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Old 05-14-2023, 04:09 PM   #115
GunMetalGrey

 
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Drives: 2018 ZL1 (SOLD) 992 GT3 (current)
Join Date: Aug 2013
Location: Victoria B.C. Canada
Posts: 1,404
Has anyone who’s experienced icemode also had a problem/delay with the engine slowly the car down when downshifting? I’m wondering if the throttle still being active (even though the throttle pedal is not depressed) while braking simultaneously could cause the issue.

Intermittently my car will almost act like cruise control is still on for about 3 to 5 seconds after downshifting before the car starts to slow down, essentially the car will start to slow down more than it just was after downshifting even though the engine is at a lower rpm than it just was immediately after the down shift took place. It’s very intermittent.

The boost bypass valve was suggested as a possible culprit and indeed it was disconnected and not working but after repairing it the issue is still there
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2018 ZL1; Mag 2650 and 2 inch LT Headers , every SPL suspension upgrade, MCS 2 way coilovers, sway bars, square SC3R 325's all the way around, and multiple brake cooling upgrades
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