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Old 26 Oct 2004, 10:26 PM   #1 (permalink)
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panel filters

can any one help looking on all the web sites for imprezas and the mod lists that people have done to none sti models, most of them say they have changed there panel filters to
sti filters,i buy a lot of stuff from a main agent ,bulldog in twyford, and they say that there is no diffrence between sti and standard turbo filters same part number,so why say they have sti filter if there is no diff, can any one tell me if there is a diff in flow rate ,
hope this makes sense,
thanks (holyfield)
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Old 27 Oct 2004, 05:40 PM   #2 (permalink)
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STi Filter as from STi not the one UK Subaru fit to the UK STi.

Green Cotton is a good choice or a group N filter.

I have a green cotton on my wrx
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Old 27 Oct 2004, 05:52 PM   #3 (permalink)
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The standard filter is like a piece of cardboard! how it breaths through this I will never know?
Have fitted a JR panel filter (green cotton) breathes much better.
Scooby magazine did the rolling road test and showed that the stock filter was about as good as a "more breathable one" Not sure as I would agree with that (personally) as I dont have all the facts and figures.
The alternative would be an induction kit, normally with a foam filter that is oiled, but as you may have read the oil can play havoc with the maff sensor on certain year models.
A bigger gain in hp can be gained, but so will your insurance premium :shock:


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Old 27 Oct 2004, 07:53 PM   #4 (permalink)
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I know that Nelson is running with a Green filter which replaced an STi - he read that the Green Panel filter got the best results on the scoobs in a panel filter test!
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Old 27 Oct 2004, 08:30 PM   #5 (permalink)
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thanks

thanks for taking time to reply it helped
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Old 27 Oct 2004, 10:59 PM   #6 (permalink)
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Go Green mate - I can honeslty say that the Green filter does have a slightly better pick up than the STI one. I can however say that for me the STI filter was also quite an improvement on the oem paper filter ?? I know the rolling road result as shown in Scooby Mag disproves this but I can only go on what I can feel........how much of upgrading the panel filter is a placebo effect I don't know ??

However the Green can be washed and re-oiled rather than the STi unit being a throw away only at 55 a time this makes it quite expensive

HTH
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