Quote Originally Posted by kday View Post
No need to worry about bursting the lines. Even if it was possible for the pump to develop that much pressure (it's not), the job of the fuel pressure regulator is to keep that from happening.

I guess if you put an 044 in the tank you could just bypass the external pump entirely.

Yep, kday, you are correct. I think I was misreading the original thread about installing the 044. The issue was raised that if you don't use a "high pressure" hose (i.e., one rated for fuel injection) it may burst. I wasn't thinking at all and that what's there already is fuel injector hose rated at 180 PSI plus.

I found the top flow number in the manual too. It is 600 cm3/15s at 13V (ramping up from the minimum of ~320 cm3/15s at 9V). So the flow range between 9V and 13V (which is controlled by the fuel control module J538) goes from 78 liters/hour (20.6 gal/hr) to 144 liters/hour (38 gal/hr) for the stock set up.

Since 044 Bosch pump requires reflashing the ECU with the 5 bar regulator, I need to first call APR because I have their ECU.

So, I will spend the weekend trying to figure out if I can find a pump that matches the flow of the stock set up to avoid dealing with a reflash.