Haybusa Parts and Service Member Support
« previous next »
Pages: [1]   Go Down

Author Topic: Yosh Box vs 1397  (Read 3354 times)

Offline KSpecII

  • Rider
  • ***
  • Posts: 439
  • Gender: Male
  • Black & Blue is the fastest color
Yosh Box vs 1397
« on: August 16, 2008, 05:01:53 AM »
Just wondering if the Yosh Box is able to adjust for the fuel requirements of a 13.1 CR 1397?  :?:

Logged

Offline Johnnnycheese

  • Post Master
  • *****
  • Posts: 1916
Re: Yosh Box vs 1397
« Reply #1 on: August 16, 2008, 06:24:04 AM »
yes and no
Logged
Official Site Tuner
Builder and tuner of some of the FASTEST motorcycle in the world
www.johnnycheese.com

Offline glenn71

  • Post Master
  • *****
  • Posts: 1102
  • Gen 1 stock length allmotor tragic
Re: Yosh Box vs 1397
« Reply #2 on: August 16, 2008, 09:41:31 AM »
Maybe if you wind up the fuel pressure as well.Why go to the trouble of putting a 1397 in and doing such a basic tune.Get a pc or get the ecu tuned properly.
Logged
Gen1 the original and the best
8.76@165.42mph so far

Offline PetriK

  • ECU Guru
  • Post Master
  • *****
  • Posts: 1035
  • Gender: Male
  • Where am I?
Re: Yosh Box vs 1397
« Reply #3 on: August 16, 2008, 11:58:26 AM »
Have tried - no way to get the bike driveable. The Yoshbox can only tune according to throttle, the pipe, cams and other changes mean that the AFR curve will change with RPM. You will get very rich bottom end at any TPS position, and that is where you propably spend quite a lot of time if not racing only.

Second with Glenn71, get the ecu mapped properly or if not possible go for rapidbike or pc.

Logged

Offline KSpecII

  • Rider
  • ***
  • Posts: 439
  • Gender: Male
  • Black & Blue is the fastest color
Re: Yosh Box vs 1397
« Reply #4 on: August 16, 2008, 07:36:28 PM »
Quote from: PetriK on August 16, 2008, 11:58:26 AM
Have tried - no way to get the bike driveable. The Yoshbox can only tune according to throttle, the pipe, cams and other changes mean that the AFR curve will change with RPM. You will get very rich bottom end at any TPS position, and that is where you propably spend quite a lot of time if not racing only.

Second with Glenn71, get the ecu mapped properly or if not possible go for rapidbike or pc.



This is just a thought anyway. great to hear from someone who have tried it.

Also wondering, doesn't the other knob on the yosh box, have any effect on the low end driveability?

Just interested to know if it is even possible to get a proper tune to the bike with it.
Logged

Offline PetriK

  • ECU Guru
  • Post Master
  • *****
  • Posts: 1035
  • Gender: Male
  • Where am I?
Re: Yosh Box vs 1397
« Reply #5 on: August 16, 2008, 10:24:20 PM »
You can choose the TPS positions with Yoshbox, but on a steady TPS position you always will have several RPM positions which can not be tuned. When modifying a bike the RPM positions are changing.

You can consider that e.g. 100% TPS you give +10%. That changes all RPM positions from 2000-10800. Your bike at around 3000-5000 will be too rich, also at 8000 too rich but 9-10800ok.  You then tune for 25% TPS and give -10%. Your bike at around 3000-5000 will be ok, but way too lean at 9-10800.

You really should tune by reflashing the ECU, there is a lot of free 1397 maps floating around already now.
Logged

Offline Stocker64

  • Post Whore
  • ****
  • Posts: 888
  • Gender: Male
Re: Yosh Box vs 1397
« Reply #6 on: August 17, 2008, 06:33:26 AM »
map shareing :thumb:
Logged
09 BUSA, PROBLEMCHILD II.... tuned with the factory ecu by ME!! thanks PETRIK, ridgeracer,and SMITHBUSA. ...  "FAMILY FIRST"...

Offline KSpecII

  • Rider
  • ***
  • Posts: 439
  • Gender: Male
  • Black & Blue is the fastest color
Re: Yosh Box vs 1397
« Reply #7 on: August 17, 2008, 06:35:15 AM »
does anyone know how to get pc3 maps to work with the older pc2?
Logged

Offline Johnnnycheese

  • Post Master
  • *****
  • Posts: 1916
Re: Yosh Box vs 1397
« Reply #8 on: August 17, 2008, 09:03:24 AM »
Quote from: KSpecBusa on August 17, 2008, 06:35:15 AM
does anyone know how to get pc3 maps to work with the older pc2?
you can not convert them the pc2 was changing sensor reading
 the pc3 changes injector pluse time
Logged
Official Site Tuner
Builder and tuner of some of the FASTEST motorcycle in the world
www.johnnycheese.com

Offline KSpecII

  • Rider
  • ***
  • Posts: 439
  • Gender: Male
  • Black & Blue is the fastest color
Re: Yosh Box vs 1397
« Reply #9 on: August 18, 2008, 07:51:53 AM »
Quote from: Johnnnycheese on August 17, 2008, 09:03:24 AM
Quote from: KSpecBusa on August 17, 2008, 06:35:15 AM
does anyone know how to get pc3 maps to work with the older pc2?
you can not convert them the pc2 was changing sensor reading
 the pc3 changes injector pluse time

what about from pc2 to pc3 map... I remember reading about that before..
Logged
Pages: [1]   Go Up
« previous next »