CAI with POP charger or not?

[b-b00gie]

OK, well I ordered a HotShot cold air intake today.


I've read that using a JWT (or Stillen) Pop charger with the CAI is a good idea because of the funneling effect the pop charger creates.


My only concern with doing this is the following...


the only filters available for the pop chargers are the ones with that big chrome piece in the front. on a CAI system this part would be facing the ground and blocking the most direct airflow. with an HKS or Greddy type filter, the air would enter from the sides as well as from the bottom (straight into the intake piping)

Should I go with the POP or not?

[G-Forces]

I might be wrong but I think the POP charger has more to do with the aluminum horn that comes with it than the filter that attaches to it.

[b-b00gie]

yes, thats what I mean...

that is the benefit of it, and the benefit of using it in conjunction with the CAI...

but a draw back is that the only filters that fit on it have that metal piece at the front, which on a CAI would be facing down and blocking the air coming straight off the ground..

[slickkedar]

is there any modification necessary fora cai??

[b-b00gie]

Yes...

Next to your battery tray there is a hole which let air up into your stock airbox. The hole must be cut out and enlarged in order to fit the intake piping through it so that your filter can sit between your front bumper and your wheel well.

[P10DET]

Originally posted by b-b00gie
I've read that using a JWT (or Stillen) Pop charger with the CAI is a good idea because of the funneling effect the pop charger creates.

My only concern with doing this is the following...

the only filters available for the pop chargers are the ones with that big chrome piece in the front. on a CAI system this part would be facing the ground and blocking the most direct airflow.

Boogie, don't sweat it. The need for the venturi with the POP is due to the proximity to the MAF (directly attached to it). With the CAI, the effect of the venturi is rather limited due to the length of the pipe before the MAF. The airflow becomes significantly less turbulent farther down the pipe. The real turbulence occurs where the filter attaches to the pipe. It smooths out downstream.

As for the chrome piece blocking air flow, don't worry about that. You'd be surprised at how air actually flows.

Just use the K&N filter that comes with the HS CAI. You'll be OK. I don't think anyone has ever received any gains by using a POP with a CAI.

[A380Driver]

Hey Guys...

with the CAI and POP, will that fit between the chassis and the
fender liner? If so, water really wouldnt be an issue, right?

[b-b00gie]

George,

http://www.se-r.net/engine/cool_air_intake.html thats where I read about the POP w/ the CAI.

Still not sure which way to go...


Also wanna put an AEM bypass valve on it. Anyone know the diameter of HotShots intakes? Also, should I place the BPV before or after the engine bay on the intake? Not sure how close it can be to the filter and still be effective and/or if that is a factor in its operation...




A380Driver,

I dont think light water "hitting" the filter will be much of a problem. For example rain drops coming through the vents in my front bumper. Water on the ground shouldnt be an issue either. If it was then you could never drive your car in the rain if you had a CAI.

The real issue comes up when driving through a puddle which is about as deep as the lower edge of your bumper. At that point the water has enough wieght to it (or around it) to physically push itself into your filter and then get vacuumed up.

[P10DET]

Originally posted by b-b00gie
http://www.se-r.net/engine/cool_air_intake.html thats where I read about the POP w/ the CAI.

Still not sure which way to go...

Either way you will be fine.

Originally posted by b-b00gie
Also wanna put an AEM bypass valve on it. Anyone know the diameter of HotShots intakes? Also, should I place the BPV before or after the engine bay on the intake? Not sure how close it can be to the filter and still be effective and/or if that is a factor in its operation...

I'm pretty sure the CAI from HS is 3".

As for where to place the valve, anywhere before the MAF is fine - the higher in the engine bay the better.

Originally posted by b-b00gie
The real issue comes up when driving through a puddle which is about as deep as the lower edge of your bumper. At that point the water has enough wieght to it (or around it) to physically push itself into your filter and then get vacuumed up.

Yep. Think of your car as a 140+ hp shop vac!