Fuel Injection intake, When is the stock plenum not enough? Options

[jhadler]

So... I'm just thinking...

I've got this set of independent throttles sitting on a shelf in my garage, but my understanding is that they're not necessary for a basically stock motor. That being said, at what point do independent throttles become useful?

Cam? What kind of cam will limit the stock manifold?
Bore? How much displacement will limit the stock manifold?
Compression? At what point is more flow needed?

I know that the very first answer form Mr. Raby will be "it's all in the combination", and that makes perfect sense. But I still would like to get some ideas at what will limit the stock intake plumbing.

Example: What about a 2056 with an FI cam? Will individual throttles be needed at all? Or would the stock manifold be sufficient? Would there be any gains to going to ITB's even if the stock manifold was sufficient?

Thanks all!

-Josh2

[Bleyseng]

All depends if you are trying to use DJet or not. If you are going to aftermarket FI then the stock manifolds make no sense to use...switch it over to independant TB's and go with a better cam .