Hondata

Hey guys,

Recently my car broke down due to bad fuel / timing issues. I have had the head off, timing redone, and everything put back to spec.

To my dismay, the car is not running properly on the previous tune, and has started throwing Code 9 CYP, and struggling past 3-4k RPM

I dug further and noticed the stock MAP was not reading right, so I adjusted the offset into the negative so it's sitting at 30-40kPa @ idle.

As well, I adjusted the TPS max/min settings just in case.

Car is as follows:

H22A OBD2 Engine from a 1997 Prelude Type S (ATTS Deleted)
S300 v3 OBD1 ECU
OBD2 > OBD1 jumper harness
OBD2 TD77U Distributer (have tried 2 so far, same Code 9)
New plugs
New fuel filter
New head gasket
New timing kit + manual tensioner


Car runs and idles perfectly, anything above 3k with more than 20~% throttle it hesitates.

Here are the logs and current map (Closed Loop on so I could get it to drive), will also include previous map before the breakdown.
Any ideas would be appreciated.

If you have a stock MAP sensor you should not have to make any adjustments to the scalar or offset. If you do then you need to use a new MAP sensor.

Tried a new stock MAP sensor, still reading high numbers like the original one, offset still applies (-250 mBar so it idles correctly on the map)

Try flipping the white and blue wires on the distributor the CYP wires . I’m having same issue on this H2B I flip the wires to time the engine then flip them no codes it’s weird .

JDMCRX wrote: Sun Sep 26, 2021 6:15 am Try flipping the white and blue wires on the distributor the CYP wires . I’m having same issue on this H2B I flip the wires to time the engine then flip them no codes it’s weird .

So flip the wires on the 2 plug?