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Message: <blockquote data-quote="sb3" data-source="post: 2888231" data-attributes="member: 12180"><p>Don't think its the exhaust as the only vehicle i've heard having carbon stuck in the exhaust was a kancil (ori piping too small). Have you de-cat your exhaust yet? , cats have the tendency to get stuck when too much carbon exiting out of the exhaust (incorrect air/fuel mixture or running too rich).Sometimes, your diagnostic scanner cannot detect a problem if it is not sensor related. I would suspect either the throttle position sensor, Maf/AFM or one of the hoses joint or manifold gasket is leaking air. What about idling? Is it coughing or having smooth idle . Our felio should idle around 500-600 rpm quite smoothly, otherwise something is wrg already.To check the air leak from the maf till the inlet manifold (upperhalf) try spraying some carb/throttle body cleaner sparingly during idling of the engine. CAUTION: DO NOT SPRAY DIRECTLY ON ANY SENSOR OR CONNECTORS. Just around the hoses gaps and inlet manifold gasket. If there are some leaks the RPM would suddenly surge. Then u have detected the leak! Try something cheap like this b4 deciding on any components swap.</p></blockquote><p></p>

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