Mr. Banks
New member
So I had sent an email to Volant's tech support asking about ordering a Powercore filter replacement for my CAI's Pro 5 filter. They responded with some information about the powercore filter, sealing off the rest of the compartments, and their effects, the "scoop" fitting, and made a comment about my Borla dual exhaust system. They also commented on replacing a part for me which I thought was nice...
Volant Tech:
"Currently the powercore filter that will fit in the 18747 air box will not flow enough cfm for the 4.7L engine causing a loss in hp and poor shift points. As for a ram air scoop it's not out of the question and we might make one in the future but the cost of the 38640 scoop mold was over 30k.
Volant only builds scoops for the top sellers like the Duramax, Silverado, Titan, Tundra etc, We have only sold 22 18747's this year it only fits one model and is only a three year run so we would never make our money back on the scoop. If you know other 4runner owners that are interested in a scoop and you can provide me with something I can take to the owner it will help out quite a bit. As for the hole in the front air takes the path of least resistance so air is being pulled from the larger hole not the smaller one, once your suv gets moving there is more air entering the air box than the motor pulls in so the air not being pulled in needs some place to go so it exits out the smaller hole if you cap the hole the air will have to fight the incoming air flow causing turbulence and a loss of hp, It's easier to picture it in traffic terms having one entrance and one exit makes for a smoother passage than having only one entrance/exit. That being said If you would like a cap I will send you one If you would like a piece of trim for the airbox to the fender I can send one as well, If you send a photo of the damaged air duct I will replace it free of charge, On a side note having a dual exhaust system with 2 2in pipes equals a single 4in unless your over 550hp this is too much pipe and not enough back pressure meaning you are losing low end performance you will see a better gain with a single 3in system"
Whoa there buddy, did you just say that my expensive Borla system is robbing me of low end performance? What do you all think about any of this?
Volant Tech:
"Currently the powercore filter that will fit in the 18747 air box will not flow enough cfm for the 4.7L engine causing a loss in hp and poor shift points. As for a ram air scoop it's not out of the question and we might make one in the future but the cost of the 38640 scoop mold was over 30k.
Volant only builds scoops for the top sellers like the Duramax, Silverado, Titan, Tundra etc, We have only sold 22 18747's this year it only fits one model and is only a three year run so we would never make our money back on the scoop. If you know other 4runner owners that are interested in a scoop and you can provide me with something I can take to the owner it will help out quite a bit. As for the hole in the front air takes the path of least resistance so air is being pulled from the larger hole not the smaller one, once your suv gets moving there is more air entering the air box than the motor pulls in so the air not being pulled in needs some place to go so it exits out the smaller hole if you cap the hole the air will have to fight the incoming air flow causing turbulence and a loss of hp, It's easier to picture it in traffic terms having one entrance and one exit makes for a smoother passage than having only one entrance/exit. That being said If you would like a cap I will send you one If you would like a piece of trim for the airbox to the fender I can send one as well, If you send a photo of the damaged air duct I will replace it free of charge, On a side note having a dual exhaust system with 2 2in pipes equals a single 4in unless your over 550hp this is too much pipe and not enough back pressure meaning you are losing low end performance you will see a better gain with a single 3in system"
Whoa there buddy, did you just say that my expensive Borla system is robbing me of low end performance? What do you all think about any of this?