FI with continous high speed driving 130MPH+

FPenvy · 12-05-2012, 08:36 PM

Quote:

Originally Posted by conmam

Absolutely. The MFG limiter is set at 160 mph. You cannot eliminate it, but rather have to use Uprev and program a bigger value. I set mine at 230 mph so in actuality, there is no speed limitation in this case.

i got a uprev cable where is the option to change the value for the speed limiter?

conmam · 12-05-2012, 09:37 PM

Quote:

Originally Posted by FPenvy

i got a uprev cable where is the option to change the value for the speed limiter?

You should call Uprev and ask Jared. It is hard for me to explain though here since I don't have my car with me. If I did, I could just run out there and open up the GUI and let u know..

FPenvy · 12-05-2012, 09:45 PM

Quote:

Originally Posted by conmam

You should call Uprev and ask Jared. It is hard for me to explain though here since I don't have my car with me. If I did, I could just run out there and open up the GUI and let u know..

its cool bro i appreciate it. im not fully up to speed with everything in it hence why i havent tuned anything myself yet.

elperuano · 12-05-2012, 07:51 PM

6th gear at 80 is probably around 3k rpm or more.. That's not revving high at all. What I personally would do is go wot from 4th n max out at 6th. That's how I hit 150 all the time. Shifting gears around 7k.
What Lafitte is doin is starting his run from 80 on 6th gear which is prolly little more than 3k rpm. Now to push it from top of 5th into 6th is how I would do it, but rolling start at 80 on 6th... Personally I'd use another gear. To each his own

conmam · 12-05-2012, 09:09 PM

Quote:

Originally Posted by elperuano

6th gear at 80 is probably around 3k rpm or more.. That's not revving high at all. What I personally would do is go wot from 4th n max out at 6th. That's how I hit 150 all the time. Shifting gears around 7k.
What Lafitte is doin is starting his run from 80 on 6th gear which is prolly little more than 3k rpm. Now to push it from top of 5th into 6th is how I would do it, but rolling start at 80 on 6th... Personally I'd use another gear. To each his own

Yeah, I think so. At 3000 rpm it is not optimum for the engine torque output. That will somehow lug the motor a bit even with Twin Turbo set up. Best to go to 5th , then 6th. If you want ultimate pick up, then from 4th to 6th ...

Mr.Squeeze · 12-06-2012, 02:19 AM

Quote:

Originally Posted by elperuano

6th gear at 80 is probably around 3k rpm or more.. That's not revving high at all. What I personally would do is go wot from 4th n max out at 6th. That's how I hit 150 all the time. Shifting gears around 7k.
What Lafitte is doin is starting his run from 80 on 6th gear which is prolly little more than 3k rpm. Now to push it from top of 5th into 6th is how I would do it, but rolling start at 80 on 6th... Personally I'd use another gear. To each his own

Sounds like you nee 3.3 final drive, I start in 3 gear at 80 and end up in 5 gear by 150.

conmam · 12-06-2012, 03:13 AM

Quote:

Originally Posted by Mr.Squeeze

Sounds like you nee 3.3 final drive, I start in 3 gear at 80 and end up in 5 gear by 150.

But then your speedometer reading will be way off because factory speed sensor was made for 3.629 final drive ratio. How do we correct this issue ?

Mr.Squeeze · 12-06-2012, 03:49 AM

Quote:

Originally Posted by conmam

But then your speedometer reading will be way off because factory speed sensor was made for 3.629 final drive ratio. How do we correct this issue ?

Not sure how to correct the issue people have been switching final drives on Z's for years. At my power level I need it the stock gears are just to short for my power level. My speedometer being of a little is something I am not worried about it can be thrown off just by changing tires.

conmam · 12-06-2012, 03:57 AM

Quote:

Originally Posted by Mr.Squeeze

Not sure how to correct the issue people have been switching final drives on Z's for years. At my power level I need it the stock gears are just to short for my power level. My speedometer being of a little is something I am not worried about it can be thrown off just by changing tires.

How much whp and wtq are you having on your Z ?

roy'sz · 12-06-2012, 12:31 PM

Quote:

Originally Posted by conmam

But then your speedometer reading will be way off because factory speed sensor was made for 3.629 final drive ratio. How do we correct this issue ?

