heatwavewo

can you fit the Fsport filter in the stock intake box?

Aspect

yes, the stock box and the f sport box are the same dimensions aside from the hole and the omission of the internal ridges

liazon

iTrader: (1)

this was a good tip!!!

an easy little mod and does add some throaty grumble when you floor it. i can see how you wouldn't notice a difference though if you had aftermarket exhaust.
30 minute job from start to finish including removing and reinstalling the airbox...after removal, .i used a large drill bit to make a few holes in the corners of my square and then a little handheld hacksaw to connect them and tighten up the lines.

knyg

the only difference is the added hole and different filter. You can cut or drill holes in the lower air box and get a good aftermarket filter. Much cheaper to diy

DmcL325i

lose the OEM perfectionist/F Sport goodies brownie points though lol

i went for the F Sport lower airbox and, unrelated, F Sport manual gear **** for my 2is but only because my last 2is wasnt an F Sport and my current one is and its a cleaner car so im wanting to keep the standard of modification a little higher. Running a K&N panel filter in mine as i already had it leftover from my last or i might have gone for the F Sport filter just to be a purist lol

knyg

Mightcarmods did a test of all kinds of intakes. Cone+intake, box+intake, relocation of both. Basically nothing showed any noticeable gain EXCEPT literally putting the cone filter out of the car and next to the big *** fan that they used with their dyno. Even then, not a noticible gain from driving.


So all in all, just make your intake to your liking: brand, shape, color. Whatever, it's not for gains.

SlenderKen

I got the entire F-Sport intake assembly. I had a K&N filter that I was using but replaced everything with F-Sport. I read that the F-Sport intake is similar to Joe-Z (or Greddy, I forget), but the F-Sport is louder due to the hole in the intake box.

lexus4jess

The pipe is more like a dressup for the engine. No gains, just louder sound.

redspencer

iTrader: (1)

This is not accurate. @joez had done multiple dyno tests on several IS350 using his JoeZ intake pipe which showed rwhp gains over stock.

I also datalogged airflow rates comparing the stock intake pipe vs the JoeZ intake pipe and documented airflow gains. In addition, I did a similar comparison test between the enclosed OEM lower intake box and the F-Sport lower intake box and datalogs also showed a noticeable gain in airflow with the F-Sport lower intake box setup.

Details can be found on this thread:
https://www.clublexus.com/forums/per...n-results.html

lexus4jess

No gains on GS car. I read that 2nd and 3rd gen IS car do show some Gains. That's what I meant.