Since you guys are experts this will be easy.....Thanks very much already.......

cam, 58 mm tb, ported heads etc......and what do you know a flat spot off idle.....

VE tables? and how much change? or is there a better way?

I don t use a maf, just speed desity.....its an older car/lt1 swap...

Oh and is there a way to trigger a different ignition map for nitrous or basically just reflash for nitrous......?

 

What cam, a big cam causing a weak powerband up to 2k is no supprise at all, playing with timing very carefully cell by cell helps make great magic at low RPM. WOT timing work is "easy" by comparison, driveability takes time.

Run some logs, and look where MAP gets crappy and compare it to your mental note of approximate RPM where this occurs.

You'd have to re-flash for nitrous, although I seem to remember someones attempt at making a switchable system? But in stock form, this does NOT exist. Maybe this could be done somehow on a Vette with the valé key, but I dont know.