Quote:
Originally Posted by Tim Radley
I'm not aware of any threads talking about it but most oem ecu's on a performance car i've ever measured in this way runs different cylinder maps or at least offset tables for each cylinder for both ignition and fuel. This is why aftermarket ecu's with a single table for fuel and also for ignition often run pretty badly at idle and transient compared to oem.
I'm running a Motec ecu on my GT86 with 4 lambda's (one per header) and its very clear just how bad the intake and exhaust paths are and the amount of difference required. Its not a constant offset either, amounts cross over. If you measure each intake runner and exhaust runner length they all have a different total overall tuned length so it's not surprising at all.
When will pricing and completion date be confirmed on this?
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AFAIK the stock setup only varies the ignition timing per cylinder, and even that is just cylinders A + B that are equally retarded IIRC (might be C and D). ECUtek has per cylinder fueling trims in the RaceROM upgrade but they are all the same, leading me to believe that this is how it is stock.
Is there any way you can publish the data on the cylinders and what you found?
OT but Tim are you in the UK? I guess if you're running a Motec then you've a little more than a standard car.