Do I need a new converter?

mderoy340 said

Do post 2 test. Agree you are down on power. I'm not familiar with FI but fatten it up till the mph falls off. After you get the mph setting right, see if there is a way to fatten up launch, (accelerator nozzle on a carb, whatever that setting is for FI). I would think a single plane would work better with FI.

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Thanks for the replies so far! I ran that test and it actually 'flashed' at somewhere between 4100 and 4200 RPM.. So perhaps its not a tight converter I'm battling, but a lean fuel off the line issue that you're describing. I'm pretty new to FI also, but I know I can data log a run, so I'll try that next to see what is going on.
No idea what car weighs, It's full interior, roll bar, subframe connectors, fiberglass fenders, hood, and bumpers, fuel cell, etc... so pretty light all things considered!