J37 throttle high cold idle

FlashPro questions & answers specific to the 2007-2008 US TSX
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CivicVTi
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J37 throttle high cold idle

Post by CivicVTi » Sun Jan 14, 2018 11:06 am

I have installed a J37 throttle on my 06 supercharged TSX. When hot, everything works fine (idles at 800rpm no problem) but cold idle is very high, reaching fuel cut. I tried ignition retard when cold but this does not seem to work as intended. I guess stock ECU uses another throttle MAP when cold and even a small angle change results in high flow changes with this TB. Any workarounds Hondata?

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Hondata
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Re: J37 throttle high cold idle

Post by Hondata » Mon Jan 15, 2018 9:14 am

The throttle flows more at small openings so the ECU doesn't relate idle correctly. Try the throttle learn procedure after reflashing because that may be necessary.
Also see this post: viewtopic.php?f=29&t=18527
Hondata

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