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Old 01-17-2003, 08:31 PM   #45
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Member#: 14141
Join Date: Jan 2002
Location: [email protected] @ 5800 ft on 13T
2002 Impreza WRX

Default Good point


I'd had to get a crappy tank of fuel (or someone fills it with 87 on accident!) after a reflash and have the engine detonate to bits because the mapped ECU no longer has the adjustment range to back off enough.
Good point, the other thing that comes to mind from Jon's post, is if the ECU only monitors for knock up to 5000 rpm then presumably extrapolates suitable timing for 5000+ rpm does knock protection exist at 5000+ rpm?

For example, if a tuner changes the mixture or boost profile at high rpm, does the ECU just require a much stronger signal at high rpm to pull timing?

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Last edited by hotrod; 01-18-2003 at 01:16 AM.
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