Pretty much anything not original equipment.
Emerald, DTA, Megasquirt, AEM, Omex etc.
Well I have had extensive correspondence with Emerald and DTA and neither of them recommend use of there ECU's without extensive modifications.
Why are they "not recommended" and what level of modifications would then justify the use of these systems.
Else I struggle to understand what point you are attempting to portray.
Bare in mind I have calibrated all of the above (and the rest) and do not see a concern with them, except a difference in price, when new.
Ported head, high lift cams, ITB's and Tube exhaust manifold.
I was saying that from what I had been told by those ECU people that unless you did the above mods they would not recommend the use of their ECU's.
Now if you can tell me they are giving me duff information about their own products.......
I speak to the good people at Emerald regualry on their products, and they have never given me "duff" infomation be it Leoni, Karl or Dave. And it does not matter if it is a VAG product or a Jap.
It could come down to cost. On a std car with high levels of vacuum on idle the cost of a new ECU ~£550-600 plus map sensor, loom integration, plus mapping/dyno time, to deliver the improved drive feel may not be justifiable.
Or if the vehicle has a requirement for a 3 way catalyst (which needs lambda control to regulate between 14.1-15.0 AFR), this could be another cause for your response.
In terms of the system and delivering a calibration from a MD3K, K3 or K6 running a OE ABF motor, not a problem with map compensation. It can also be done on alpha_n mode but the some load sites would not follow the actual manifold filling for a given air density.
It has been done before, in fact in the base tables there is a VW16v base cal that was created on a vehicle that belonged to one of my friends.
If the powertrain is std and the ECU can work in some speed density arrangement, I can deliver the same calibration philosophy on an emerald system as I would on a DTA S or EXP series, OMEX 600 and Megasquirt V3x
If the engine was modified where there was little manifold vacuum, as in the case of big cams and throttles, then yes the default alpha-N algorithm can be used, making the ECU hardware cheaper (no map sensor is required).
I have also used Emerald products on STD R32 NASP motors with no issuses, including intake VVT control, once again with map compensation, so semi speed density.
The point is they can work very well on "pretty much OEM powertrains"
