11-19-2019, 10:47 PM | #5195 | |
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@peaches Good info thanks - was that on Nov 17th? Looks like ambient temp was pretty low that day, ~57F?
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11-20-2019, 07:24 AM | #5196 | |
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11-20-2019, 08:13 PM | #5197 |
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I don't know if the rad fans will do anything when you're hitting track speeds but I think it would help in the paddock for cool down. My concern is that with ambient temps ~60F and you're hitting ~240F and have to turn the heater on, that when its 90F ambient you're going to see 270F which is the same issue I have with the dual cooler.
Someone tried to explain thermal dynamics to me at one point but too far out of my realm. From what I've observed in a practical sense there is a direct correlation between a change in ambient temp and a change in oil temp when you're running at full tilt with the dual cooler. As far as the hood vents go I was reading one of Varus threads on their implementation and they did not observe a decrease in engine temp, the real advantage was some external engine components such as coils were at lower temps which might lead to longer life, and reduced hood flutter. I would think decreased heatsoak as well but I always prop my hood after a session. Ref: https://www.ft86club.com/forums/show...8&postcount=11 |
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11-22-2019, 12:00 AM | #5198 | |
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i dont have the ecutek cable, and iirc, the tuner "sealed" my tune on my ecu, so no other tuner could open it and steal his tricks? is that right or am i out of my mind? |
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11-22-2019, 12:16 PM | #5199 | |
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11-22-2019, 05:24 PM | #5200 | |
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i guess ill pass on the headers for now, im the kinda guy that wants my tune to be in line 100% with my mods. something i might explore in the future is buying the cable and dongle and putting a delicious map on it. i really know nothing about that though. like i said, i dont think i even can bc the tune was "sealed" by the tuner during the dyno |
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11-22-2019, 06:16 PM | #5201 | |
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Or find a new tuner or etuner. They will have to start over building up their own tune for you. But then subsequent retunes from them will be quicker/easier/cheaper. Almost every tuner locks the tune so only they can see it/change it. This prevents tuners and consumers from stealing their work. But you can always have a new tuner create you a new base map and they can then tune it. |
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11-23-2019, 11:23 AM | #5202 | |
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11-23-2019, 11:36 AM | #5203 | |
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Though, I must admit, I have replaced my old stock header with the improved 2017+ stock header last summer along with HKS dual-resonator (catless) front pipe. Without any change in tune, I definitely got some power increase at the high rpm. I am confident that the engine is happy (-ier) since I got a little mpg increase as well for normal driving. You have a 2017+ model, right? Otherwise, you can do the same. |
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12-03-2019, 10:16 AM | #5204 | |
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The final question that I have is regarding tuning - can the ignition advance and other parameters be safely decreased to reduce the power output on an E85 tune? If anyone else outside of Mike has some good knowledge of this subject feel free to chime in - I'm an engineer and should be able to grasp whatever you present pretty well so the more detailed of an answer that anyone can provide the better. |
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12-03-2019, 03:51 PM | #5205 | |
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It depends on the impulse. In the FA20's case, the E85 is easier, because the amount of **time** spent pushing the piston down during combustion is greater, rather than the amount of **force** against the piston. This is courtesy of the ignition timing advance, rather than exploding more gas with more air to get a bigger boom. Another persoective: more timing advance allowed by ethanol allows you to harness more of the energy in the fuel used. You have the same energy density, because stoich hasn't changed, and your air intake hasnt changed. You are able to use more of it because you can advance timing without knocking. More boost = more fuel = bigger kaboom = more torque. However, because it's MORE boost, you (long story short) get LESS ignition timing, so while the boom is bigger, you are able to harness less of it. Remember, engines don't deliver a constant level of torque like an electric motor, but rather, deliver pulses. These pulses are smoothed out by things like heavy pulleys, flywheels, clutches, transmissions, etc. E85 = longer pulse. More boost = stronger pulse. Net torque output = sum of the pulse, whether longer and/or stronger. Hopefully that made sense. I can elaborate more. There's many other factors as well, but this is just a very surface level version. |
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12-03-2019, 04:49 PM | #5206 | |
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__________________
-2013 FRS/Black (Motor Blown/Under Construction)
http://www.ft86club.com/forums/showthread.php?t=135599 -1979 Trans AM/Black (Sold) -1969 Olds 442/Orange with white racing stripes - 2017 Audi A4/Black |
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12-03-2019, 05:36 PM | #5207 | |
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