Hondata

Yea it was a bit of a nightmare. The plan is to eventually get the Artec Manifold and a 3076. Thanks, honestly the bay is pretty trashed because I daily it :p

Highly doubt it, I had fully removed the head once, and re assembled the entire valve train twice when troubleshooting this before swapping cams.

Just to update the thread, the issue was related to using Tuner1 Cams with a Log Style manifold. Too much back pressure or something causing problems hitting VTEC. Switched to GSR cams and the issue was fixed.

If that's the case do I need to add an additional ground near the block/ VTEC solenoid or is there a short in my wiring harness. This is a new rywire harness.

I have not been able to test my ECU in another car but I was able to test my calibrations with a different s300 and the same issue occurred.



Here is a video of a second gear pull with the car refusing to increase rpm/speed at the VTEC engagement point.
https://drive.google.com/file/d ...

Sorry to try and revive this thread, but I have still been unable to get this fixed. I took apart the head today and inspected the entire valvetrain and ensured none of the rockers were stuck or jammed. I also ensured that there was sufficient oil pressure at the head when VTEC tries to engage ...

This is a new kit from Digidizzy but the issues started before I installed this COP kit. The only reason I purchased and installed the cop kit was to rule out ignition / sensor related issues.

After replacing the stock dizzy with a digidizzy the issues persisted.

I have attached two config files that we tried as well as datalogs with their respective tunes
The difference between the config files is that we lowered the requirements for vtec and changed the rpm
We found that the "Rev limit" moved to wherever vtec was set at.

Please let me know if you have ...

Yes When it was NA it was able to hit VTEC with no issues

As Requested

NGK 4644

https://www.ngk.com/ngk-4644-bkr7e-v-power-spark-plug

Resistor style

I moved the Ground as suggested and am still having the same issue,

Sorry I forgot to include that one, but it is present, I have attached an additional picture of my engine bay where you can see it.

As Requested here are my grounds.