Quote:
Originally Posted by 95KA-Turbo
Most of the benefit of ITBs are lost once you put a plenum around it. Not saying it won't make the car a little more responsive, but it is basically a waste of time/money on a turbo motor. You won't see the massive mid-range gain you see in NA applications because you have to run the plenum which basically screws the whole power curve up.
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Agreed. ITBs with a plenum isnt a good idea at all. Your talking a minute response gain for a huge PITA. Listen to the guy who did this already.. Dont do it.
Tuning your airflow for each cylinder to run at peak efficiency huh.. Why tune something you really dont need to tune at all. With a plenum and runner design each cylinder is getting the same amount of air which is what you want. You tune each cylinder for peak efficiency with individual EGT probes for each exhaust port and a EMS capible of pulling fuel from individual banks.
The main reason for ITBs was to increase your intake velocity. With a plenum it completely defeats the purpose.