Is there such a thing as too much CAI ?

[jordak]

Having already installed SS Induction and noticing an improvement in throttle response I decided to experiment by adding the under the headlight CAI as well.

Whilst I dont have any kw or time stats to share I did notice a definate drop in mid range torque. How can this be? has the ecu freaked out and requires to time to adjust, I would'nt think so.

Any thoughts ?

[Blown BA]

NO

[ducatijb]

Best bet would be to dyno the car and then redyno it with the 2nd CAI blocked off.....then compare the dynographs across the rev range.

[Turbo6man]

You can certainly have too large an air intake - it all has to do with the ram effect that you can achieve by having a somewhat restricted passage upstream of the throttle body. It varies with a lot of different design parameters and you need to experiment while on a dyno. My 4.1 litre turboed engine has only the standard (approx 1" square) air flow meter inlet and I have tremendous ram effect (very long runners on the 4.1efi motor) and virtually no lag anywhere in the rev range because of the enormous torque straight off virtually idle speed.

Now it's possible that I might get an improvement by having a larger intake but the thing just has so much grunt as it is that I couldn't be bothered trying anything else. If it ain't broke don't fix it ...

[Biggy]

I would think adding the second CAI would undo the ram effect gained by the SS induction as behind the head light would not have that ram effect happening. SS inductions went to the trouble of having a wide mouth collector and the deflectors to ram as much air into the box and you have negated that by putting a hole in the box so that the ram pressure disapates out of.

Biggy

[jordak]

  Biggy said:

I would think adding the second CAI would undo the ram effect gained by the SS induction as behind the head light would not have that ram effect happening. SS inductions went to the trouble of having a wide mouth collector and the deflectors to ram as much air into the box and you have negated that by putting a hole in the box so that the ram pressure disapates out of.

Biggy

Turbo6man / Biggy

Thanks for the input. I have been asking around about the effect that a 2nd CAI would have and was told that "You can't have too much air" No one mentioned the Ram issue (including APS).

Anyone in WA want a two day old XR8 CAI?