Thread: Does the 250X run an O2 sensor
03-09-2007, 12:25 PM #1
Does the 250X run an O2 sensor
I was looking my ski over last night and could not find an o2 sensor, does it run one or does it run in open loop all the time?
03-09-2007, 01:19 PM #2
03-09-2007, 02:10 PM #3
The reason I was asking was I wanted to put my wideband on it and was trying to find a "dry" spot in the exhaust.
03-09-2007, 03:17 PM #4
OK. With much persistence…I finally got a (verbal) answer (2nd hand through dealer, source is development engineer at Kawi) answer to these questions:
Scott – Q) Is there a knock-sensor on the Kaw Ultra 250X?
Kawi – A) NO.
Scott – Q) Can I run 87 or 89 octane in this ski?
Kawi – A) NO. ECU map is optimized for 90 octane [only].
Scott – Q) Will I benefit from running 93 or 100 octane in this ski?
Kawi – A) NO. ECU map is optimized for 90 octane, performance will probably same for 90-93 octane…same or possibly slightly worse on 100 octane.
Scott – Q) What are the consequences, if any, of running 87 octane?
Kawi – A) Loss of power and damage to the engine due to detonation.
Scott – Q) Would running 87 octane void the warranty?
Kawi – A) YES. [Off the record – If you don’t tell…then it will probably get fixed under warranty.]
Scott – Q) Can I use octane booster…if only 89 or lower octane is available?
Kawi – A) Some of those are just snake oil…some are probably good…who knows which…better off to mix some 93 or 100 octane from the gas station with the other. However, most of engine damage we see is caused by WATER in the gas, usually purchased at a marina. Best bet is to just buy 90 [or 91-93] octane available at most gas stations.
03-09-2007, 03:31 PM #5
03-09-2007, 07:01 PM #6
I will be covering the placement for a O2 sensor. There is only one spot it can go. Once I get my new stinger section Ill show you the correct placement. You may want to order a "spacer bung" to aviod burning the sensor.
03-11-2007, 04:42 PM #7
Wow, I am really surprised they did not install a knock sensor on a forced induction engine It could easily have been incorporated and then if you only had low octane fuel, the ECU could retard timing to prevent detonation and guard against damage.
03-11-2007, 09:06 PM #8snapper455Guest
ECU is a CLosed loop MAP system
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