Page 1 of 2 1 2 LastLast
Results 1 to 10 of 20

Thread: AFR reading

  1. #1
    hero's Avatar
    Join Date
    Feb 2011
    Location
    Australia sydney
    Posts
    331

    AFR reading

    hi
    i received my SDC ecu today pluged it in and took it out for a test.
    managed 116 kph at 8350 and pump filled with wiggs and plastic, ecu is set at 8550 rpm.
    i havent reset the tps and will do that asap..my afr at wot is 11.3 11.5 and my rrfrp is set at 55psi on dess...
    can i adjust the rrfrp psi to lean it out to 11.8?? will that affect the low and mid rpm?
    its idling at 12.5, while im cruising at 4000 5000 rpm its reading 13.5 to 14 is that safe?..
    what else can i try to get my rpm up to 8500..

    regards kiet


  2. #2
    R88ory RXP's Avatar
    Join Date
    Feb 2008
    Location
    Kent, England
    Posts
    2,737
    +1
    46
    Quote Originally Posted by hero View Post
    hi
    i received my SDC ecu today pluged it in and took it out for a test.
    managed 116 kph at 8350 and pump filled with wiggs and plastic, ecu is set at 8550 rpm.
    i havent reset the tps and will do that asap..my afr at wot is 11.3 11.5 and my rrfrp is set at 55psi on dess...
    can i adjust the rrfrp psi to lean it out to 11.8?? will that affect the low and mid rpm?
    its idling at 12.5, while im cruising at 4000 5000 rpm its reading 13.5 to 14 is that safe?..

    what else can i try to get my rpm up to 8500..

    regards kiet
    Unless your racing leave it alone, if your using a innovate AFR gauge thats about where you want it as they tend to read richer then what is actual AFR.

    13.5 is fine in the mid and will make it vey snappy out of corners. R88

  3. #3
    hero's Avatar
    Join Date
    Feb 2011
    Location
    Australia sydney
    Posts
    331
    Thank for the reply R88
    I'm gonna leave it was a lil worried and didn't want to distroy the motor

  4. #4
    Sayers's Avatar
    Join Date
    Jul 2010
    Location
    Melbourne AUS
    Posts
    2,300
    +1
    134
    Kiet,
    As Rory has said your okay as is. Read this thread and refer to Donnie's AFR table.
    http://www.greenhulk.net/forums/show...om-The-Experts

    There's also great advice on the differences in AFR readings that Rory mentioned.



    Remember "Lean is mean" (until she goes boom, then it sucks)

  5. #5
    R88ory RXP's Avatar
    Join Date
    Feb 2008
    Location
    Kent, England
    Posts
    2,737
    +1
    46
    Quote Originally Posted by Sayers View Post
    Kiet,
    As Rory has said your okay as is. Read this thread and refer to Donnie's AFR table.
    http://www.greenhulk.net/forums/show...om-The-Experts

    There's also great advice on the differences in AFR readings that Rory mentioned.



    Remember "Lean is mean" (until she goes boom, then it sucks)



    I like that LOL.

    You can get away with lean afrs in the mid range as its not really under any boost at that point so the engine is running kind of like a N/A motor, and AFRs of 13 are normal,

    I woyuld say all is fine, ride it and have fun.

    R88

  6. #6
    Eric Ocman's Avatar
    Join Date
    Aug 2008
    Location
    Cataula, Georgia, United States
    Posts
    4,700
    +1
    77
    With my reflash im running 11.8 idle 13.7 mid then when I nail it it drops to 11.9 to 12.1. Just fine..

  7. #7
    abie_lah's Avatar
    Join Date
    Jul 2009
    Location
    Kuala Terengganu, Malaysia
    Posts
    264
    im also confius with my afr table,,,in wot when rpm go to 8700 afr reading around12.8 and after hit 8750 afr reading 13.1.. my rev cut at 8800rpm,, remap from les cooke,, after i ask him they said its normal after rpm want go to max rev cut,,, and im us it in few race without prob,,,

  8. #8
    Eric Ocman's Avatar
    Join Date
    Aug 2008
    Location
    Cataula, Georgia, United States
    Posts
    4,700
    +1
    77
    Quote Originally Posted by abie_lah View Post
    im also confius with my afr table,,,in wot when rpm go to 8700 afr reading around12.8 and after hit 8750 afr reading 13.1.. my rev cut at 8800rpm,, remap from les cooke,, after i ask him they said its normal after rpm want go to max rev cut,,, and im us it in few race without prob,,,
    Sounds like your ecu is hitting the limiter pulling/timing and fuel. Pretty sure this is normal. Depitch a little.

  9. #9
    dnielsen's Avatar
    Join Date
    May 2008
    Location
    Shreveport, Louisiana
    Posts
    2,018
    +1
    94
    Quote Originally Posted by abie_lah View Post
    im also confius with my afr table,,,in wot when rpm go to 8700 afr reading around12.8 and after hit 8750 afr reading 13.1.. my rev cut at 8800rpm,, remap from les cooke,, after i ask him they said its normal after rpm want go to max rev cut,,, and im us it in few race without prob,,,
    Soon to melt pistons at 12.8-13.1 and 8700+ RPMs!

  10. #10
    Quote Originally Posted by Sayers View Post
    Kiet,
    As Rory has said your okay as is. Read this thread and refer to Donnie's AFR table.
    http://www.greenhulk.net/forums/show...om-The-Experts

    There's also great advice on the differences in AFR readings that Rory mentioned.



    Remember "Lean is mean" (until she goes boom, then it sucks)
    Interesting.

Page 1 of 2 1 2 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. AFR reading???
    By tysonfzr in forum Yamaha PWC Performance (4-stroke)
    Replies: 33
    Last Post: 12-01-2010, 03:19 AM
  2. AFR reading on FZS....
    By OutlawGPR in forum Yamaha PWC Performance (4-stroke)
    Replies: 5
    Last Post: 08-07-2010, 10:03 PM
  3. Where Does Everyone Install There Bung To Take AFR Reading
    By Mik72e in forum 4-Tec Performance
    Replies: 26
    Last Post: 06-02-2009, 04:52 AM
  4. AFR Readings on a Stage 1 + RR/Green Wheel
    By blowbyu in forum 4-Tec Performance
    Replies: 0
    Last Post: 09-18-2008, 08:38 PM
  5. AFR readings
    By skoepp in forum 4-Tec Performance
    Replies: 12
    Last Post: 07-28-2008, 10:16 PM

Posting Permissions

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