rotaryracer1

iTrader: (1)

add horsepower to your car?

Slammedblk7

iTrader: (7)

it relieves hp...doesnt add though

buttlips

It doesn't actually ADD horsepower, but it does reduce the amount of horsepower lost to parasitic drag. I'm not sure what amount of parasitic hp loss the belts create, but my guesstimate would be less than 5hp.

scathcart

It reduces HP loss, which is directly translated to the drivetrain. So, yes, the rear wheels sees more hp.
It's worth about 6-7 hp, but most people remove them for the ~100 lbs of weight savings and underhood clean-up.
Weight loss makes your car faster!
Sean

Samps

The air pump seems to be the heaviest and hardest to turn; sucks that it's the one you need to keep.

Ryde _Or_Die

Why do you need to keep it? Thats the only thing I really plan to remove under the hood.

CrackHeadMel

iTrader: (2)

If i take off my air pump, what will open and close my 5th and 6th ports? will i just have to wire them open?

Samps

You lose alot of torque in lower rpms when removing the air pump. You will no longer have a functioning VDI or aux port system. Both of which are there to add low end torque. Some people have custom systems with electronics but they are the exception not the rule. If you have a turbo then ditch the air pump the first day (unless you need emissions). On an NA, it just doesn't make sense.

CrackHeadMel

iTrader: (2)

how would i hook up a electronic system, like an msd rpm switch hooked up to a solonide? wouldnt that draw mad amps?


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oh crap im thinking again

What if i hooked up the ports to a cable simaler to the Choke on old chevy's and stuck

95R2-89TII Ground Zero

I'm re-doing my engine right now too....and I planned to take off the AC pump and the PS. I didn't want to take off the Air pump because of all the things that I need to do to open and close the 5th and 6th ports. But now I just might do it.

Ryde _Or_Die

Oh ya I am talking about my TII. I am waiting until I get my MP & DP until I can ditch my air pump though.

Anderson

The 5th and 6th ports in the S$ open from exhaust back pressure, while the S5 cars are opened by the Air pump.

I belive the airpump in the S4 is for emisions only, But I'm not totaly sure on that.

PraxRX7

My aip pump is gone as soon as I get rid of that Cat that has almost 190,000 miles on it (ooooouch)

Felix Wankel

TIIs dont have 5th and 6th ports...