Infiniti FX Forum banner

1 - 20 of 104 Posts

·
Registered
Joined
·
3,948 Posts
Discussion Starter #1
Well, I finally got off my butt and went out and did it and I like very much what I got!

First, as a refresher, some comparison numbers from a few other members that made some runs with the G-Tech Pro (all FX35 owners):

ujmot: 7.2 sec avg. over four runs

e39ng: 6.82 sec single run

WeGaFX: 6.56 sec single run (slight downhill grade, though)

I believe all of their vehicles are bone stock; please correct me if I'm wrong.

-------------------------------------------------------------------------------------

OK, test conditions: freakin' awesome (for TX)

Temp: 72 deg
Relative Humidity: 60%
Elevation: sea level
Wind: calm
Road surface: very flat 1/2 mile stretch of blacktop

Vehicle condition: ('03 FX35 RWD, 10,500 miles)

-VDC off (don't think it mattered; I never had any wheel slippage)
-climate control off
-gas: 1/4 tank
-nothing in the car other than my 168lb self
-spare tire and tools intact (that's cheating)
-car driven around for about 20 min before hand to get everything warmed up.

My mods:
-Stillen High Flow intake
-Z tube
-Crawford plenum
-7 wire grounding kit
-8+ fresh coats of Zaino (sure to lower the COD a point or two :wink: )

-------------------------------------------------------------------------------------

Ok, here goes. I made a total of six runs, all on the same stretch of raod, all going the same direction. I had seen some people before state that the best way to launch was to hold the brake, rev to about 2k and let her rip. This proved to be wrong. I got my best times by simply standing on it from a standstill with no pre-loading whatsoever. I also got the best times in manual mode, though auto is pretty quick as well. The gearing is great; you easily pass 60mph in second gear (the 6MT G and Z hit the rev limiter right around 60), so only one shift is required and you don't have to worry about the limiter clipping you around 60mph. I did a total of six runs, only two of which were using the proper launch technique (took me a while to figure it out); so here we go:

-Run #1: manual mode, launch @ 2k rpm - 6.58 sec
-Run #2: same method - 6.61 sec
-Run #3: Same method - 6.68 sec (was getting a little nervous)
-Run #4: Auto mode, launch @ 2k rpm - 6.72 sec (yuk!)

At this point I was about to quit, so I drove back toward home and calmed my nerves a bit and decided I should give it a shot without pre-loading the tranny just to see what happened. Boy am I glad I did!

-Run #5: Auto mode, no pre-load; Just released the brake and stood on it simultaneously from idle - 6.55 sec (Oooo... )

-Run #6: Manual mode, same as above - Drum roll please...........

6.37 sec :shock:

Oddly enough, I didn't think I did that well on that run, as I think I shifted a tiny bit late into second, as I felt a tiny hesitation as if I just barely clipped the rev limiter. Boy, was I pleasantly surprised when the number came up! I should be able to squeeze a bit more out of her now that I know what I'm doing and if I nail the shift (this was the first time ever I set out to do something like this), but I'm quite happy at this point!

-
-
-
-
-
-
-
-
-
-

Oh, yeah: EAT THAT, KENNY! :wink:
Not too shabby for a lowly '35 with less than $1k in mods, huh? Slap on a UR crank pully and maybe some high flow cats and I should be eatin' '45s for breakfast! :twisted:
 

·
Registered
Joined
·
882 Posts
Thats not too shabby!
 

·
Premium Member
Joined
·
2,609 Posts
Awesome MGFR! Thanks for the report. So how were you timing when to manual shift to second? I mean, considering the delay/lag, were you doing it by feel or watching the RPM (and if the RPM, when did you send the shift command)? Also, why do you think your times were getting worse in the begining - shift timing error?
 

·
Registered
Joined
·
1,846 Posts
WOW AWESOME!!

Yes, mine is bone stock, just turned 3300miles with about 70 lbs of xtra cargo.

I definitely need to do my runs again. My nerves were also on the edge as I was doing these runs past midnight in a very quiet neighborhood. Weird thing was the fastest run (under 7.2) came from just a partial throttle from dead stop into a WOT just past 2000rpm. :?:
 

·
Registered
Joined
·
1,846 Posts
Re: Finally got some 0-60 G-Tech Pro numbers! ME LIKE!!!

MustGoFastR said:
Not too shabby for a lowly '35 with less than $1k in mods, huh? Slap on a UR crank pully and maybe some high flow cats and I should be eatin' '45s for breakfast! :twisted:
Your RWD certainly have the weight AND less drivetrain loss advantage. A couple more bolt on mods and it's very possible.
 

·
Registered
Joined
·
3,948 Posts
Discussion Starter #7
particlefx said:
Awesome MGFR! Thanks for the report. So how were you timing when to manual shift to second? I mean, considering the delay/lag, were you doing it by feel or watching the RPM (and if the RPM, when did you send the shift command)? Also, why do you think your times were getting worse in the begining - shift timing error?
I was watching the tach to know when to shift and sent the shift command at 6500rpm. As I said I think I was a hair late on that last run, though, so it could have potentially been even better. I think I was just a little jumpy after the first run and started to think too much, which accounted for the progressively slower times in runs 2, 3 and 4. I collected myself a bit and reviewed what I had done before runs 5 and 6. If the conditons are good, I'm going to go out again tomorrow.

