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Seems like as soon as it gets over 90* I get a nasty hesitation in throttle response at very low rpm. Anyone relate? (yes i know hot air makes for
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07-12-2014, 04:20 PM
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#1 (permalink) |
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Base Member
Join Date: Aug 2012
Location: bedford
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Drives: 09 Banana
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Ahh the Texas heat and delay of power.
Seems like as soon as it gets over 90* I get a nasty hesitation in throttle response at very low rpm. Anyone relate? (yes i know hot air makes for slower car) I live in dallas and we always have high humidity too
Last edited by Dixnot; 07-12-2014 at 04:29 PM. |
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07-12-2014, 05:27 PM
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#3 (permalink) |
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Premium Member
 
Join Date: Nov 2010
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Possibly the ECU pulling timing when IAT is above, IIRC, 85 F.
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07-12-2014, 06:23 PM
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#5 (permalink) |
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A True Z Fanatic
 Join Date: Aug 2009
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hummm... ive driven my 09 numerous times in 90F+.
no issue with mine. there is heatsoak while at a light so the power delivery is obviously less vs a cool day, but no hesitation. |
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07-12-2014, 07:03 PM
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#6 (permalink) |
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Enthusiast Member
Join Date: Jan 2014
Location: San Antonio, Texas
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no issue here, and I live in San Antonio
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07-12-2014, 07:27 PM
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#7 (permalink) |
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Track Member
Join Date: Apr 2011
Location: Nor Cal
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We've had 90 degree weather for the past few weeks, but I have not noticed any hesitation.
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07-12-2014, 08:32 PM
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#8 (permalink) |
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Track Member
Join Date: Feb 2013
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My Z will spin the tires at the slightest provocation leaving work when it's cold, I mean it's like a different car when it gets warm. Not bad mind you, but I think all the cars I've ever owned ran peppier when first cranked.
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07-12-2014, 08:51 PM
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#9 (permalink) |
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A True Z Fanatic
Join Date: Aug 2011
Location: Tacoma, WA
Age: 40
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When I lived in Texas, I noticed a loss of power in the summer time (90F of above). Also when I had my car tuned at Uprev, they told me that you start losing HP once your oil temp starts getting over 220... not sure if there is any truth behind that.
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07-12-2014, 11:33 PM
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#10 (permalink) |
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Base Member
Join Date: Oct 2013
Location: Texas
Age: 37
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Drives: 2014 Blue T/S 7AT
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I also live in Texas and I think I'm experiencing the same thing op. My car feels perfectly normal in the high RPM's but the punch off the line is lacking for sure.
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07-12-2014, 11:37 PM
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#11 (permalink) |
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Base Member
Join Date: Dec 2010
Location: Somewhere in Texas
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Drives: 2008 G35 Sedan
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During my last Texas summer, I would experience loss of power and my car running sluggish when temps reached above 90F. My tuner made some slight adjustments and corrected the issues.
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07-13-2014, 12:59 AM
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#12 (permalink) |
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A True Z Fanatic
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Ok let me clear things up a bit, if you had and up rev tune done by a real tuner, means he adjusted ur a/f ratio on a/f targets and timing and so on, you will not have this delay. If you just installed a rom by ur self w/o a tuner person correction, you will have that stock delay(if u never adjusted it). If you never had the tune you will have that low rpm delay. I personally noticed that an up rev rom (back to stock) has more lag than the original nissan programming(stock) this due to a/f ratio is 14.7 till ~3k rpm also at WOT it hits 11.7 a/f ratio cuz if u put wrong fuel it wont do too much engine damage.
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07-13-2014, 06:20 PM
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#14 (permalink) |
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Base Member
Join Date: Feb 2014
Location: Charlotte, NC
Posts: 223
Drives: 2009 370z 7at
Rep Power: 11 |
I reset my ecu a few dsys ago to clear the long term fuel trims and this happened to me testing a 0-60 run where my 60 ft was 2.7 instead of much quicker. I pushed it to mid throttle from dead stop and big bog. I have never experienced this before ftom line in heat. Im hoping its because of the reser of ecu and will get back to normal after it lears some more driving
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