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Post Info TOPIC: Remove deceleration fuel cut off for 32 bit Gen 1 Hayabusa


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Remove deceleration fuel cut off for 32 bit Gen 1 Hayabusa


Hi,

Since last year my 2nd bike is a 05' Hayabusa, with the informations of this forum I flashed my 32920-24FJ0 ecu with personnal derestricted 32920-24FG0 maps.

I'm very happy but I wish to remove the fuel deceleration cut off for perfect throttle.

 

Could you help me please?

 

 

Thanks in advance.



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You could arrange this by tuning the IAP fuel map. But why? If you are experiencing an rough ride, my advice would be look into the switching points from the IAP to TPS maps. This is very crucial in the tuning proces!

I am happy to assist you in the process if needed!

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Thanks you very much Wiebren,

I am very happy if you can help me for understand the ECU functions and solve my running issues.

For your information my 05' Hayabusa is modified (little airbox mod, Akrapovic 4-2-1 exhaust, BMC filter, PAIR systeme is removed) and seem to run too lean at idle rpm /low throttle and wide throttle (causing by the little air box mod).

 

My next project is to replace the stock injectors by RX8 350cc/min red injectors with 12 holes for a better fuel atomisation.

 



-- Edited by Ron_s on Saturday 16th of November 2019 01:25:53 AM

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This sound like Low RPM/ Throttle (<10%) IAP fueling. So changing the TPS does not effect this. 

What system/Module are you using to verify the Fuel air ratio? Boost by smith or woolich eg.

If you have the option to log highspeed, I would recommend to do some logging and verify the mixture in the IAP maps. 



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Thanks Wiebren for your answer.

I have no fuel ratio system to check A/F (It is in my To Do List, I have to find info to buy correct data logging equipments), I hear simply the engine struggling at Idle idle\low rpm.


Could I extract from the ECU the real throttle voltage from 0% to 100% to tune the TPS very accurancy (the Suzuki method seem not to be very accurate)?



-- Edited by Ron_s on Thursday 21st of November 2019 01:42:52 PM

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Yes, this is possible with Ecueditor. in the datalogger screen and the engine data field. What did you use to flash the ECU with? (connector)

Please do not buy the Boostbysmith unit. This is advertised as high speed logging capability but is too slow to use. For the AF, any wideband would be perfect. I am using the AEM unit which is simple to hookup to your ECU and do the autotuning (so no more guessing, the program suggests all the improvements.

Currently I am writing a GSXR/Ecueditor tuning manual with all the pin-outs, tips and tricks to get people up to speed. I also designed my own flashing unit (based on earlier forum work) which can do the high speed logging! This units is finished but I need to have the GSXR connectors :) Keep everyone posted!

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Hi,

I flash the Busa ECU with the follow wiring loom and Flash Development Toolkit software:

 

busa flash.jpg

 

I use a connector "Te Connectivity / Amp 4-1437290-0 34WAY" and two individial pins for 48 and 54.

 

Could you give me me how to use your AEM unit for data logging my Hayabusa?

 



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