So much for the Modman....

So folks I have the cuda out and have had my first experience with the mod intake .
Using a 750 vac secondary .
out of the hole is ok . has a flat spot around 3000 to 3500 rpm then starts to clime slowly (for my liking ) seems to smoothen out at 4000 rpm than at approximately
. 5000 to 7000 rpm it feels like a 250 shot of nitrous !
Any feedback at making it more stable is helpful