Hondata

Hello all... I'm looking to use the KPRO for my turbo s2000 project.

I am running a F20C with a stock bottom end, 3mm HG, fully build Joe Alaniz head with 1mm oversized exh. valves, AP1 Intake Cam, AP2 Exhaust Cam, 70mm BDL Throttle Body, and a custom upgraded fuel system.

I plan on running 2 boost settings... 15psi for everyday driving and 21+ for high boost. I have a mac solenoid for boost control. I also have an AEM Peak and Hold injector driver for my 1000cc Precision injectors. And an AEM Wideband AF gauge.

Is there anyway to use the AEM wideband in conjunction with the KPRO? I know the KPRO can be used for boost control but can it support 2 boost settings? If I want wideband support for the KPRO is it better to use a standalone wideband like the AEM or swap out the stock S2000 O2 with the wideband sensor from the RSX?

I'm new to this Hondata stuff so I appreciate all the help I can get. Thanks in advance!

The KPro has a high and low boost setting. Running two ECUs would not be a significant advantage, and would be a lot of wiring.
The RSX o2 sensor is expensive - it is about the same price to purchase an aftermarket wideband with a sensor as the RSX sensor alone. We recommend a wideband which can produce a 0-5V wideband output and a narrowband output at the same time, so that the ECU can run in closed loop and the lambda be datalogged as well.

Hondata wrote:The KPro has a high and low boost setting. Running two ECUs would not be a significant advantage, and would be a lot of wiring.
The RSX o2 sensor is expensive - it is about the same price to purchase an aftermarket wideband with a sensor as the RSX sensor alone. We recommend a wideband which can produce a 0-5V wideband output and a narrowband output at the same time, so that the ECU can run in closed loop and the lambda be datalogged as well.

Thanks for the reply. I must have mis-typed my question as I wasn't trying to ask about running 2 ECUs. What I meant was running the KPRO ECU and the AEM Gauge Type Wideband controller. It is an aftermarket wideband setup. Is the AEM the wideband you reccomend or is there another one that works better with the Hondata?

I also have an Aquamist Water/Meth injection system and want to set it up where the low boost tune is what im running when the WI system is off, but if I engauge the water/meth it tells the ECU to switch to the high boost setting. How would one go about doing this? The aquamist has an output for switching maps on the ECU...

another question I have is do you reccomend P&H injectors used along with a P&H driver such as the AEM... or do you suggest saturated injectors?

Sorry, I mis-read your post. The AEM wideband should work as long as you keep the stock S2000 narrowband, and don't try to use the narrowband output from the AEM. The AEM has a wideband output which you can feed into the RSX ECU, usually via the ELD input.

You can set up a common input (usually VTEC pressure) used to switch both the boost controller from low to high boost and also switch on the water injection.

Finally, we usually use high impedance injectors, but the P&H injectors should work with the AEM driver.

Hondata wrote:Sorry, I mis-read your post. The AEM wideband should work as long as you keep the stock S2000 narrowband, and don't try to use the narrowband output from the AEM. The AEM has a wideband output which you can feed into the RSX ECU, usually via the ELD input.

You can set up a common input (usually VTEC pressure) used to switch both the boost controller from low to high boost and also switch on the water injection.

Finally, we usually use high impedance injectors, but the P&H injectors should work with the AEM driver.

Thanks for all the answers! Looking forward to going KPRO. I am going to be needing to run 1000cc injectors for my power goals and have heard they wont idle well since they are so large unless you run P&H Injectors with a P&H driver... is this true or would 1000cc high impedance work fine?

If you set the injector delay / dead time, then high impedance 1000 cc injectors will idle correctly.

Hondata wrote:If you set the injector delay / dead time, then high impedance 1000 cc injectors will idle correctly.

cool! I appreciate all the helpful answers... thats one thing I have heard and now am seeing about Hondata, EXTREMELY knowledgable and helpful staff.

So if I was to go with 1000cc High Impedence injectors instead of the P&H could someone on here explain / help me set the injector delay correctly to make them idle smoothly?

Sometimes the manufacturer of the injector can provide the opening times (sometimes called dead time, lag time or voltage offset).

There is a fairly extensive chart here but note that the times listed on that chart do not exactly match what Honda uses for stock injectors.

Hondata wrote:Sometimes the manufacturer of the injector can provide the opening times (sometimes called dead time, lag time or voltage offset).

There is a fairly extensive chart here but note that the times listed on that chart do not exactly match what Honda uses for stock injectors.

The injectors I would want to use are the Bosch 1000cc Saturated.

This is the chart the manufacturer provides with them... so with that info I could adjust somewhere in the KPRO and it would idle well even though they are so large?

Yes, you can enter the number into KPro for whatever fuel pressure you are using. However, the dead time for those injectors is fairly large (around 1 ms at 14V). Typical dead times are 0.6-0.7ms for high impedance injectors and 0.5ms for low impedance. It may take a little experimentation to get the flow just right.

alot of s2000 turbo owners use the OEM oil pressure sensor location to mount their oil feed line for the turbo. They usually eliminate the oil sensor since it is just a dummy light switch and not really needed. With the hondata is eliminating this oil pressure sensor possible or will it throw a CEL all the time?

The engine oil pressure warning light is not connected to the ECU.

very interesting to note -

my oil pressure light still seems to be working? it comes on with the ignition on and the motor off, then disappears once the motor starts up. i still have it connected, should i remove it from the setup altogether?

don't forget cam gears for your setup to redial cams correctly (using thicket head gasket)