[Dean]

Please excuse my ignorence, but isn't it the function >

of the vaccum to OPEN the fender vent above 3500 RPMs? If the vaccums disconnected, how will the fender vent open and stay open all by it's self? Wouldn't it just remain closed all the time, in it's normal resting state?

 

[Dean]

Supraman, thanks for the quick and informative reply. >

I knew it had to either hold it closed or hold it open, just wasn't sure which. I've made the Mod and will try it out tomorrow on the street and up on the freeway to see what I can feel and report back.

Always fun and interesting to see what things things bring!

 

[Dean]

Post mod test drive. Took the IS-F out this morning after >

having performed the described mod last night. The air temp this morning was about 65 with about 20% humidity. I ran the car both through the twisty's in the hills where I live and then up on the freeway and back home again.

I have to say I really like the result. The car perfoms much better in both the auto and manual modes, without using the Sport setting. Yes there is more power and low end torque, but more importantly for me is that there is a faster throttle response thoughout the RPM band. Just like most things, allow it to breathe easier and it will perform better.

If there was a drop-in high flow after market air filter out there we'd all jump to buy it IMHO. Isn't this really the same thing but for free? I will keep an eye on my air fliter and will expect to have to change it out sooner then reccommended with this mod. Not sure there is any possible downside to this mod? Would enjoy hearing others experience with this!

 

[Dean]

Asked K & N about using their air filter that fits into >

the IS-F though it was designed for the VW Cabio's and here is their reply:

"Dear Dean,

Thanks for contacting K&N. We have not released the air filter application for the IS-F. The problem with using an air filter which is not designed for the vehicle is the lack of complete seal. At K&N we designed the air filter from the air box to ensure a complete seal, so even if an existing filter with the correct length and width fits into the air box , it does not guarantee a complete seal and dust may get through the gaps. We are currently looking for an 2008 IS-F so if you would like to let us use your vehicle for R&D please contact K&N at 1800-858-3333. Thanks for writing.

George Hsieh
Tech Support
K&N Engineering
[email protected] "

I'll contact them tomorrow about their requirements to use my IS-F so we can get an air filter from them... Will keep you posted....

 

[Dean]

I thought about it some more and called K & N today >

to talk about their filters and their possible use of my IS-F to make an air filter. I was told they have a mold of the inside of our air box already and are waiting for some prototypes to be finished. They will need another IS-F to check the pre-production fit in about 6 weeks or so. I left my contact information and said I'd be willing to help and or to call me so I can buy a filter. They assured me that they would be in touch... We'll see!