Air Filter Shootout Test - Results!
AMSOIL has not had the Foam Filter for several years but when tested against the K&N, flowed slightly better and filtered many times better.
AMSOIL does Not currently offer a Panel Filter for the EVO.
We do have the Injen System available that comes with the EAAU Filter.
Doc
AMSOIL does Not currently offer a Panel Filter for the EVO.
We do have the Injen System available that comes with the EAAU Filter.
Doc
Last edited by mdsevo06; Jan 16, 2009 at 02:24 PM.
You already have a MAF adapter. The TXS one is very similar to the the Vibrant part. The Amsoil filter is a bit long if you have an ACD (05+) car. It may not fit. I recently bought an S&B filter to replace my K&N. Should filter better (8 layer cotton gauze vs 4) and it has a built in velocity stack. The S&B is also available in a 5" length just like the K&N so it should fit fine. The Apexi filter is a dry disposable paper cone filter. When it eventually clogs up, you throw it away.
And does it come with it's specific adapter when you purchase it?
Thanks
You already have a MAF adapter. The TXS one is very similar to the the Vibrant part. The Amsoil filter is a bit long if you have an ACD (05+) car. It may not fit. I recently bought an S&B filter to replace my K&N. Should filter better (8 layer cotton gauze vs 4) and it has a built in velocity stack. The S&B is also available in a 5" length just like the K&N so it should fit fine. The Apexi filter is a dry disposable paper cone filter. When it eventually clogs up, you throw it away.
Last edited by shadow1; Jan 17, 2009 at 04:55 AM.
Had the car retuned yesterday and made 16hp over the factory box with the K&N drop in filter so I'd say it works pretty good!
I compared the stock air box with K&N air filter drop-in with the Vibrant cone filter today. Check out my thread.
https://www.evolutionm.net/forums/ev...ir-filter.html
https://www.evolutionm.net/forums/ev...ir-filter.html
I just installed my Perrin intake tonight, great piece. What A/F's should I be looking for? I haven't been tuned because I was waiting for the intake to do some datalogs and have TBE, test pipe, AEM UEGO.
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I'm very happy with mine. I put down some great #'s on the dyno yesterday and from the looks of it it will filter much better than the Vibrant air filter I replaced. I'll be checking my MAF every few months to see if it gets the dirt/dust build-up like it did with the Vibrant filter.
You toss the whole filter and yes it does come with an adapter. I ported mine out pretty far to make the transition better because it was pretty rough out of the box.
Had the car retuned yesterday and made 16hp over the factory box with the K&N drop in filter so I'd say it works pretty good!
Had the car retuned yesterday and made 16hp over the factory box with the K&N drop in filter so I'd say it works pretty good!

can you comment on how much quieter it is? I already decided this was the one for me and I ordered it from MAPerformance! Thanks for their test! I love the apexi curve!
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Actually I was looking it up and I read that you can contact apexi and order just the filter, and it's like 69 bucks
can you comment on how much quieter it is? I already decided this was the one for me and I ordered it from MAPerformance! Thanks for their test! I love the apexi curve!
can you comment on how much quieter it is? I already decided this was the one for me and I ordered it from MAPerformance! Thanks for their test! I love the apexi curve!
Actually I was looking it up and I read that you can contact apexi and order just the filter, and it's like 69 bucks
can you comment on how much quieter it is? I already decided this was the one for me and I ordered it from MAPerformance! Thanks for their test! I love the apexi curve!
can you comment on how much quieter it is? I already decided this was the one for me and I ordered it from MAPerformance! Thanks for their test! I love the apexi curve!
Did anyone else have a problem getting the Perrin intake to fit in the space provided? It was really tight and is rubbing on the Diff Fluid rezzy. I'm probably just going to get a 5" AMSOIL filter to replace the Perrin. Car runs like a champ!!
That is correct. AMSOIL and Injen partnered up in 2007 with the Diesel Pickups and then a few auto's at first. After testing and a 24 HP gain on the EVO, they brought out a pretty good lineup for the Tuner Mkt. including the EVO's.
I think they are high quality units using Aluminum tubing and with the addition of the AMSOIL Filters, are one of if not the best setup going.
Doc
I think they are high quality units using Aluminum tubing and with the addition of the AMSOIL Filters, are one of if not the best setup going.
Doc
Oil Doc's site only has the filter datasheet, not anything on the rest of the injen.
I've never seen anything I'd call "quality" from them in the past, but does anybody have the PN for the kit with the amsoil filter?
Oil Doc is quoting hp figures from Injen that were untuned and not reproduced at those levels in the real world. IMO the Injen intake is not a best intake out there. Injen website doesn't list their intake system anymore. I bet demand fell off and they discontinued it.






