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The info in here has been very valuable in regards to the LPE HPFP. I too was also under the impression that with the Supercharger, you need higher fuel pressure. But if 2175 PSI is sufficient and the pump flows more volume at a lower PSI, then that seems like the right thing to do with the XDI 30% injectors that I'm installing as well.
I'm looking on their website and it still says max pressure recommended is 2175. I swear I spoke to them and 2900 was acceptable. Maybe the guy on the phone didn't know or didn't care. Since it is not documented in writing, I'm inclined to believe I was falsely advised by whomever I spoke with.
I tune a bunch of cammed LT4 hpfp stuff but this would be my first LPE big bore. Fortunately I'm testing in my own car so I have plenty of time to test. I am after volume so that I can run full pump E so it seems I should stick to a lower pressure. I really appreciate all of those who has chimed in with their experience.
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