Hondata

Here are three datalogs, two are long ones of me cruising around to show it datalogs plenty fine under normal conditions out of vtec, but as soon as I punch it and it crosses into vtec you will see it just stop. There is also a very short datalog of me just doing a quick pull to show this faster. Also im not experienced enough to understand the graphs to tell you if you can see the hesitation or not, but when I rev up as soon as it nears the crossover point it starts to hesitate almost like a soft rev limit, you can push past it eventually and it starts to go again. But it is struggling to build any boost now because it will not accelerate smoothly. the tune I am on is a 300hp @ 16psi on 91/93 octane pump gas here in Colorado. I use RC 750cc injectors. The tune has always ran rich in my opinion.

I didn't have this issue until I took it in to trace an electrical draw wiring issue. The performance shop who is also my current tuner said that they had to rewire the VTEC relay to the ecu. I didn't find anything wrong with it before as VTEC engaged flawlessly before. And now it is having all sorts of issues. Also I don't like the way they did it. The first installers of the original relay made it look stock in the wire harness, this new one is just a bright orange wire running from the solenoid, through the firewall along the wire harness, and into a cube brick thing (honestly no clue what it is) which then runs to the ecu (from what I can tell at least, that's where I trace the orange wire)

Also, I had to erase my ecu today and reload this tune in just so it would run correctly. Not sure what it was doing but it was running awful and stalling a lot in idle. It wouldn't let me load any other tunes (even the smanager stock tunes) so I did what the help file suggested and erased. It actually failed the first time, but trying immediately after it erased. I reloaded and it ran much smoother. Not sure if this is related or not to the hesitation issue or something completely different, but it does still hesitate a lot.

(NOTE: the hesitation seems to go away nearly or completely away after the engine reaches its normal operating temp. But I still cannot datalog. And vtec also kicks loud without much power. Im wondering if the relay they did is bad, or if this is a sign my solenoid is bad.

Help.
WaZe

i had a thought today. Since the relay is on the ACC I decided I would test the ACC output via smanager. Wouldn't you know it, as soon as I trigger it, the laptop disconnects from the ecu. I tried adjusting the ACC parameters so that they would not trigger the clutch as often but this proved to be no help, in either direction. (at idle, or beyond redline). It definitely has something to do with VTEC relay at this point in my opinion. Any thoughts? HONDATA?

So does this car still have AC?

It does not. It used to be wired from the radiator fan control or something but the new place changed that this time around

The problem is most likely due to the relay that they used. Make sure that a relay with a diode was used. You may want to take it back and tell them that you are having more problems now that they worked on it. The other option would be to take it to a shop that is more familiar with the wiring of Hondas and have them take a look and try to fix the work the other shop did.

Ok thanks. I had a feeling that might be my only option.