Air Filters
 

Hi everyone,

I'm looking at getting a bit more HP out of my 8 . What suggestions would you make with regards to the air filter.

I'm looking more for increasing the lower/mid RPM's

I was thinking the new K&N Typhoon


http://www.knfilters.com/search/prod...d=69-6030-1TFK


any suggestions ?

Try a search. Hint - search for REVi

Will I have an issue with the revI becasue of the mazda speed front end ?

Nope. There are a few units coming our. You have the Racing Beat REVi, the AEM CAI, & the upcoming 2nd gen. K&N (1st gen. LOST hp). Not sure any of these would be a big help in the low/mid range that you want. More hp in the upper end.

save your money and just get a Green or K&N replacement air filter

Have these been proven to do anything?

Nope. The RB REVi has been dynoed (by RB) to give about 3 hp across the rev range, with about 5 hp at the top. I would get the Ram air duct unit with it, as it helps direct cold air into the REVi unit. The AEM CAI is a new unit and currently being put through it's paces by a few people who have them. The 2nd gen. K&N made 3-5 hp in "Tuner" Magazine write up.

So there is no point in getting a drop-in filter.

Less maintenance, re-usuable. No hp gains though. Be careful though if you get one. Break it out of it's plastic wrapping and place it over newspaper overnight before you put it in as sometimes it has excessive oil that cakes over the MAF sensor & wrecks it.

where is the dynosheet?


$330 for a box identical in size and just about identical in design to the stock box except using a conical K&N filter rather then a panel K&N filter makes completely no sense at all. For a tenth of the price you can get probably 80% of the performance with just a simple drop-in.

theres also the new Blitz SUS power intake.......

i will have a DIY installation thread up next week along with a review and some videos.

Cheers

The design is similar to the new K&N unit. That dyno is in last months "Tuner" magazine (which also dynoed the Racing Beat cat back exhaust & a grounding system).

Drop in filters have never shown any power gain (on a few dynos done on this board). Don't know what I can tell. I didn't run them. A few other posters did and it came out to <1hp.

The differences are the housing the MAF sits in, The Cone Filter with a 'air director' thing on the top, and the tuned bell/velocity stack in the center of the filter. The stock box has this bell/velocity stack but part of it is cut to make room for the panel filter.

Sure they look pretty similar, esp from the outside, but on paper they are 2 TOTALY differnt items.

I would go RevI with the ram-air duct (either RB's one or homeade)

Well, 80 percent of 3 hp is 2 hp... pretty sure there is enough variability in a dyno to get that if i really wanted too

Like I said, I didn't do the test on the drop in filter, it was posted by a few other people on this board. it showed .3 to about .8 hp gain. If you want to claim "variability" of a dyno then none of the improvements would technically show any hp improvements. A 3 hp gain can be chalked up to "variations." None of the minor add ons such as air intake, cat back exhaust, hi-flow cat, etc would ever escape that "variability" notion (example +/- 3% = 5.5 hp). So if you think it's all dyno variation than all of it is pointless. But isn't it funny how these variations (except for the 1st gen. K&N) are all positive gains in hp ? Not to mention usually if you run a car back to back (and get heat soak) you lose hp.

Thanks for all the great info everyone ...


I guess i'll hold out for a few more tests.

Thanks again !

For the record, I have recorded increased flow with my K&N drop-in filter -shrug-