Hondata

I asked CHATGPT to assist in tuning my fuel tables to get my car running properly since I am in Japan with little to no help. Originally my AFR from 3000-8000rpm were stagnant at about 11.5:1. Too low right? I have a completely stock K20A DC5 Type R engine with 6spd transmission. Injectors are 310cc ...

problem solved:

JDM k20a dc5 harnesses sometimes have this and i am unsure why, but to anyone in the future looking at this and realizing they have the same JDM engine harness, please reconnect the vss wire to the ecu connector and you should be able to read speed in Kpro.

Problem solved:

Fuel rail ground for the ecu came loose and made the main relay make a buzzing sound.
all is well and operable.

I noticed that as well, however one thing that caught my eye is the IGN it suddenly dropped down to -10 at about 8500-8600 rpm. Is this also abnormal?

Engine : JDM K20A (DC5 Type R)
Transmission: K20A (DC5 Type R)

Today I was trying to check to see if my car was running right before I take it to the dyno, turns out it was not ready....I decided to do two runs at WOT first one went well no issues. The second one, The tachometer had a mind of its ...

I think I found the break in the wiring. This is the A connector and the wiring with a cap on it is white/green The speedometer c101 white/green wire passes through and works, but going to the ecu there is this break. This cap should NOT be here correct?

How should i reconnect this wire into the ...

OK. Ill trace it today. However, if I have two of the same ecu and only one displays a p0500 code wouldnt that mean this ecu is bad? Is it possible to have faulty wiring and not get a p0500 code, because i didnt have this code when i used a stock PRC ecu..

I do not have access to another vehicle. Could it be a faulty ECU?
Is there anyway to verify vss voltage in kpro?

This is the actual calibration used for the 2nd datalog i sent... labeled (gtrg.kdl)

Here is an updated log using the K20A2 Calibration with stock itr cams and shows when the vss speed appears.

Calibration used was K20a-itr.kal

I have attached some data along to show the issue i am having..

It will read 3mph and just stop and hold there.... I see this is quite a common issue, but I am unsure how to diagnose it. The gear ratios match my type r transmission. In MISC I chose the normal speed sensor, so I am not sure what next step I should take...

How would I confirm if the VSS is wired ...

Hi everyone....I have a 98 Spec JDM DC2R, and I have two PRC ECU's one is PRC-013(No KPRO) and one is PRC-023(K PRO v4).

I recently did a K swap (02-04 DC5R full swap harness trans...everything) When I used the non KPRO v4 ECU, I had a p0141 code and p0600 code. To remove these codes I bought a PRC ...