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Discussion Starter · #1 · (Edited)
*****1/20/2014 UPDATE - it appears that the electric motor does not always disengage under following conditions: foot on brake, wheels not rolling, foot on gas. Therefore, since this is not 100% repeatable and not an advertised feature, I no longer recommend this...

******

I posted this elsewhere, but it's buried in an thread. So - thought I'd make a new thread just for this topic. Not sure this will improve 0-60 times. May be worth a tenth. Make sure battery is at full charge.

(1) turn off traction control (my preference)
(2) put gear selector in neutral
(3) apply brakes
(4) fully depress the accelerator pedal (don't worry, computer will hold RPM at 1000)
(5) put gear selector in Drive (or manual drive - your choice). Don't worry, at 1000 RPM, nothing dramatic happens... RPMs stay at 1000.
(6) release brake and you're off
 

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I posted this elsewhere, but it's buried in an thread. So - thought I'd make a new thread just for this topic. Not sure this will improve 0-60 times. May be worth a tenth. Make sure battery is at full charge.

(1) turn off traction control (my preference)
(2) put gear selector in neutral
(3) apply brakes
(4) fully depress the accelerator pedal (don't worry, computer will hold RPM at 1000)
(5) put gear selector in Drive (or manual drive - your choice). Don't worry, at 1000 RPM, nothing dramatic happens... RPMs stay at 1000.
(6) release brake and you're off
Interesting.
 

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Discussion Starter · #8 ·
very interesting. will surely test tomorrow.

Is this posted in the manual or anything? Just curious if it's official infiniti thing
Nope - not in the owners manual. I stumbled across this as I was attempting to torque brake and found it was not possible in hybrid. Also wanted to rev the engine in neutral and park, and found that's also not possible (you can get it to about 3500 in park, 1000 in neutral). Hybrid has a lot of computer intervention.
 

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Discussion Starter · #9 ·
Update and caution: It seems with a cold engine (or for some other reason) the launch control does not ALWAYS work as described in my earlier post. When it does not work, you will feel the electric motor clutch engage the transmission and try to pull the car forward with brakes applied and gas pedal pressed to floor. While 1000 rpm is not a huge pull on the engaged clutch (kind of like a high idle with brake on), probably not a good idea to hold it in that situation for long.
 

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This had to be one of the most potentially catastrophic how to's I've seen in some time. Not only is the transmission in this car ~20% of the value of the car ( @ current warranty price), but neutral dropping a car with two clutches and an electric motor will most likely not work as launch control for long. The amount of unexpected load you are running through the dry clutch ( only I'd the battery is charging) and Ac motor through a transmission that is not expecting it seems illogical.

Quick food for thought...since we know Infiniti watches this forum, and many manufacturers use forum posts against owners in cases of obvious abuse or fraud you should neutral drop with extreme caution.

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I haven't tried this, but it doesn't sound like a neutral drop if the computer limits the engine to 1000 RPM when you drop it into drive.
Hopefully the computer has half a brain and will not rev the engine until the transmission is engaged.

Or maybe it's since you have the brake engaged it will not let the engine rev until you release the brake?
No stand still burnouts allowed perhaps.... :rolleyes:
 

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Discussion Starter · #12 ·
This had to be one of the most potentially catastrophic how to's I've seen in some time. Not only is the transmission in this car ~20% of the value of the car ( @ current warranty price), but neutral dropping a car with two clutches and an electric motor will most likely not work as launch control for long.

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StevetheTech - I did not view this as neutral dropping. Several cars I've owned, when started cold, idle above 1000 rpm. I've never viewed putting foot on brake and putting it in drive in this condition as "neutral dropping". However, I value your expertise, so pls respond if you disagree. I'll have this post removed - do not want to damage my or any other car. Again - this is at 1000 RPM and foot on brake. The part that's different is this has an electric motor clutch as well - which when not rolling should not engage regen, and at 1000 RPM should not stress the tranny. But you should have the final word...
 

