FK8 (Stock) Wastegate Actuator Calibration Spec.

[RCR-FK8]

I was wondering if anyone knows the Idle and Command (mm) specs of the FK8's stock actuator settings? If not would anyone mind running a data log
showing the following items at the requested states - WGCMD & WG

1. Idle
2. Command
3. Cycle test of key On engine off

Any help is GREATLY appreciated upfront, as I am trying to trouble shoot a bad calibration and I can't find any documentation what so ever regarding the data of Stock Settings Related to this.

[Hondata]

It self calibrates every time you switch on the ignition. There's no setting in the calibration that can change the distance or behavior.

If there is a problem (you have not specified your setup or what problem you are trying to fix) then if you have a stock turbo/wastegate then the wires are damaged / broken. If you have an aftermarket turbo then either the range or adjustment of the waste gate is wrong.

[RCR-FK8]

I apologize.

So the issue has been narrowed down to a possible failure with the waster gate actuator on a drop-in upgrade turbo setup (Manufacturer specs - https://www.rampagefab.com/product-page ... vic-type-r) recently added. Reason being the turbo builds boost be it seems the waste gate is functioning but out of range as you suggested. As I have spent the prior weekend testing and data logging has shown to have finding that the actuator is cycling (so it works), but is for some reason getting either caught open, stuck closed at odd times or out of range to where it can't build boost correctly as a normal gradual means. It bounces up, down, not at all, and back again. I have test the sensors and had a shop do a diagnostic to confirm ALL sensors are correct and functioning at normal.

Setup

PRL HVIntake
PRL Turbo Inlet Upgrade
Injen Intercooler
HKS Piping Upgrade Kit
aFe Power 3' Mid Pipe
aFe Power 3' Down Pipe
Custom Fab. 3' inlet --> 5' outlet (2 Pipe) Exhaust
Rampage Fab. RS-450 Turbo Upgrade
Hondata FlashPro (Current Tune - Rampage Rev. 1.0 - Dereck Robinson)
Full-Race Alum. Radiator

[Hondata]

The linear travel has to be identical as stock. The closed position has to be identical as stock.

[RCR-FK8]

Ok, and so I guess that doesn't really state what I am looking for as an answer so I guess maybe I asked the question incorrectly. What I am (Thinking) I would like to know is if there is any way to get to that "Stock" spec of "linear travel", could that be done using flashpro with some sort of reference material or date you might be privy to? I guess what I have found and s super tedious as far as process goies is that if I watch WG and WGCMD while cranking the tension assembly on the waste gate and then back and forth between it and that flashpro data, is it possible to get to that point of "stock" ? If so what is the correct readings I would be getting to confirm this cross reference ?

I do know that the two (WG and WGCMD) must correlate no more than .0 -.2 mm apart to be in line with the Unknown IDLE and Command state spec, whatever that is or isnt?

[Hondata]

You can't use the position from the software, because the first thing the ECU does it run the wastegate to the end of travel and reset its zero point. So you can change the wastegate position and travel and it will still say 0mm when closed and 8mm when open.

You have to do this mechanically.

One thing I can say is that it can be made to work. We have tuned a few after market turbos that work fine without any errors.

[RCR-FK8]

OK. Well It seems to want to boost at first attempt WOT, however the next attempt seems to be like it is stuck open or as the boost drops significantly to 4-5 PSI until you turn the car off and let the cycle of the waste gate return to the off position. I just want to know how to get it back to normal....and not behave the way it has been since. That said, your answer is Honda Dealer fix only?

[Hondata]

No, the Honda dealer will not know what to do.

It is something that requires comparing the stock turbo and new turbo and making the wastegate actuator position and range of motion the same on each. I've no idea if that is adjustable on your setup or if the wastegate range is the same. It's really something that the kit manufacturer needs to answer.