Aphex

Hi IS-F family,

I have a 2010 IS-F, and after taking it get an oil change at 20K, I noticed that it takes a little longer to hear that special roar.

I am trying to figure out if I am being paranoid of not, but I swear the secondary intake passage used to open up around 3,000 to 3,500 rpms. After my oil change (at Lexus dealership) I am noticing my IS-F roar around 4,000 rpms.

Is this something I should take the car in to get checked out, or am I just being paranoid ???

Thanks for your insight,
Nick

zmw

near 4000, like 3800 ish. Nothing about an oil change would change that It also may be based on load and speed, I don't know for sure.

Murph145

i dont have a roar anymore after putting in my injen intake and deleting mufflers / resonator i have a freaking monster sound at all RPM's lol!

but in serious when i did have stock intake and exhaust it was around 3,800rpm

Gymkata

You could find a definitive answer fairly quickly by searching, but I'm pretty sure the secondary intake opens at 3600 rpm.

Franch1se

Gymkata is correct. Stock the second intake opens at 3600 rpms.

PhiDeltBee

iTrader: (1)

3600 is correct. I haven't heard mine in awhile either. It roars at all rpm's as well!

Kramer

iTrader: (15)

Funny you mention this. I just got my oil changed and my car now seems less responsive....almost laxidazle.....

boostftw

iTrader: (3)

Reset the ecu and do a few WOT pulls and it will be back to normal soon

Aphex

Thanks for the insight everyone.

Thinking I might have to take the car back in, but wanted to make sure I wasn't crazy first.

Trying to figure out how to reset the ecu now. Wish me luck!

zapa

unplug the negative end of the battery for 10 min

Meraki Autoworks

iTrader: (8)

get an joe-z intake/exhaust

Kramer

iTrader: (15)

Have joe-z intake with hks center section and rear borla section.......

Just F Me

YAH...same here...mine roars at all RPMS....cut the exhaust and resonator. lol

aWorkOfArt

Weird... Mine normally roars when I mash on the pedal? But I think thats normal right? I hope mine roars all the time like you guys when I finally get my headers and exhaust installed.

Just messing bro! Good to know the exact RPM the secondaries open up. Very informative!

Aphex

Yes, I am definitely interested in getting a joe-z intake at some point. How much would it set me back?

BTW, does installing this void the warranty? I'm guessing so....