Hondata

Hi all, Aussie here so hopefully I successfully translate our engine codes, etc to the USDM ones.

I have a 1991 Honda CRX. Originally had a D16a8 motor with ODB0. I've swapped in a B18c2 from a VTi-R Integra (your B18c1 from a GSR). I have used a RyWire conversion kit to convert to OBD1. This includes the distributor. I initially received the wrong distributor conversion harness and had a new one sent out. This may be relevant later but from the check I have done it appears to be correct now.

I was originally running a P72 ECU. Due to the car being right hand drive the original dual runner intake was not going to work without some major screwing about due to the location of the fuel filter, clutch cable and a few other bits poking out of the firewall where the TB should have been. As such I went to a Skunk2 Type R style intake manifold. I have a slighter larger throttle body and custom exhaust but no other internal work but the fact I don't have the secondary intake runners anymore is probably the most important piece of information.

I ordered a v3/white S300 Hondata in a JDM P72 from Speed Factory. Despite waiting for it to come into stock before making the purchase after being mucked about a bit I was advised they couldn't source another P72. I was offerred a P30 for the Hondata to come in and as I wasn't going to be running the dual runner intake I have accepted this.

I've finally got around to booting up the Hondata and getting the engine to run right (basically identifying and fault correcting the pre-existing issues). At present the car is going 100% on the P72 ecu, no codes, no faults, full rev range, vtec, nothing I can fault at all. However when I switch over to the P30 with the Hondata it throws a Code 4 (Crank Angle Sensor) and it is in limp mode and wont go over 3500.

My engine is from a 1995 model and I can't see any sensor on the pulley side so I am happy that I have the model where the sensor is in the distributor. I have attempted to check the RyWire conversion for the distributor with both ecu and a variety of configurations of de-pinning wires to cause faults that I expect. I get the CEL/codes I expect on the P72 with things disconnected by the P30/Hondata always just comes back with the Code 4.

As the P72 is having no issues at all I am convinced that mechanically the car is fine and the sensor is working correctly but it is moreso something to do with the ECU/Hondata or my tune. I loaded the BaseMap for a B18c(r) given I don't have the GSR Intake Manifold but other than that haven't made any modifications to the map.

Can anyone offer any suggestions here? I'm not hugely knowledgeable on wiring and a total noob to tuning but get by with google/forum searches so far, I just take a while to figure things out. So with that try to dumb things down a bit!

Thanks in advance.

It sounds like there may be a problem with the p30 ECU being used. You should remove the jumper on J4 and try it in stock form to see if it gets the same error.

I have no bridge across J4 (see attachment). Its blank. And I didn't install the Hondata but in looking up what you meant it read as if this is supposed to be removed. Is that correct?

I'm sorry, you must remove the jumper on the bottom of the ECU at J1 to return the ECU to stock.

If J4 is already removed, just leave J4 alone.

Thanks mate. Did that and confirmed the Hondata linked to the computer but wasnt logging anything (so had power to be recognised but no values when i pressed the lightening bolt).

I still got code 4 (plus 20 and 36). I took the car out this morning with the oem ecu and it was 100% so its definitely this ecu or how the hondata was installed.

As an admin do you have any advice on rectifying this seeing as I'm in Australia and it came from USA? Or have I simply been screwed?

From Help, About, what is the version of software you are using?

2.6.6.0

I would recommend that you contact Speed Factory about this as it could be an installation issue.