P400 noticeably worse performance in warmer weather
TReK
Joined: Oct 2007
Posts: 2,773
Likes: 1,982
From: Whidbey Island, PNW
Yes, turbo cars do, traditionally, suffer performance losses in hot weather. HOWEVER it's not 1986, 1996, even 2006. Modern turbo cars are surprisingly even across temp / pressure / altitudes, unlike days of old.
I notice zero performance difference in my Deefer P400 whether it's 110 degrees out, or 40 degrees out. If what you describe is happening, something is amiss.
I notice zero performance difference in my Deefer P400 whether it's 110 degrees out, or 40 degrees out. If what you describe is happening, something is amiss.
Pro Wrench
Joined: Jun 2021
Posts: 1,558
Likes: 1,439
To me, the OP was asked if it's normal and I feel like we're all saying yes, technically it's explainable but no, my personal experience with the p400 in a 110 is that you really kinda have to be paying attention to notice the difference.
Back to that original post, there may be a bit of a software issue there if it's "that" prevalent.
If you full-on stomp the gas all the way, the p400 setup does do a little "WTF" moment but that doesn't sound like what going on here?
Back to that original post, there may be a bit of a software issue there if it's "that" prevalent.
If you full-on stomp the gas all the way, the p400 setup does do a little "WTF" moment but that doesn't sound like what going on here?
Last edited by _Allegedly; May 11, 2023 at 07:28 AM.
Winching
Joined: Feb 2022
Posts: 692
Likes: 642
I don't know if I'm crazy or what. I picked up my 110 P400 in the winter. Felt like the throttle response was great, got moving very well. Perhaps coincidental, but now it's warming up and I feel like I'm getting lousy torque at low RPMs. Then BAM - off to the races once throttle is half way to the floor. Also seems like I'm listening to it wind up more in low gears before shifting. It got cold again last week and it was back the regular performance I had come to appreciate. Now it's back over 70 degrees with some A/C running here and there and acting sluggish again. I've never had a turbo charged engine before (or a MHEV for that matter). Anyone else experience this? Really noticeable in low speed city driving. On the highway at speed not noticeable at all.
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