PS: Please stay out of those filters. . .
PS: Please stay out of those filters. . .
Best bet is to stay stock. K&N fanboys would say they're best, same for UNI and Simota. Its an endless pointless debate on which of them harms the engine least, because at the end of the day, all of them would be killing the engine already!
Plz dont go for after market filters... They allow dust to pass through which is harmful for the engine in long run.. And although cbr has a closed loop, it cant adjust for this much change in air intake.. It has narrow band o2 sensor which can compensate only for very little change (like change in air intake due to unclean stock air filter)
So you'll be running lean with these aftermarket filters which is harmful for engine and thats the reason you lose top end and engine heating up. And you'll not gain acceleration.. Its because of the sound you feel that you have gained. The bike just revs a little bit faster and freely due to free intake.
Ps: why people are promoting here in xbhp?? Its not olx or quickr :(
PGM-Fi operating logic also needs an explanation of what is called the 'open-loop' and 'closed-loop' operating mode for PGM-Fi. Closed-loop means a feedback-loop mode. PGM-Fi works in closed-loop mainly during engine idling. In closed-loop mode, PGM-Fi uses the signal from one critical sensor, the O2 (or sometimes known as lambda) sensor to attempt to attain an ideal air-fuel ratio of 14.7:1 (stoichometric ratio). An O2 sensor operates by measuring the amount of oxygen left in the exhaust gas. The amount of oxygen is a good indicator of the combustion efficiency and a higher oxygen content will suggest a lean condition and vice versa. O2 sensors are normally mounted on the exhaust manifold (or sometimes called the extractors) and/or catalytic converters (for cars equipped with them) and PGM-Fi uses the O2 sensor reading to bump air-fuel ratio up or down until it gets a reading indicating optimum combustion.
So during engine idling, the air-fuel ratio may initially fluctuate up and down based on O2 sensor readings but should eventually settle to a stable value corresponding to the ideal 14.7:1 ratio. PGM-Fi works in closed-loop mode only during idle or very light accelerator openings.
From moderate to maximum throttle openings, PGM-Fi goes into an open-loop mode. In open loop mode, PGM-Fi ignores the O2 sensor signal but will still use the other sensor signals (air temperature and pressure, TPS etc) to make compensations on the base injector opening values. However for very heavy accelerator positions (indicated by large TPS values), PGM-Fi now gives priority to engine RPM, MAP and TPS sensor readings. RPM and MAP sensors will always be required since they are input parameters for reading the fuel-map. But in open-loop mode, PGM-Fi no longer makes as much compensation for other sensor readings, other than TPS sensor, as in closed-loop mode.
When operating in open-loop then, PGM-Fi will usually be operating in a rich-mode. This will be especially true for JDM vehicles when imported directly from Japan into various countries (whether as used or new cars). The PGM-Fi program will have been originally designed based on the atmospheric conditions in Japan and they will almost certainly be different from the countries into which the cars are imported. Even for truly localized line-ups, a rich condition also normally prevail because the PGM-Fi program would have been originally developed to accomodate for the whole country or sometimes even an entire region and thus would again be based on a large base of 'average' values.
and the FI adjusting the fuel accordingly, there IS a perceptible difference in low-end torque. Obviously in quantifiable
terms the bhp/torque gain on paper is negligible.
Also, there is no harm to the engine as the Simota filters are not as free breathing as, say, a K&N. My R15 is running strong
even at 60,000km on odo. Switched to the Simota at 17,000km on odo.
After 1st service of my cbr 150 there is some hissing sound from the chain the service center technician does not acknowledge it. What should I do?
Sent from my HTC Sensation XL with Beats Audio X315e using xBhp Connect mobile app