secondaries question

compprat · Sep 16th, 2006, 04:33 AM

I have an 05 SPEC V SE-R, and ive had my car for at leaste a good 6 months. Now on occasions i like to hit redline, and everytime i reach 5000rpm's the engine develops a deeper and more hollow tone. It sounds pretty sick, and i know that this is normal. Recently, actually just yesturday i took it up and i noticed that my cars secondaries didnt open. Once you hit 5000rpms it doesnt develop that sound that lets you distinguish if there open or not. Im kinda worried, is this a problem? The car seems to run fine, and it seems like it actually has MORE power in the upper power band.

All suggestions would be great.

Thanks

-Kyle

waznme · Sep 16th, 2006, 01:40 PM

they actually open @ 5200 RPM, and when you said they didn't open, did you go past the 5200 RPM range? if so, how far past it?...6000?

tim788 · Sep 16th, 2006, 11:16 PM

If you dont have it floored you wont always hear it (the sound)

compprat · Sep 17th, 2006, 04:23 PM

Quote:

Originally Posted by tim788

If you dont have it floored you wont always hear it (the sound)

yes the pedal is to the ground, and i do take it to 6000rpm, and shift right before the fuel cut off. Its nice not having a throttle cable so it doesnt spike.

thanks for the info so far

sunnysentra · Sep 20th, 2006, 11:20 AM

you have to push it to the floor at WOT and 5200 for it to kick in. the rush of air for that 2 seconds. Too bad there is no effect lower in the RPM to get that sound. I wonder if anybody has triggered it sooner with a switch??

chris 03 SE-R

**chimmike** · Sep 20th, 2006, 12:22 PM

it opens at that rpm to allow the air to enter shorter runners. Shorter runners=better top end. Longer runners=better low end. Opening the butterflies early can actually lose power, as has been proven before.

I wouldn't mess with the butterflies unless you're turbo.

compprat · Oct 14th, 2006, 04:09 AM

Quote:

Originally Posted by chimmike

it opens at that rpm to allow the air to enter shorter runners. Shorter runners=better top end. Longer runners=better low end. Opening the butterflies early can actually lose power, as has been proven before.

I wouldn't mess with the butterflies unless you're turbo.

good to know thanks.

-Kyle

xbrandonx · Oct 15th, 2006, 10:51 AM

Quote:

Originally Posted by chimmike

it opens at that rpm to allow the air to enter shorter runners. Shorter runners=better top end. Longer runners=better low end. Opening the butterflies early can actually lose power, as has been proven before.

I wouldn't mess with the butterflies unless you're turbo.

with the exception of loctiting them.

Mike is right though, people have removed the butterflies alltogther/left them opened however the little bit of top end gained doesn't offset the lower end power you lose.