I asked this question in the second gen section, as i have a second gen 6 port turbo... but i figured id ask here, might get a better response from racers point of view. Im trying to determine how to size ITBs for various port configurations on a 13b. Im also attempting to determine wether ITBs will make a worthwhile difference on a turbo setup.

All set ups in question refer to streetable set ups. Im not asking about J ports or P ports or crazy big B ports. I am open to learning about those as well, because i see myself heading in that direction, but im after a streetable setup first. Thanks

Current wish list (hopefully new build):

- 13b 6 port
- streetable port job
- webber intake
- ITB
- 13b turbo plenum
- 750cc primaries
- 1600cc secondaries
- ps2000 Haltech

Theirs obviously alot more involved, im at 6500 without figuring out how to get the power to the ground. The Itbs being the biggest concern at the moment. The rest i have an idea on.