Hesitation on acceleration when stomping gas. - Infiniti Q60 Forum
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post #1 of 47 (permalink) Old 04-24-2019, 09:04 AM Thread Starter
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Question Hesitation on acceleration when stomping gas.

I've noticed that when stomping the gas (especially when rolling at say 60mph or higher) it seems like the transmission downshifts twice (sport mode or greater) and the engine RPMs shoot up but there is a delay for seemingly 1 full second before power is actually applied. I'm not too familiar with modern autos but I could replicate the behavior on a manual by simply holding the clutch in too long.

Is this a characteristic of our tranny and if so, do you foresee any tuning solutions down the road to fix it? I'm familiar with hardware like the pedalbox, that was a lifesaver on my S5 from a general throttle response standpoint but my Q's throttle response is fine, it seems like gear engagement is the problem but wanted to ask the hive mind.

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post #2 of 47 (permalink) Old 04-24-2019, 07:46 PM
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bro.. I'm no engine tech guy, but all infinities do the same thing.. It was the same way on my G35 2007 infiniti.

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post #3 of 47 (permalink) Old 04-25-2019, 06:56 AM
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you're likely feeling the boost build and finally kick in after the downshift. it is an auto slushbox not a dual clutch so it does have a slight delay.


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post #4 of 47 (permalink) Old 04-25-2019, 12:32 PM
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bro.. I'm no engine tech guy, but all infinities do the same thing.. It was the same way on my G35 2007 infiniti.

Brokeas speaks truth. On my 2011 G37S Coupe with the 7AT, acceleration lag was far worse. It's a characteristic that seems part of Infiniti/Nissan's DNA. Perhaps it has more to do with the torque converter then the tranny itself, but all I can do is guess.

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post #5 of 47 (permalink) Old 04-25-2019, 12:42 PM
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Maybe the insides of your 20x11 HREs are making contact with your struts
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post #6 of 47 (permalink) Old 04-25-2019, 03:09 PM
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Maybe the insides of your 20x11 HREs are making contact with your struts

(Yes, I know you addressed Logan)



No.. when I bought my G35 2007 with 4 miles on it brand new the car has a lag in it. The company knows about it but has not and probably will not address the issue. His 20x11 are not rubbing or touching.. I have the same size in the rear on my car and that is not the issue. If that was the case it would be a visual rub on the strut. Only car that probably doesn't have the lag is the GTR.

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post #7 of 47 (permalink) Old 04-25-2019, 03:27 PM Thread Starter
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Originally Posted by Brokeas View Post
(Yes, I know you addressed Logan)



No.. when I bought my G35 2007 with 4 miles on it brand new the car has a lag in it. The company knows about it but has not and probably will not address the issue. His 20x11 are not rubbing or touching.. I have the same size in the rear on my car and that is not the issue. If that was the case it would be a visual rub on the strut. Only car that probably doesn't have the lag is the GTR.
Oddly enough they were rubbing which I realized while troubleshooting the cars tendency to slightly pull to the right when stomping the gas at high speed. This feels more like just a straight lag in gear engagement. Got the rubbing addressed yesterday, this engagement lag is still there. It isn't horrible.

It almost feels like if I stop short of the floor with the pedal, only requiring a single downshift, it responds much quicker.

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post #8 of 47 (permalink) Old 04-25-2019, 10:08 PM
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Originally Posted by staying_tuned View Post
Oddly enough they were rubbing which I realized while troubleshooting the cars tendency to slightly pull to the right when stomping the gas at high speed. This feels more like just a straight lag in gear engagement. Got the rubbing addressed yesterday, this engagement lag is still there. It isn't horrible.

It almost feels like if I stop short of the floor with the pedal, only requiring a single downshift, it responds much quicker.

bro the lag is not going away.. Only way to get rid of it is buy a different car other than an infiniti

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post #9 of 47 (permalink) Old 04-26-2019, 12:45 AM
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I keep waiting for word that Ecutek has cracked the TCM and will be offering a S/W flash accordingly...
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post #10 of 47 (permalink) Old 05-27-2019, 09:56 PM
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This post Got me thinking about the Burger Tuning pedal tuner I purchased almost immediately after getting my Q almost six months ago. I have to admit when my car was going crazy during the ECU relearn this weekend, I temporarily disabled the pedal tuner to see if that would help and I must say, the car was annoyingly UNdriveable as far as I am concerned.

That's how used I am to NOT have a delay. I found myself setting the tuner to more and more aggressive until its currently set (permanently) at MAX (red LED plus three).

Don't know if any of you are using it? I guess you don't need it with the Ecutek tune @IridiumRS400? Cause Seb probably took care of all that already?


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