[smurfbus]

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Originally Posted by heliolps2

I would never use twin 044's , together they bump the fuel pressure to high and leans out the afr's across the board, Your better off running a single 044. Lower you system pressure and should be better on higher RPM's.

You can always dial the system pressure lower even with two 044 pumps. I use 6bar after testing different pressures. I forgot to add that with my aic1 on the lambdaport I have a harsh fueling map too that works pretty good if rpm vs. Airpressure can be considered good anyway. You always have to compromise cruising to performance on boost set up. The plunger is the worst part on my system.

Has anyone measured the pressure delta over the plunger? A magnetohelic pressure differential gauge would be handy with these engines to see where the pressure losses are worst.