A few possibilities here:
1) My Bosch 044 is a lemon.
2) A Bosch 044 on its own can barely do 400whp @DB.
I'm a bit disinclined to waste another $200 on an 044 if it isn't adequate.
Anyone heard anything bad about Magnafuel pumps? The 4301 is obviously overkill but it's $15 more than the 4302 so I don't see a point in it.
http://www.summitracing.com/parts/MRF-MP-4301/