The whole point of an ECU is to provide control. By removing this control and running more boost with an MBC, the ECU has NO IDEA WHATSOEVER of what boost is running (it only sees say 21psi) and fuels accordingly (based on this knowledge). Instead, you're running more. Your fueling and timing are only correct until you reach the limit. Once you go over, you're going blind.
I agree to a point.
All the fuel maps would have have to be enriched to a point where it is scaled as if you are running the amount of boost you are actually running as well as timing etc.
I don't see how this would be going blind, you can still datalog and run EGT, AIT, AFR, Boost, and knock gauges in the cabin to tell you what everything is at. You can even set up warning lamps/sounds with the gauges to indicate something is past what it should be so you don't have to constantly stair at the gauge pods while driving.
Please correct me, however I don't see how this is a "wrong" way of doing things. Regardless, I am going to see what I can do to play around with the NefMoto software etc seeing that if I want the ecu to do all the work and pay less money (400 bucks is still not cheap in comparison) I should have gone this route in the first place. Honestly I think that eurodyne - based on my findings here is false advertising as it says it is a one stop shop for tuning, it is not. It is not a replacement for a stand alone as a lot of people are saying and as it makes it sound like...
I still don't get how Chris Green of USP Motorsports was able to run this pas at 30 psi without changing either the controller as I have posted or changing out the map sensor. It is pretty false advertising if they say it was done as Eurodyne is currently. If there is a map that is already been adjusted for a 4 bar sensor then why doesn't Chris Tapp make that readily available to download right away- or make that an option that YES I am running a 3- or 4 bar sensor.... and then the map simply changes, it really would not be a lot of work in the long run.
http://www.eurodyne.ca/usp-motorsports-mk4-jetta-gli-w-ie-cams-on-the-dyno-making-601whp/Hi xxx,
Thanks for your email. CM5/CM5-LT do support PID boost control (which would allow you to relieve the Me7 of this duty) but this feature is not supported by our TorqTune PC software. It will be in a few months and it was a while ago, but the users found it too difficult to play with the P I and D values so we needed to take a step back and work on releasing a simple wizard people can use to get up and running quickly without getting a PhD in PIDs.
Having said that everything you noted is correct except that the CM5-LT cannot drive a fuel pump. Only a CM5 can drive a TTRS pump in addition to a W/M pump.
However, I would be surprised if Eurodyne would not be able to help you with getting a 4-bar to work with your Meastro package. Honestely, your best bet would be to persist in trying to get a hold of Chris at Eurodyne and get his take on the best way to do this.
Let me know if you need any additional details on the CM5/CM5-LT.
Alex
Torqbyte.com