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This is only to be used as a reference, i am not claiming to be part of hondata, and i will not be held responsible for damages from incorrect installation (made with. Hondata modifies standard honda engine computers aka ECUs for use with modified engines or forced induction applications. Hondata s300, Hondata K-PRO KPRO, Hondata FlashPRO are among the most popular solutions offered.
Tuning Track Support Consulting Brewed Motors Tuning Lab is proud to offer support for all ECU's and engine management systems. Click below or contact us for more information about our tuning serivces. Our team of professional technicians and tuners on hand capable of preparing and servicing your race car for any track or circuit event. Please contact us for more details. The Brewed Group is not limited to the Motorsports Industry.
Brewed consulting services are tailored to your organizations' goals for future growth in any market. Hondata S300 v3 wide band O2 sensor wiring and set up instructions. The Hondata S300 has proven to be one of the best “bang for the buck” EMS options for the D, B and H series engines. With the ability to fully control every engine parameter, as well as program in new outputs such as boost control and nitrous, the S300 is a great option for everything from a daily driver to a full blown race car.
In this article we will run you through the Brewed Motorsports preferred method of hooking up a wide band oxygen sensor aka WB O2 or air fuel ratio gauge / monitor. .
Install your wide band O2 kit per the supplied install instructions. Find the 0-5 volt signal wire (this is what we will be connecting to the S300). Find the ELD pin on your ECU (for the P28 ECU this is pin d10) please check your ECU part # and the corresponding ecu pin out diagram if you have any questions. Verify your WB O2 sensor is working correctly (this should be described in the WB O2 manufactures instructions). Find the output voltages versus Lambda graph for you particular WB (this will be in the install or supplied specifications included with your WB).
Connect the 0-5v WB o2 signal wire to the ELD pin on your ECU. Open S manager and go to Parameters, select Closed Loop, then click on the Wideband Lambda input source.
Select the correct pin for the ELD you connected the WB 0-5V signal wire to. Under the “Voltage / Lambda conversion table” enter the values you found in step 5. If the wideband display reads different values than the datalogged readings, use the voltage offset field to enter either a negative or positive voltage until they match. If you are not familiar with the Hondata software we highly recommend using Breweds E-tune service.
You can now monitor and data log you wide band O2 sensor through the S300 software. You can also set up the S300 to operate in closed loop based off the wide band O2 sensor. Now that you have your wideband O2 sensor wired to your ECU you're ready to take some data logs and email to Brewed for our world famous. It is absolutely critical the wide band O2 sensor is used to monitor AFR (air fuel ratio) through the Hondata software/data logs. Check out Brewed Motors and Buddy Club at Bira Circuit in Thailand.
Technical Information S300 Socketing s300 Socketing It is strongly recommended that you have this professionally installed as this is more difficult to install than an s200 and if the ECU has been previously socketed you run an even higher risk of damaging the ECU (lifting tracks and or burning them). Socketing the s300 is very similar to the s100/s200. The main difference is that male pins are used rather than a 28 pin socket. The male pins are supplied with the s300, but for reference the Digikey part number is WM6536-ND Socketing a new ECU:.
Take the ECU circuit board out the ECU case. De-solder IC4, install and solder in the 20 pin 74373 latch.
De-solder J1, install and solder the supplied jumper. De-solder R54, install and solder the supplied resistor. Note: Not all ECUs require this step.
De-solder IC3. De-solder CN2.
Insert the male pins (1 x 4 pin, 2 x 14 pin) into the s300, install into the ECU and solder the pins. Cut J12.
Replace the large capacitor in C14 with the supplied capacitor Socketing an ECU with an existing socket or chip:. Take the ECU circuit board out the ECU case.
De-solder IC3 and remove the socket / ROM. De-solder CN2. Optionally the polarizing tab of the 4 pin connector may be cut off and the existing 4 pin connector utilized. Insert the male pins (1 x 4 pin, 2 x 14 pin) into the s300, install into the ECU and solder the pins. Cut J12.
Replace the large capacitor in C14 with the supplied capacitor Care must be taken when de-soldering not to lift tracks on the ECU circuit board. S300j Socketing It is strongly recommended that you have this professionally installed as this is more difficult to install than an s200 and if the ECU has been previously socketed you run an even higher risk of damaging the ECU (lifting tracks and or burning them).
Socketing the s300j is very similar to the s100/s200. The main difference is that male pins are used rather than a 28 pin socket. The male pins are supplied with the s300, but for reference the Digikey part number is WM6536-ND Socketing a new ECU:. Take the ECU circuit board out the ECU case. De-solder IC4, install and solder on the 20 pin 373 latch. Install and solder a jumper across J1 on the back of the ECU.
De-solder IC3. De-solder CN2. Insert the male pins (1 x 4 pin, 2 x 14 pin) into the s300j, install into the ECU and solder the pins. Remove J4.
Replace the large capacitor in C27 with the supplied capacitor Socketing an ECU with an existing socket or chip:. Take the ECU circuit board out the ECU case. De-solder IC3 and remove the socket / ROM. De-solder CN2. Optionally the polarizing tab of the 4 pin connector may be cut off and the existing 4 pin connector utilized. Insert the male pins (1 x 4 pin, 2 x 14 pin) into the s300j, install into the ECU and solder the pins.
Remove J4. Replace the large capacitor in C27 with the supplied capacitor Care must be taken when de-soldering not to lift tracks on the ECU circuit board. The case must also be cut as shown below: Before After Before After Make sure that when the Knock board is placed back in the ECU that the ribbon cable is bent out of the way so that it is not crimped or broken.