Originally Posted by reality
Luke.. you can talk to those people, no offence, but the people I talk to actually write the megasquirt code.. so go figure..
You can do alpha-n in megasquirt, for n/a applications.. you can also do speed pressure (map).. the problem is, the amount of air flowing into an engine when you're using throttle bodies is not directly relative to the amount of boost you see at the map sensor.. eg, you can have the throttle open at different amounts, see the same boost (so same location on the fuel/spark table) but with different airflow.. this is why ECU's such as Pectel have features like "Multi-map".. it's a complex and slow mapping process! Ask any skyline owner!!
I'm not trying to bullshit you, I'm trying to help you with the facts. I didn't just make it up.
edit: manifold looks cool though.. might be worth getting it flow checked before you run it on the car.. to ensure even distribution..
I agree with everything put there.
I believe that whoever Luke has been talking to doesnt fully understand the implications of transient fuelling issues that will arise from the reading you get off the MAP sensor.
If you must have ITB's on your car (i see no point personally) then i would suggest you go MAF as well
Its NOT the peak bhp figure that will suffer, its driveability, so that 300bhp you are quoting Luke means nothing to this debate IMHO