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09-14-2017, 06:29 PM | #23 | |
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I've heard people reporting a few degrees of timing pull even running a few litres of E85 in a tank of 98 when using a US93 map. 95 maps will still pull timing in the spool and low load regions. |
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09-14-2017, 06:40 PM | #24 | |
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But you do sometimes get timing corrections which you can feel, mostly at lower revs on spoolup. Most people don't notice this though. A custom tune by someone whos very experienced in the platform and willing to develop the tune for all driving conditions. ie you won't get a great tune with a few iterations where you only send WOT logs.
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09-14-2017, 10:33 PM | #27 |
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Definitely. knock ratings from a standardised CFR lab engine. In the US most pump gas actually has some small amount of ethanol in it and that has a disproportional benefit on a modern DI engine. So our ron ratings behave worse than you would expect from the equivalent ACN rating.
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