Knowledgebase: GENERAL ENQUIRIES
I finally got around to installing the 25mm Cold Air Intake Manifold Insulator for a 2001 VX Auto Ecotec i purchased a few months ago yesterday, and now my engine runs really rough (sounds like a rotary, and the whole engine shakes) when the revs drop bel
Posted by MACE Support on 30 April 2018 11:12 AM
You'll need to check for any vacuum leaks. This is very likely what is causing the rough running, otherwise it could be an ignition lead that hasn't been installed properly. If the problem still persists please contact us immediately.

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