Finally Got Screwed, Number and Pics

blkhorse said:

jlt's,demolets and several others put a large conical in the fenderwell to suck ambiant air,it's your motor do what you want,but the higher the intake air temp the higher the risk of detonation..end of story

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Yeah, but the problem with a lot of those "inner fender" style CAI's is that because they draw from the inner fender, space is limited, which also limits the size and capacity of the filter they're able to utilize. Fine for most N/A applications since their demand isn’t so high, but a hard spinning blower will really draw the air in and can cause quite the demand as far as over all volume is concerned. Not to mention the straighter you can get the incoming air entering your Mass Air meter, the less turbulent it becomes and the more accurately it will sample it’s reading.

As far as actual inlet temps are concerned....once you get moving and the airflow starts rushing through the engine compartment, it's all up for grabs. You may be able to pull slightly cooler air in from a stand still with a fender draw style kit, but since a Twin Screw is constantly compressing the air (even at idle), you're continuously heating the Air Charge as it squeezes between the rotors so most of that “slightly cooler ambient air” goes to waste anyway? You'd probably be further ahead with a more efficient heat exchanger set up at that point, than you would a complex air intake the draws from the inner fender.

I'm not saying fender draw cold air kits don't work, since there area obviously hundreds out there who've chosen to use them, but in a supercharged application, I'm betting they aren't making any more power or any better drivability that a guy choosing to run a strait shot with the large volume filter on the end. And I had real world dyno results to convince me of that!