QUOTE(jtan.pdr @ Sep 1 2018, 10:05 PM)
ya man.. reduce in power...
if any of you guys/gals feel that the engine is feeling unusual in terms of power delivery, ie sluggish etc, try another petrol brand...
see how it feels...
different stations for same brand can try oso... some stations more dirty than others, especially older ones that have not cleaned their storage tanks..
Yah agreed, different brand seem to have quite an effect on Bezza... Maybe 11:5 compression ratio and sensitive systems play its part in protecting the engine and exposing fuel quality.
My opinion our national brand petrol really excellent with this car... Got some brand like engine running on sandpaper, some is so butter that while seems smooth is like driving thru thick oil... Idk man... Butt dyno analysis...
For one, really dont trust those big name reviewers on petrol or RON. How can they expect to get difference between 1 fuel tank worth of petrol switch.
From my understanding of reading super technical things.. The ECU has real-time fuel and ignition trim, which reacts immediately to engine knocking etc.
Then it averages/use algorithm to calculate the real-time fuel tirm into short term fuel trim, which is updated for the next time you start the car or updated after a certain drive cycle or drive duration or distance. So that it can reasonably maintain a no-knock condition for mid-term.
Then, there is another calculation for long term trim, which updates everytime u refuel, to maintain almost complete long term no-knock condition based on general weather or engine condition etc... Same principle applies to ignition trim, gearbox adaptive learning, stability control etc... First its done immediately, then short term, and lastly long term to ensure it doesnt fakap the system, to ensure it can reverse if condition changes and to ensure it doesnt cause sudden damages from over-compensation. If there is a situation that needs over-compensation, it will revert to 'fail-safe' which is the safest and presumably 'most lembap' setting. Each stage should have it's 'limits of authority' so as to not cause big sudden changes, it should be safe and progressive. Unless u are driving a performance car with excellent realtime systems. Different systems will have different limits, realtime stabily/traction control might reduce engine power from 1% to 80%, whereas fuel/knock maybe 1 to 10% reduction etc..
So, based on my understanding of systems, muntah darah sometimes to see all those marketing/public assurance articles...
This post has been edited by andrew9292: Sep 7 2018, 12:12 AM