alejo

not bad, just used some throttle springs and hooked them around the spare horn mounting points on each throttle body - so far they have not come off.

turbo_pwr

Have you guys actually done back to back dynos with and without filters? I only lost 1hp so I wouldn't worry about using proper filters on the horns.

alejo

I'm not an advocate for the butt dyno but I could literally and definitively feel the drop of power big time with foam filters...

Mr. Francesco

I gotta get some money and purchase a set. Im mentally ready to do this mod, Im just lacking the bank with the widebody on its way.

s2kennmark

go get it already.... so you can tune in the summer while it's warm

turbo_pwr

Your butt is off.

I have the UNI foam filters and I've done runs back to back (15 min cool offs) with and without on 3 seperate dyno tunes sessions (on dynapacks) and the difference was 1-2 hp each time. So I'm giving you actually proof, which is more accurate than your standard butt dyno.

alejo

I think what was off was my filter type - particularly because the distance between my horns - ie. none - does not allow me to use sock type filters.

so which is it, are you turboed, ITB, both...?

S2KBLanton

ITB's are cool

turbo_pwr

My previous car before the s2000 were turbo (Eclipse GSX, Galant VR4). I used the same sign-on from another board. I kept the s2000 N/A, so I went the ITB route way back when. The UNI filters I use were designed specifically for Hayward when I tried to buy from UNI, they wouldn't let me and said I had to get Lance to order them for me.

alejo

I see, were they sock-type? - I didn't get my set up from Lance... here is the clearance of my horns: