Trust me I understand that... but telling me a CAI is a bad thing on the front end of a turbo is also silly too... what flow did you set up for on the front end? Did you engineer it to allow for the maximum CFM that the turbo would draw? If you design the CAI with too small of a diameter you could cause problems as well. Just curious what you tried.. such as a 4" diam intake or a bit larger? Would love to see what fluid calc you put together based on the intake CFM of the turbo you are using versus what type of intake size you needed to get the proper flow to minimize the pressure drop (vacuum) across the front of the intake near the turbine.

 

[QUOTE=Lucky7s,Jul 1 2008, 10:09 PM] Trust me I understand that... but telling me a CAI is a bad thing on the front end of a turbo is also silly too... what flow did you set up for on the front end?

 

In all honesty, if you really want to do it correctly, you would probably need to start out with a 4" tubing that will gradually get larger as you get further from the compressor. I real pain in the ass to make, and not to mention finding a filter capable of being bolted onto a 6 or 7" diameter tube by the end of the run, but it would probably be the best way to do it without any negative effects.

 

But what if the inlet is only 2"? you would start with a 2.5" and gradually increase to a 4", which you can find a filter for. Also the KW SC sits at a point where you can take it directly into the front for cold air plus it would be more than 2%-3% gain more like 6-7%... and if you think gaining 6-7% from a CAI isnt worth it, then I guess a extra 30-35HP isnt worth that time to you *nod* Equations or not, they still show a 36 deg F drop in temps which is denser air for the SC to compress which should lead to a nice bump in power. Would love to see some results from a CAI on a KW (which I think someone is working on on this board as well).

 

What is better, to extend the inlet pipe to the front grill and let it suck cold air directly behind the front grill or take the air from there through a duct and transport it upwards, to let it get blown onto the air filter in it's original position?

This refers to the Vortech sc setup, it might be different on other sc's or turbo's.

My idea is to use a 76mm duct from behind the front grill to blow cold air onto the air filter and use another 51mm air duct from the right fake break cooling/fog light to blow cold air through the right fender on the air filter.


This should maximize the cold air effect on my supercharger, right?


Andreas

 

i found that inlet temps on a KW S/Ced car running through the mountains on a 90 degree day to be about 165 degrees. A well built CAI could provide the blower with a temp reduction of nearly 70 degrees. Thats a reduction by nearly double of what you calculated Lucky7s.

i think its totally worth the effort.

 

Open turbo FTW

 

Well, the lowest IAT's I currently see are 91 degrees Fahrenheit (at 68 degrees Fahrenheit ambient temperature).

Those are reduced by the water injection already from 102 degrees Fahrenheit before.

Will post more IAT's once my air ducts are in place


Andreas