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Old 03-09-2018, 11:06 AM
Skyliner32 Skyliner32 is offline
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Power output under different temperature for N55 335i

I'm curious to know if you guys are getting different behavior under cold(like around or below 32F or warm day). After I floored it at 200 water temperature and 40F outside temperature, I find the torque reading (sport mode display) little hesitated to go to the full 300 from 200, eventually it was there, but the last time I floored it the way it builds up torque was quicker and smoother.

Thoughts?
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Old 03-09-2018, 11:47 AM
N52 Moistenor N52 Moistenor is offline
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First off, that little chart is not an accurate way of determining how much power your car is making. Yes, different temps affect performance (below 100c or above 110c and you lose some power) but it could’ve been something simple like how you apply the throttle. Easing into the pedal gradually in manual mode will help the turbo respond better than just flooring it right away. Try it.
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Old 03-09-2018, 03:33 PM
Matthew424 Matthew424 is offline
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Quote:
Originally Posted by N52 Moistenor View Post
First off, that little chart is not an accurate way of determining how much power your car is making. Yes, different temps affect performance (below 100c or above 110c and you lose some power) but it could’ve been something simple like how you apply the throttle. Easing into the pedal gradually in manual mode will help the turbo respond better than just flooring it right away. Try it.
I agree. I think the OP may also be describing turbo lag, where the RPMs need to be build (so the turbo spools up) and you feel the surge in the power.
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Old 03-27-2018, 11:52 AM
Skyliner32 Skyliner32 is offline
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Thanks, I'm not used to not having a boost gauge in the car. I tried it and felt the difference, weird setup. My Skyline would fly after I just floor it.
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Old 03-27-2018, 11:53 AM
Skyliner32 Skyliner32 is offline
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I don't think it's the lag, it felt like the car was not determined to go.
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Old 03-27-2018, 11:56 AM
Skyliner32 Skyliner32 is offline
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Thanks, I'm not used to not having a boost gauge in the car. I tried it and felt the difference, weird setup. My Skyline would fly after I just floor it.
Quote:
Originally Posted by N52 Moistenor View Post
First off, that little chart is not an accurate way of determining how much power your car is making. Yes, different temps affect performance (below 100c or above 110c and you lose some power) but it could’ve been something simple like how you apply the throttle. Easing into the pedal gradually in manual mode will help the turbo respond better than just flooring it right away. Try it.
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Old 03-27-2018, 11:56 AM
Skyliner32 Skyliner32 is offline
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I don't think it's the lag, it felt like the car was not determined to go.
Quote:
Originally Posted by Matthew424 View Post
I agree. I think the OP may also be describing turbo lag, where the RPMs need to be build (so the turbo spools up) and you feel the surge in the power.
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Old 03-27-2018, 12:07 PM
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acoste acoste is offline
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Quote:
Originally Posted by Skyliner32 View Post
I'm curious to know if you guys are getting different behavior under cold(like around or below 32F or warm day). After I floored it at 200 water temperature and 40F outside temperature, I find the torque reading (sport mode display) little hesitated to go to the full 300 from 200, eventually it was there, but the last time I floored it the way it builds up torque was quicker and smoother.

Thoughts?
It should be the other way around. (warm) engine performs better in cold weather versus in hot because it can pump more air into the engine.

either the DSC asked for power reduction or the transmission (does not allow more torque than a specific limit)
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Old 03-29-2018, 05:29 PM
ClevelandBeemer ClevelandBeemer is offline
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Keep in mind that the temperature gauge in the cluster is not coolant temp. It's actually oil temp.

What rpm are you flooring it at?

What gear were you in?

Were you using 93 octane fuel or something less? Also possibility of bad fuel.

Comparing a GT-R to your 335 GT is a terrible comparison. It's like comparing a 335i to a Corolla.....
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Last edited by ClevelandBeemer; 03-29-2018 at 05:30 PM.
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Old 03-29-2018, 05:56 PM
satx satx is offline
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Sounds to me like traction control working it's magic, if it was that cold outside likely the roads and tires were not at optimal temp
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