You have to change the values on the digital speed counters. Since the car is trying to read 3.629 you have to change that value to 3.3XX, also if you have changed tire sizes then you need to update that as well. I thought that this setting came with the handheld or can be done when you uprev?

conmam · 12-06-2012, 01:05 PM

Quote:

Originally Posted by roy'sz

You have to change the values on the digital speed counters. Since the car is trying to read 3.629 you have to change that value to 3.3XX, also if you have changed tire sizes then you need to update that as well. I thought that this setting came with the handheld or can be done when you uprev?

Unfortunately, Uprev does not deal with BCM commands. They only deal with ECU commands. Besides that, they restrict mostly to performance parameters. Uprev cannot even do do everything that Consult III can do, unfortunately. However, Uprev is great for all your performance needs pretty much.

SS_Firehawk · 12-06-2012, 04:57 AM

Squeeze definitely has a 200mph car. Aero is .29 cd. The GT500 is a brick in comparison, and does not make the kind of juice Squeeze is making (pun intended)

Compdoc777 · 12-06-2012, 06:48 AM

Quote:

Originally Posted by pwrhsms

Hey guys! I have been searching for this info for the past three hours so if I missed it sorry MODS a redo thread was not intended.

OK now to business.

I live in Germany and like to drive really fast.

Even with a 24 row oil cooler and everything else stock at cruizing speeds at 130MPH my oil temps sit around 220-240.

When I open up and top out at 165mph it rides around 250-260.

I am goin to get FI this winter but my big concern is oil temps at speeds in excess of 180+.

does anyone have any advice on setup to include FI and OIL cooler parts?

Just put a fan on the oil cooler you have now. Also where did you mount the cooler? If you put it on the drivers side or left side of the car I front of the radiator and AC heat exchanger the fan for that will suck air through the cooler when the ac is on and cool the oil by 200 degrees. If you have some way to turn that fan on while the AC is off that would solve some cooling problems. Also adding a fan to the oil cooler would work as well.

Yet at those speeds it would be nice to have two coolers with fans.

I think the best would be a cooler in each side of the front wheel well with an hole cut to let air in and one out with hose that goes to cool the brakes and puller fans on both. That way the faster you drive the more cooling and even cooling when you slow down.

SS_Firehawk · 12-06-2012, 08:43 AM

I'm definitely no expert, but pushing a lot of torque on the overdrive gears, gears that are not built to handle the abuse the first few get, they may not hold up very well. My shop was hesitant to run my dyno's in 5th because they didn't want to put that extra wear on the gear. Again, I have no direct experience with the failure of the gears.

FPenvy · 12-06-2012, 08:47 AM

Quote:

Originally Posted by SS_Firehawk

I'm definitely no expert, but pushing a lot of torque on the overdrive gears, gears that are not built to handle the abuse the first few get, they may not hold up very well. My shop was hesitant to run my dyno's in 5th because they didn't want to put that extra wear on the gear. Again, I have no direct experience with the failure of the gears.

and thats where i decided maybe no FI since i like going fast lol if there was more info and tests on the GTM stg 4 tranny maybe i'd go that route. til then it's wait to get a GT-R unless i just TT my Z lol

my original goal was 550 to 600WHP but at those numbers the TQ gets up there and i'd probably blow my transmission in a week.

12-06-2012, 04:57 AM	#12 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	Squeeze definitely has a 200mph car. Aero is .29 cd. The GT500 is a brick in comparison, and does not make the kind of juice Squeeze is making (pun intended) __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

12-06-2012, 08:43 AM	#14 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	I'm definitely no expert, but pushing a lot of torque on the overdrive gears, gears that are not built to handle the abuse the first few get, they may not hold up very well. My shop was hesitant to run my dyno's in 5th because they didn't want to put that extra wear on the gear. Again, I have no direct experience with the failure of the gears. DEpointfive0 likes this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

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12-05-2012, 07:51 PM	#4 (permalink)
elperuano A True Z Fanatic Join Date: Oct 2011 Location: Southwest FL Posts: 1,374 Drives: G37S Rep Power: 29	6th gear at 80 is probably around 3k rpm or more.. That's not revving high at all. What I personally would do is go wot from 4th n max out at 6th. That's how I hit 150 all the time. Shifting gears around 7k. What Lafitte is doin is starting his run from 80 on 6th gear which is prolly little more than 3k rpm. Now to push it from top of 5th into 6th is how I would do it, but rolling start at 80 on 6th... Personally I'd use another gear. To each his own