Just wondering something, purely hypothetical. Say one removed the air pump to save weight and parasitic drag (after installing a header). If one were to lock the 5/6th ports open full-time, how much low-end power would be lost?

I ask, because without the thermal reactor needing a full-time air supply, it seems rather inefficient to have the air pump just to move a couple actuators.

 

enough to feel it.

 

AAAANNNNDDDD.....

Removing the air pump will not net any gains and any parasitic drag you think you removed is negligible. You will pretty much have nothing but a loss doing so. Do you really think you will free up 20HP removing the airpump?

 

No, but it would make the engine compartment tidier and simpler, and maybe lose 10lbs.

 

If you want to save 10lb, best do some human weight reduction : )

As for the tidier engine bay, I can't argue with you.

 

As others have said, keep the air pump. It runs both the VDI and aux ports. Wiring up the aux ports open all the time would without question negate the benefits of removing the air pump by many times. Wiring the VDI into the high RPM position would be even worse.

Seriously, what's 10 LBs on a street car? Take all the junk out of the trunk and save 20 LBs.

 

Fight the urge to modify everything under the hood, and leave it alone. You'll be happier preserving what little low-end torque you have.