshifting out of a corner and still pushing to the side a bit is to suddenly shock the drivetrain and rear wheels. It may feel "faster", but the quick, smooth engage at a lower torque map value is better. |
![]() |
![]() |
![]() |
#7 (permalink) | |
Base Member
![]() Join Date: Sep 2011
Location: Discovery Bay
Posts: 234
Drives: 16 370Z Sport Wht S7
Rep Power: 6725 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]() Quote:
![]() Last edited by Mecinoid; 12-08-2011 at 01:24 AM. |
|
![]() |
![]() |
![]() |
#8 (permalink) | |
A True Z Fanatic
Join Date: May 2010
Location: nirvana
Posts: 6,394
Drives: 2023 NATM
Rep Power: 419 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]() Quote:
That said, I imagine a slightly lower setting would be a good compromise for optimal straight line driving and cornering. Feels good to me as is -- but it's definitely something that would have to be experimented with by anyone tracking the car to get it just right. I think for a road car you can have it set be a bit more aggressively safely. Also, the faster shifts should put less wear on the clutch bands, while only marginally increasing shock to hard parts. Overall, you probably break about even in overall wear and tear.
__________________
Enjoy it. Destroy it. Last edited by Jordo!; 12-08-2011 at 04:51 AM. |
|
![]() |
![]() |
![]() |
#9 (permalink) |
A True Z Fanatic
![]() Join Date: Mar 2009
Location: Houston, TX
Posts: 4,024
Drives: too slow
Rep Power: 3595 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]()
Re: throttle tuning, see here: Smooth Throttle for UpRev
|
![]() |
![]() |
![]() |
#10 (permalink) |
Base Member
![]() Join Date: Sep 2011
Location: Discovery Bay
Posts: 234
Drives: 16 370Z Sport Wht S7
Rep Power: 6725 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]()
Here's the thing you guys are missing... see bold:
The 370Z’s 7-speed automatic with Downshift Rev Matching (DRM) and Adaptive Shift Control (ASC) is designed to offer quick, manual-like shifting when operated in manual mode with a target time of 0.5 seconds between shifts. Drivers can use the standard paddle shifters or the shift lever. With optimized torque converter lock-up logic, the 7-speed automatic feels very direct, like a manual transmission. The 7-speed’s wide gear ratios offer improved fuel efficiency (versus a 5-speed automatic), while the Adaptive Shift Control is designed to adjust to the driver’s driving style. You have to drive the car in the mode you want it to perform in for a while. Then, it shifts like you wouldn't believe. I'm sold on the S7 tranny. Even double downshifts come easily if you know what speed you can do them at. No over reving here. Remember it's a little different for a six speed because it shifts very fast through the gears at bottom end to get you going. If you tromp on it and hold it to 7K then shift it shoot you out of the slot like no other. I am truly impressed and I have driven only stick shifts in my sports cars to this point. Back in 2004 I tried the auto in a Z and G and it was way sluggish. This is a completely different beast. Give it time to adapt to your driving style, then let me know what you think. It takes about 20-30mins to adapt as far as I can tell. That is driving through tight twisties.... Then it is a completely different car. 10 mins back in auto mode the car drives like your mom's car. I'm loving the S7 more and more each day. I always win the stop light battle to the freeway on ramp... By the time I hit the on ramp they are just a spec in my mirror and I have to start looking for the officer because I'm going way too fast. I have to be careful or this car is going to get me a lot of tickets. It's just too fun to rev to 7K so that I can feel that hard shift into second. At that point, I'm over 60mph and in trouble already... Enjoy the ride !!! AJ on his seventh Z car now. Last edited by Mecinoid; 12-08-2011 at 01:15 AM. |
![]() |
![]() |
![]() |
#11 (permalink) | |
A True Z Fanatic
Join Date: Jun 2010
Location: SWMO
Posts: 4,454
Drives: 2019 CX5 GT Reserve
Rep Power: 7627 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]() Quote:
Also read about temp above your post, sounds like it won't matter one bit to me. I won't overheating it. I'm kindof torn, but the reason is all the bad I hear about the manuals vs. The disconnect I have always felt with automatics. I'm still in the manual camp, but if they find the car I want except in auto, ill be stressing. |
|
![]() |
![]() |
![]() |
#12 (permalink) | |
A True Z Fanatic
Join Date: Jul 2009
Location: ny'r livn in tx
Posts: 8,687
Drives: well over 130m.p.h.
Rep Power: 14858 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
![]() Quote:
1. The ability to burnout 2. Exhaust note is less aggressive than the manual/very mild torque converter drone. But nothing close to how bad other autos have it. 3. If you are really used to the clutch, you will feel like you need something to step on with your left leg at first. I have driven every shifting auto out there in the Z's price range and above. Nothing feels like it except the DCT's out there. I'm not telling you to buy the auto. And I'm not going to say the auto is better than a manual. But I will say this. It will be a long time till another car brand will be able to duplicate this level of performance from a slushbox. When people are in my car and I'm shifting. They think its a manual transmission. Power delivery from the auto is that direct. I will take the pepsi challenge on power delivery with the 7at. Its just that impressive. Obviously there will be advantages to a manual on a few levels. Turbos bigger than stage 2. Drifting is easier. The art of heal and toe when SRM is off. But the 7 at provides so much diversity in its programming. I thing it makes it easy to transition from manual to auto. ![]() |
|
![]() |
![]() |
![]() |
#13 (permalink) |
A True Z Fanatic
Join Date: Jan 2011
Location: Fort Bliss, TX
Age: 41
Posts: 1,440
Drives: 2011 GM 370 base SP
Rep Power: 17 ![]() ![]() ![]() ![]() ![]() ![]() |
![]()
Here is another reason to get a manual
![]()
__________________
Srenity: "Yeah no rest needed to spread the love when your 20 that's for sure...." |
![]() |
![]() |
![]() |
#14 (permalink) |
Enthusiast Member
Join Date: Aug 2010
Location: South Orange County, CA
Posts: 422
Drives: 2010 370Z Silver A7
Rep Power: 15 ![]() |
![]()
Took a two hour mountain drive with my 7AT yesterday:
I was smoother and more accurate with the steering-two hands on the wheel. I was able to concentrate on the next corner better. No missed shifts. Effortless up and down shifts in mid corner. Down shifts don't upset the car in mid corner. I was a faster and probably safer driver due to fewer distractions. Other bonuses: Easier in traffic. Better gas mileage. Quicker. More gears to choose from. Quicker down shifts than a manual if traffic surprises you and you need power right now- stomp on it and go. Better trade-in. The shifts are faster than you think. Negatives: It's direct but not as direct as a manual. The manual involves you more. Manual is more "raw". A manual is cheaper to buy. I've always preferred manuals but an occasional issue with my left leg made me give the 7AT a look. From time to time I wish I had a manual but I keep finding more ways to exploit the advantages of the 7AT so I'm happy with my choice. Get what YOU want. |
![]() |
![]() |
![]() |
Bookmarks |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Transmission problem (?) after a transmission fluid change | EWarren | Engine & Drivetrain | 7 | 07-28-2014 11:44 AM |
Commit, Dammit! | LunaZ | Nissan 370Z General Discussions | 10 | 03-06-2011 09:06 PM |
Rip off Artist - how to commit internet suicide 101 | 370zdub | The Lounge (Off Topic) | 6 | 02-03-2011 03:43 PM |
I seriously dare you to find someone better | blue660r01 | Sports | 9 | 07-29-2010 11:52 PM |
Another transmission. | Solus | Engine & Drivetrain | 28 | 10-27-2009 05:14 PM |