Originally Posted by CdnoilRAM
I've been contemplating running my BBK 85mm for a while and holding onto the 90mm until I start running higher boost. For the 8-9psi a 90mm might be overkill, but I'll keep it just to have options. My engine won't like me either way, thank god for guys like Johan that can beat it into submission.
Once you go boost you can switch back to a stock throttle body and sell the larger one to get some money back. It won't be the restriction any more.