nighthawk350z

i'm sure this question has been asked many times but i dont wanna get flamed.. even a one sentence reply would b fine.. so here it is.... how much faster is the 6MT than the 5A? the 5A is supposed to shift pretty fast, but how much 1/4 mile time does it sacrifice to get the automatic tranny convenience? any owners out there with a 5A that has driven in a 6Mt? how big of a difference is there? thanks everyone

gq35

Don't have times to quote you, suffice to say if the 6mt driver knows how to shift properly, you will be a good 3 car lengths behind him/her by the time you hit ~100miles/hr which would be very close to the 1/4 mile point (probably a little over 1/4 mile).

themyst

iTrader: (1)

the difference is not as much as you think. 6MT quarter mile times are close to 14.2 on a good day... I've heard of stock 5ATs hit 14.4 using MM. 5AT's in auto mode will push 14.5 - 14.6 on a good day.

Average 6MT speeds = 14.3 - 14.4
Average 5AT speeds in MM = 14.4 - 14.5

Could very well be a drivers race though.

nighthawk350z

thanks every1

gq35

Hmm. That is surprising to me that 5AT even in MM could be so close to the 6MT times. But you may be right. Both tranys are superb. I am comparing what I have experienced with my 6MT with mods (at the time; Crawford Plenum; Intake; Exhaust; Pulleys; Grounding Wires; including ECU upgrade with 7100 redline) to that of a 5AT with at least an intake and and exhaust system. However, just like you pointed out, I really do think it boils down to the driving as I could also tell you that I have blown it more times than I care to recall shifting from 2nd to 3rd and just paid for it!!

EmpiricalGMan

The AT is unusually close to the MT, about .3 seconds difference in the 1/4 mile, assuming you torque-brake a bit and know the AT's manual shift points. The AT needs a couple extra thousand miles of break-in than the MT though before it hits its stride though, it's probably .5 or .6 seconds slower straight off the lot.

For what it's worth, I've personally run a 14.055 in an AT with a Borla exhaust as the only mod, but that comes with the disclaimer that it was 32 degrees out at the time (nature's own performance mod). If you're only concerned about straight line acceleration, the AT is definitely competitive. In twisties, however, you'd need alot of practice over the same stretch of road to figure out when to shift, because it doesn't shift quickly enough to wait until you instinctually feel the need to shift. You need to be a second ahead in the turn intellectually. That's its biggest drawback, performance wise. Plus it's just not as fun.

Scrapin 240

if there is an opportunity to get stick, GET STICK. just my .02

bg35coupe

i ran 15.00 at LACR but other g35 5AT ran 15.4 with some mods
my coupe is stock !

themyst

iTrader: (1)

15.4? That's pretty bad. Are you guys living in Denver or somewhere with high elevation?

moog

iTrader: (14)

I ran a 14.6 @ 97 at the track w/ a 30mph crosswind in my 5AT.

o snap its eric

iTrader: (5)

i got a 15 flat =( Jk im too scared to track my car because i dont want to get a crappy time and everyone laugh at me.

WhiteStallion

Bone stock at our little crappy track i hit 14.4 @ 97mph

Not to shabby, that was shifting myself, leaving it in auto netted me constant 14.6's@95!!! I was very sad at the loss of 2mph in normal auto mode.

JonsilvZ

Hmm I didnt know my auto Z is that much quicker then a G35 coupe auto. Yeah manual mode is .2 sec quicker then full auto. Recently i raced a 6sp Z with CAI. He had the 1st jump(half car). We stayed there 100+! He was really good with the shifts.

deanG35c6

Does the auto tranny allow you hit redline? Alot of this depends on the drivers? A skilled 6mt driver can knock off shifts pretty quickly and even get a respectible chirp in third gear. Watch the Best Motoring videos to see what kind of shifting I'm talking about.

vegaseric

I think this is an excellent point. If you like driving twisties, get the 6MT. I have never experienced an automatic in MM that shifted anywhere close to when I wanted it to shift. But if you are concerned about straight-line performance and want consistent, repeatable quarter-mile runs, get the automatic.

JonsilvZ

My manual mode goes 6900rpm. 6600 is redline.I was wondering if the auto Gcoupes in manual mode does this?

gq35

That is very interesting .. JonsilvZ .... a real head scratcher for me.
The redline is 6500 and with the factory ECU, you will hit the cut-off before hitting 6900 rpm. Even before you hit 6500 redline, the butterfly in the throttle-body starts to shut and by the time you hit 6500 it is lights out for real ... unless you have the ECU flashed (My red line is 7100 now and the butterfly stays open to the 7100 redline). I am wondering if the ECU redline in MM mode is truly set at 6900 instead of 6500 ... and if that is true, then the butterfly shut-down may also have been delayed to accomodate the driver's command. If someone finds this out, I sure like to know too. -- GQ35 with a 6mt.

uheenada

i just tested mine while racing with my friend and i redlined 1st gear and rev limiter kicked in around 6800rpm i couldn't tell exact number bcuz it happended so quickly... is this normal?? is it rev limiter suppose to kick in right after redline?