Builds Boost but No power WTF
but at least my car is fine 
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From: The First State
Originally Posted by paul_dezod
Originally Posted by dave2610
its really amazing how much temperature can effect performance
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From: Germantown, MD
Originally Posted by dave2610
Originally Posted by paul_dezod
Originally Posted by dave2610
its really amazing how much temperature can effect performance
our ecu adjust for temps and humidity so yes this super secret thing will be able to correct things
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From: PTuning
my guess would be heat soak. Before I added water meth to my car, after a couple of auto cross runs my car felt like it lost 20hp or more (in the summer time). The hotter it gets, the more your ecu pulls timing. If it didnt pull timing then you risk detonation. It is a good thing that your car runs richer now that it is warm, the ecu is doing it's job. That's the beauty of a piggy-back, the toyota engineers hard work on developing temperature parameters offsetting timing and fuel trim remains intact, where as you would be looking at countless hours and hours of tuning a stand-alone with a knock-box and ear phones to tune for varience in temps. I know with the s2000 there is a map for the aem standalone which mimics factory trims as a starting point, but for the tC... not to sure
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Joined: Nov 2007
Posts: 2,893
From: Germantown, MD
Originally Posted by dave2610
so if our car corrects for temp what the heck is going on with my car?
wats happening is when ur hitting boost which is when ur piggy back decides to take its turn after 4k at wot.....it doesn fix its self or compensate for temps and humidity but under 3k and partial throttle its all ecu
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From: The First State
Originally Posted by blown_xa
my guess would be heat soak. Before I added water meth to my car, after a couple of auto cross runs my car felt like it lost 20hp or more (in the summer time). The hotter it gets, the more your ecu pulls timing. If it didnt pull timing then you risk detonation. It is a good thing that your car runs richer now that it is warm, the ecu is doing it's job. That's the beauty of a piggy-back, the toyota engineers hard work on developing temperature parameters offsetting timing and fuel trim remains intact, where as you would be looking at countless hours and hours of tuning a stand-alone with a knock-box and ear phones to tune for varience in temps. I know with the s2000 there is a map for the aem standalone which mimics factory trims as a starting point, but for the tC... not to sure
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SL Member
Joined: Jul 2005
Posts: 1,902
From: PTuning
Originally Posted by dave2610
Originally Posted by blown_xa
my guess would be heat soak. Before I added water meth to my car, after a couple of auto cross runs my car felt like it lost 20hp or more (in the summer time). The hotter it gets, the more your ecu pulls timing. If it didnt pull timing then you risk detonation. It is a good thing that your car runs richer now that it is warm, the ecu is doing it's job. That's the beauty of a piggy-back, the toyota engineers hard work on developing temperature parameters offsetting timing and fuel trim remains intact, where as you would be looking at countless hours and hours of tuning a stand-alone with a knock-box and ear phones to tune for varience in temps. I know with the s2000 there is a map for the aem standalone which mimics factory trims as a starting point, but for the tC... not to sure
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