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Originally Posted by H3.007
Hey Ducky,
There isn't a cover for the K&N that I am aware of. I think the principle is that it allows more air flow as opposed to the more restrictive factory setup. I am not sur ehow the Volant system works but it appears to feed from the factory air inlet. if this is the case, the Volant is still a restircted airflow - but I could be wrong as I have the K&N.
I did have some concern about the amount of hot air that could get into the filter over the K&N shield wall. However, it only make sense that when the vehicle is moving, the majority of the hot air will be pushed backward, away from the filter and out of the engine compartment through void venting and the such. However, I did take the precaution of buying pipe insulation (used in home plumbing applications- about $4 for a large package) and I lined the entire shield with it. The insulation is presplit and I used strips of black duck tape for further insurance against the insulation coming loose and landing on something hot or getting caught in a pully. I also figure that this will further dampen the resonance and any vibrations that may occurr.
Also, I can not tell you the specific horsepower increase but damn does it get to 80 MPH a lot quicker than it did. Mid range response is also quicker and it certainly has more power in the high end. The only downer is, again, the resonance noise when you hit the upper end. I am workign on some ideas to reduce that without ending up back to square one so I will post the results if my idea(s) are succesful. It also appears that my GPM has increased but I won't know until I hit the half-tank mark.
Hope this helps!
Chris
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WhiteH3 posted some dyno sheets a while ago for his K&N. I think his was one of the first and was tested by K&N. From memory, his increase was about 18ish HP in 3rd gear at the wheels. The only mod was an exhaust (Magnaflow perhaps).