Map for adaptronic e420c on a Bigport 4AGE with quad throttles and Coil over plug ign

[regginblack]

Hey guys,
Need to find a map for my adaptronic e420c, the motor is a Bigport 4AGE with quad throttles and Coil over plug ignition.
Thanks heaps
Kumar

[Duk]

If you haven't done so already, join the Adaptronic forum. There are some very helpful guys over there and Andy from Adaptronic could probably help you out.
I got a map for 1 of my cars from a guy in Sweden, off the forum.

[The Witzl]

.... get a tuna?


Even if you get a map off somebody, i would still HIGHLY recommend getting a professional tuner to give your engine a good tune with the Adaptronic.
I spent a LOT of time tuning my old 18RGE with a Megasquirt ECU, and after months and month i still never got it "good". A few hundred bucks with a tuner and it would've been done and dusted in a day.



Another thing - if you have quad throttles, you might want to install a "manifold vacuum block" to give the ECU a nice stable MAP sensor vacuum line.
In a normal EFi engine, you have a large plenum in which intake manifold pressure can stabilise across all cylinders, giving a clean MAP signal to the ECU at low RPM.
With quad throttles, your MAP sensor vacuum line is most likely going to a vacuum port on just one cylinder, and at low RPM, the manifold pressure will be all over the place, and you'll never be able to get the engine running well or tuned properly at low RPM.

These vacuum collectors take a vacuum line from each throttle, and collects it into a mini plenum to give you a balanced vacuum line to use for your ECU's map sensor, and maybe brake booster or anything else that needs manifold vacuum.

[knightrous]

You can make your own vacuum collector for $15

I used basic irrigation fittings for mine.

[The Witzl]

yeah i did the same myself some years ago too when i was helping someone with a 20V
I simply showed a picture for demonstation purposes.

Another popular trick to help "dampen" the vacuum signal to the MAP sensor is to fit a small lawnmower fuel filter in the vac line to the MAP sensor. This worked beautifully on my 18RGE which used to have unstable MAP signal at idle.