HOWEVER, lets review the main point here: The AWD FX35 is a 7.2 0-60 car. The RWD is 200lbs lighter (1/10th sec per 100lbs) and therefore a 7 sec 0-60 car stock (maybe slightly less, to account for less drivetrain loss as well). I shaved off 6 tenths with just a few simple intake mods! There are a lot more mods out there; just imagine what this baby is capable of!
 

·
Registered
Joined
·
3,948 Posts
Discussion Starter #8
ujmot said:
Weird thing was the fastest run (under 7.2) came from just a partial throttle from dead stop into a WOT just past 2000rpm. :?:
Interesting. I'll definitely play around a bit more with my launch technique and see what works the best.
 

·
Registered
Joined
·
176 Posts
You should try power-braking at higher than 2K RPMs. Unless you can get *some* wheel spin, you haven't gotten into the "fat" part of the torque curve. I guess this puts the FX35 RWD vs. AWD debate to rest. Or at least until someone's making 500 H.P.
 

·
Registered
Joined
·
1,846 Posts
dinofx35 said:
I guess this puts the FX35 RWD vs. AWD debate to rest.
Never argued that... Unless it was a race on slick roads. ;)
 

·
Registered
Joined
·
882 Posts
I just realized, Acura TL-S 0-60 time is ~6.8
Dam, with intake and plenum we can go up against
TL-s..hahahahaha

Torque braking is horrible for your car!!!!
Bunch of Tl guys have done that at the track and all have said it did not improve their times by that much. Not worth trashing your car.


BTW, does the FX35 AWD count as a rear wheel drive until you hit snow mode? I've heard that the AWD is not a full time AWD
 

·
Registered
Joined
·
3,948 Posts
Discussion Starter #12
dinofx35 said:
You should try power-braking at higher than 2K RPMs. Unless you can get *some* wheel spin, you haven't gotten into the "fat" part of the torque curve.
Possibly. I don't think anybody has achieved wheelspin in the FX; we got lots 'o traction. Plus, ANY wheelspin is wasted power and detrimental to your time. I get where you're coming from though; explore the limits and launch just before the point where you will be spinning the wheels. I persoanlly feel power-braking to achive the best time is cheating a bit as well (even though most magazines do it), not to mention abusive to the car. You'll notice I left in the spare and tools as well. I'd rather stick to real world street numbers.
 

·
Registered
Joined
·
3,948 Posts
Discussion Starter #13
mushutofu said:
BTW, does the FX35 AWD count as a rear wheel drive until you hit snow mode? I've heard that the AWD is not a full time AWD
The AWD starts of from a standstill driving all wheels, than gradually shifts the power to the rear wheels as you come up to speed. So, no, it is not AWD full time, but always launches in AWD.
 

·
Registered
Joined
·
3,948 Posts
Discussion Starter #15
mushutofu said:
Torque braking is horrible for your car!!!!
Bunch of Tl guys have done that at the track and all have said it did not improve their times by that much. Not worth trashing your car.
Agree with you there. I only reved to 2k and immediately let off the brake (held it with my left foot) when I hit that rpm and only did it four times with about 5 min between runs, so I don't think I hurt anything. I had MUCH better results just flooring it from idle, anyway, so I plan on sticking to that from now on, though I my experiment with hoe much throttle I give it as the RPMs rise, as ujmot suggested.
 

·
Registered
Joined
·
3,948 Posts
Discussion Starter #16
particlefx said:
I'd rather stick to real world street numbers.
Then maybe you should test at 1/2 tank of fuel, AC/heater on, groceries in the back, and a big gulp in the cup holder. j/k :wink:
OK, maybe not THAT real world... I could have pulled out the spare, tools, sub, rear seat bottom, all the headrests, taken the manuals out of the glove box, my CD holders out of the door and the stuff I have in the center console, but I'm not likely to do all that before facing off with someone at a stoplight, nor burn my tranny. I always, however switch the A/C off when I race someone; that's just common sense. All I meant was that I'm after optimum results without stripping down the car or being abusive to it. :D
 

·
Registered
Joined
·
3,948 Posts
Discussion Starter #18
particlefx said:
I was joking of course.
I know.

BTW, you estimate about 1/10th second penalty per 100 lbs. right? That makes me wonder how much the OEM hitch weighs?
Haven't loked at the OEM hitch up close. I wouldn't think it would weigh more than 40 lbs or so, though.
 

·
Registered
Joined
·
3,159 Posts
Re: Finally got some 0-60 G-Tech Pro numbers! ME LIKE!!!

MustGoFastR said:
Oh, yeah: EAT THAT, KENNY! :wink:
Considering I've coughed up every '35 (and some '45s) that have dared to question mah awthoritay, sure, I'll eat your '35, too!
 

·
Registered
Joined
·
3,948 Posts
Discussion Starter #20
Re: Finally got some 0-60 G-Tech Pro numbers! ME LIKE!!!

kcrudup said:
MustGoFastR said:
Oh, yeah: EAT THAT, KENNY! :wink:
Considering I've coughed up every '35 (and some '45s) that have dared to question mah awthoritay, sure, I'll eat your '35, too!
Too bad we don't live closer to each other; I'd love to give you a run, bud! 8)
 
1 - 20 of 104 Posts
Top