Right.. I saw an interesting comment in there with a reponse..
Question:
Hi @Creator - just made a small 'placeholder' pledge to get more info re compatibility with VW Golf models before committing to a unit.
Some questions please:
1. The unit provides a Bluetooth OBD2 interface compatible with existing apps, so I assume that side of things is exposing an emulated ELM327 command set? What's the PID refresh rate when querying a set of say 10 PIDs?
2. With tuning of a petrol Mk6 2.0L turbo VW Golf I assume you're adjusting boost levels as part of the tune? Does Berry provide a boost reading so that adjusted boost can be monitored via OBD2, given the VW CANGateway doesn't provide MAF or MAP boost on any standard PID? Is this something your hardware provides on the client side interface?
3. You mention that you're not writing to the ECU directly (which would throw TD1 flags and void engine warranty) so are you writing values to the power train CANBus through the Gateway for the ECU to interpret and adapt to? If so is there any issue with data overlap or do you also filter out the original data values from the bus so the ECU doesn't get confused?
This sounds like a great idea - I've just read bad reviews about plug in tuning devices before and want to make sure your unit works fully with my VW before buying. Thanks!
Answer:
@James, all your questions and feedback are appreciated.
1. Correct, we are using a ELM327 emulation. Due to connection established with the ECU from the tune side, the most we usually see is around 50PID's/Second. It simply wasn't possible to achieve anything higher than this.
2. In the exact circumstance of manifold pressure, the readout will not show the modified boost (either max pressure, or rising - Berry may not necessarily modify the max boost pressure). You would need a secondary boost gauge, weather it be analog, or a tee'd digital readout directly off your factory MAP sensor (yes this will work).
3. I understand that having a project through Kickstarter allows consumers to have an in depth, manufacturing story of the product with a great perspective on design, which we believe we have covered pretty well. Unfortunately due to the nature of the product, there is only so much information we can release without compromising the architecture of the circuit and software which remains patented intellectual property.
There is a few 'plug-in' tuners availible, and quite a few bad reviews - with good reason. I think 'Placebo' would be a suitable word. After all, we have set out to revolutionize the market, not put it in reverse.
My response to the above...
1) 50PID's/Second... so.. is that all vehicles? one particular vehicle? Just the one he owns and has tested on?
I know from my own research.. not all ECU's can request live data at the same rate. Although.. an E38 will happily go over 150+PID/s.
Due to connection established with the ECU from the tune side ..... um... what? wtf is the tune side? Does he mean the communication bus or some secret tuning gateway that Iv obviously missed for the past 4years...
2) This response completely neglected the question. He wanted to know about reading boost from the ecu... not hooking up a physical gauge to the MAP sensor. This response indicates no manufacturer specific PIDs are stored in the device or requested.
3) Well, this is the only plausible method of doing this live tuning by faking sensors *assuming* it is separate modules sending live sensor data and not hardwired to the ECU.
But.. giving the benefit of the doubt.. whats the patent?
Please.. someone ask about the patent.. please oh please...