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Maybe what I was envisioning when reading this was using it as launch control. Throttle to the floor, quickly engaging drive and rocketing off. I really like the idea of getting the ICE and Ac motor working together but what I am unsure of is what the car, thinks is going on at that time. If the rpms are limited but the engine load request is very high ( normal idle is roughly 20%) when drive is engaged it might unleash everything the car had at that moment. Honestly I have no idea what the car is thinking at that moment, I don't know how the first clutch (exactly like a manual trans) would react to a sudden engagement like that.

Having never tried this I cannot offer any final word, or really anything more than a casual observation. The only thing I am sure of it's this transmission is not like any any of us have had in the past...unless you came from an M35H.

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No stand still burnouts allowed perhaps.... :rolleyes:
You haven't been able to do that since 06 in most of these cats. Even with everything disconnected the ecm will still cut the throttle is the wheels are slipping.

They have also used two foot throttle canceling logic ( no unintended acceleration ) since 02.


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Discussion Starter · #15 ·
1/20/2014 UPDATE - it appears that the electric motor does not always disengage under following conditions: foot on brake, wheels not rolling, foot on gas. Therefore, since this is not 100% repeatable and not an advertised feature, and StevetheTech has concerns, I no longer recommend this...

I have updated the first post in this thread.

If someone can PM me about how to remove a post, I'll remove this one.
 

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Aww now I feel bad, sorry it really did sound like a good idea. :) I'd just hate to see something bad happen. I'm curious to hear if easing into it then stomping on it work better. That would give everything a chance to start correctly.

What you really need is a classic tire smoker.
http://m.ebay.com/itm/181304859764?nav=SEARCH&sbk=1 (pardon the mobile link)

I'm always ruining other people's fun. :'(

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Does putting into Sport mode not help with launching? It would be nice that if it was in Sport mode the gas engine would automatically engage along with the electric...
 

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Does putting into Sport mode not help with launching? It would be nice that if it was in Sport mode the gas engine would automatically engage along with the electric...
I haven't seen anyone post info about this for a Hybrid.

I'm in standard mode probably 95% of the time.
I haven't had any launch issue's in standard mode that I can think of.
Unless sport somehow turns on the motor a split second faster.

Maybe Hunter or someone here has played around with standard vs sport mode....
 

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I haven't seen anyone post info about this for a Hybrid.

I'm in standard mode probably 95% of the time.
I haven't had any launch issue's in standard mode that I can think of.
Unless sport somehow turns on the motor a split second faster.

Maybe Hunter or someone here has played around with standard vs sport mode....
Yes I do think that Hunter81 Gordon Kenseth Earnhardt Johnson Stewart has done some experimenting.
 

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I haven't seen anyone post info about this for a Hybrid.

I'm in standard mode probably 95% of the time.
I haven't had any launch issue's in standard mode that I can think of.
Unless sport somehow turns on the motor a split second faster.

Maybe Hunter or someone here has played around with standard vs sport mode....
Manual mode works best for having the engine come on the fastest and also keeps the engine from falling into EV if you want to prevent loss of charge. Misiektoja, however, has apparently found a solution to keep the gas engine running while stopped. If you have the car in manual mode and do a more gradual brake to a stop, the engine seems to stay on indefinitely. I have only experimented a little with it since he (she? sorry, never want to assume since I don't know Polish names! ;)) told me about it, but it definitely seems to confuse the ECU from thinking the car came to a complete stop.

While flooring the car in manual mode always gets the gas engine going faster even if from 0 rpm, there is a problem. The extra torque causes wheel slippage and actually results in a slower time than just running the car in sport/auto mode where there is no wheel slippage. I plan to see if there is still a way to use manual to get a faster time, but maybe ease into the throttle a little to avoid the wheel slippage. Going to the drag strip with some friends Friday so I'll be playing with it every which way I can! :)
 
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