Thats completely untrue. I have a 10.6mm pump and with my rail psi turned down my actual would exceed demanded by 2k+ psi. That was with 75% overs so I'm going to 100% overs now. Shane makes a more than the 10mm and 10.6 he's got 11 and 12mm pumps possibly larger I never asked. Either way I'm rocking the 10.6 untill I find its limits.
turn your rail pressure up to 26.1k and compare your pumps recovery time with a similar truck that runs duals. That is where dual pumps shine with larger nozzles. It will likely be a few seconds slower. If not then I say you can be making more power with better tuning if your driveline and charger will support it. You cannot watch the autocal to determine this accurately, you must load the log to scan tool and review the Graf log. Don't get me wrong, his pumps are top notch. All singles I have tuned lack recovery compared to properly tuned duals.
oke:
You dont need twins Dan but they have their benefits, as do singles. I am an EFILive tuner and it's all about pressure recovery during shifts or when you stab the throttle. The twins will recover from that sudden pressure drop at a much quicker rate than the single. Also they are more consistent with maintaining desired pressure without ovetshooting/undershooting. Seems singles are always correcting themselves. Probably mostly due to modified FCA's. They both have their benefits. Personally duals are cheaper and support more power so the only reason I see to run a single is to UN clutter the engine bay or due to organization rules.
