Terminator Posted July 29, 2002 Share Posted July 29, 2002 I have put the stock air box back in due to the hot temperatures causing too much low rpm lag. I forgot how quiet the car was!! I know some of you guys run the stock box all the time but with an alternative panel filter. How do these compare with the stock filter for performance and filtration? Any details would be appreciated. Quote Link to comment Share on other sites More sharing options...
GavinL Posted July 30, 2002 Share Posted July 30, 2002 Originally posted by Terminator I have put the stock air box back in due to the hot temperatures causing too much low rpm lag. I forgot how quiet the car was!! I know some of you guys run the stock box all the time but with an alternative panel filter. How do these compare with the stock filter for performance and filtration? Any details would be appreciated. Chris Wilson says don't bother the stock one is fine. Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted July 30, 2002 Share Posted July 30, 2002 I'm running the stock box with a TRD filter. To me, it feels smoother than the standard filter but barely noticable, and only at lower rpm really. Quote Link to comment Share on other sites More sharing options...
GavinL Posted July 30, 2002 Share Posted July 30, 2002 Originally posted by Matt Harwood I'm running the stock box with a TRD filter. To me, it feels smoother than the standard filter but barely noticable, and only at lower rpm really. Is that comparison new filter v new filter? Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted July 30, 2002 Share Posted July 30, 2002 Doh! Although my standard filter was only 6 months, 7,000 miles old and was still very clean... Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 30, 2002 Share Posted July 30, 2002 Originally posted by Terminator I have put the stock air box back in due to the hot temperatures causing too much low rpm lag. I forgot how quiet the car was!! I know some of you guys run the stock box all the time but with an alternative panel filter. How do these compare with the stock filter for performance and filtration? Any details would be appreciated. Personally I think stock paper element is fine, but I have a TRD one I took off a sale car, looks pretty much as new, if you want to try it I'll take 15 quid for it, plus postage. Quote Link to comment Share on other sites More sharing options...
AJI Posted July 31, 2002 Share Posted July 31, 2002 I have left the stock panel filter on but I have taken off the cover box to allow more air when it needs it. It seems to work pretty well as I can hear an induction noise when air is being pulled in. There is a better pickup at lower revs but I would say not as much as a proper induction filter. What I have been thinking about is to open up the air channels that bring air into the airbox area. They look pretty constricted in stock form. I've no idea as yet what I'm going to do but if anyone comes up with some ideas I will be listening. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 31, 2002 Share Posted July 31, 2002 Originally posted by AJI I have left the stock panel filter on but I have taken off the cover box to allow more air when it needs it. It seems to work pretty well as I can hear an induction noise when air is being pulled in. There is a better pickup at lower revs but I would say not as much as a proper induction filter. What I have been thinking about is to open up the air channels that bring air into the airbox area. They look pretty constricted in stock form. I've no idea as yet what I'm going to do but if anyone comes up with some ideas I will be listening. It is now pulling in hot engine bay air, as opposed to the cold air from outside the bay as Toyota designed. All this talk of kits is fine, but do you need one, will it make a gain? My tests with a manometer on the engine side of the stock filter box and filter suggest even at 18 psi boost, no cats the stock box and filter present no significant restriction whatsoever. The rolling road I use has also failed to show any gain at all from running 2 different after market filter kits (HKS and Apexi). I personally feel the stock filter is best, it is designed to pull cold air, it's quiet, and it actually filters properly, IMO some of the aftermarket filters are a joke as to filtering efficacy. Quote Link to comment Share on other sites More sharing options...
AJI Posted August 2, 2002 Share Posted August 2, 2002 Taken heed of your advice Paul and I've put my airbox cover back on, but I still think I've lost a slight bit of initial grunt as I put my foot to the floor. It may be that it's all in my head as it is not all that noticable. I definatley noticed a difference when I took the cover off.... may be there's a difference when it's cold temperature outside as opposed to the hot/warm weather we've had recently? Is there any other way to bring cold outside air into the airbox area without having to take off the front right headlight unit? I've thought about trying to open up air channels but the plastic is realy tough. Quote Link to comment Share on other sites More sharing options...
Alex Posted August 2, 2002 Share Posted August 2, 2002 Originally posted by AJI Taken heed of your advice Paul Who's Paul?? Matt, Phil, Gavin & Chris have all commented but no Paul... Anyway, If you get an FMIC you could drill down and suck air up from the drivers side air duct. But the best way would be through a NACA duct ported directly in to the box - that would require you to cut the bonnet and therefore respray it...might be worth doing some more "mods" to the bonnet at the same time. Quote Link to comment Share on other sites More sharing options...
Barry Posted August 3, 2002 Share Posted August 3, 2002 Originally posted by Alex Holdroyd Who's Paul?? Matt, Phil, Gavin & Chris have all commented but no Paul... Anyway, If you get an FMIC you could drill down and suck air up from the drivers side air duct. There already is a hole in the bottom of the stock air box that draws air in from the drivers side bumper vent. It just needs a little ducting to divert the air up there to get a better flow, you dont need to drill anything. Quote Link to comment Share on other sites More sharing options...
AJI Posted August 3, 2002 Share Posted August 3, 2002 Hmmmm..... I don't know where I got Paul from, I think I was reading another post at the time. I was supposed to say Chris as I was commenting on his previous post. I think the hot weather is getting to me. We all go insane at some point in our lives. Now I'm off to ride on my yellow elephant. Quote Link to comment Share on other sites More sharing options...
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