Results 1 to 8 of 8
  1. #1
    Importracer's Avatar
    Join Date
    Feb 2007
    Location
    San Antonio, Tx
    Posts
    184
    +1
    2

    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?


  2. #2
    Nope none that Ive found either.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Pipe.png 
Views:	101 
Size:	22.7 KB 
ID:	18356  

  3. #3
    Importracer's Avatar
    Join Date
    Feb 2007
    Location
    San Antonio, Tx
    Posts
    184
    +1
    2
    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.

  4. #4
    jscottmsc's Avatar
    Join Date
    Sep 2006
    Location
    Charlotte, NC
    Posts
    223
    Quote Originally Posted by Importracer View Post
    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?
    (here is a repost from an earlier post)
    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.

  5. #5
    Importracer's Avatar
    Join Date
    Feb 2007
    Location
    San Antonio, Tx
    Posts
    184
    +1
    2
    Quote Originally Posted by jscottmsc View Post
    (here is a repost from an earlier post)
    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.
    I was looking for O2 not knock, but thanks for the info!

  6. #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.

  7. #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.

  8. #8
    snapper455
    Guest
    ECU is a CLosed loop MAP system

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. is it possible to split the o2 sensor signal to run 2 separate devices?
    By bscpaint in forum Yamaha PWC Performance (4-stroke)
    Replies: 17
    Last Post: 10-06-2016, 05:36 PM
  2. Need an O2 sensor
    By warsawspeedfreak in forum Sea Doo Open Discussion
    Replies: 3
    Last Post: 06-11-2015, 12:27 PM
  3. Can you split the feed from an O2 sensor?
    By tornado34 in forum 4-Tec Performance
    Replies: 0
    Last Post: 04-19-2015, 02:42 AM
  4. Replies: 5
    Last Post: 04-10-2014, 01:36 AM
  5. 951 jetting, does the PTO run hotter like the 787?
    By Piranha Performance in forum 2-Stroke Performance
    Replies: 0
    Last Post: 09-14-2008, 10:13 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •