Is this common knowledge and or truthful because it just happend to me today twice.

Can't agree that I'm glad to see it's normal or even common. But at least I'm not the only one to experience this.

This just happened to me two times today for autocross runs and almost identical as reported above but I'd say 2 seconds is the time it takes to come down and I went directly from WOT 6k rpm in 2nd gear, to on the brakes hard through the finish line while applying the clutch then taking it out of 2nd gear into neutral. The tach would hover around 3K for like 2 to 3 seconds. Spooked me a bit.

 

I agree, 15 seconds is a LONG time and could be a bit exaggerated (no insult intended).

I've had mine hang for about 5 seconds before coming down from 7K RPM's. It also fell slower, so possibly it was close to 15 seconds from redline to idle.

It was when the car was brand new and I was breaking it in. I took the car up to about 3k RPM while moving, pushed the clutch in, popped it into neutral, bounced off the stock 2-step, let the car fall back down to idle, let out on the clutch, floored it again bouncing off the redline (still in neutral) for about a second, then let off the throttle completely. It hung out around 7K for a good 3-4 seconds and then started to fall back down. I would say the RPM's fell about as quickly as it would if I would have been cruising in 5th gear and simply let off of the throttle and let the car engine brake.

I always speed match my downshifts, and this RPM hang that I've seen on the 2006 Evo (wasn't there on my 2003 or 2004 Evo's) is new to me and took a little bit to get used to. At first I was over-reving my downshifts by quite a bit.

 

I've had this same thing happen to me and was always curious about it. I just thought it was normal and from what I've extracted from previous posts it is normal. As far as the 15 second exaggeration, it did sometimes seem like it was that long to go from high revs to idle rpms.

 

Mine does the same. And I know I have leaky seals in the throttle body. The seals are on the way, and hopefully the problem will be fixed. Could also be a throttle cable, correct?

edit: Mine HAS sat at 4k for 10-15 sec before settling down. I put it in 4th at a stoplight to get it stop.

 

I'm still very curious if this is in fact true because it sounds like it makes sense but is there any proof or is it common knowledge?

 

well that explains things for me, i had no idea there was an ecu setting taht did that. thanks alot zbomb

 

My 05 was doing the same thing until I recently changed my BOV to the metal one. I'm not saying for sure that It's related but it stop doing it after the upgrade(yes it was the only thing I touched). I know for sure that the bov had something to do with it since I only autocross the car and it used to hold revs for a couple of seconds after every run, nothing I did would make the car not do it. Now it does not do it and I hope it never does it again, maybe the Bov is the culprit, I don't know.

 

try cleaning your throttle body my used to stick in the mornings. Works fine now

 

This happens to me for as long as i can remember. I just cleaned mt TB today to try to get rid of the annoyin p0505. I changed my clutch and flywheel as well. I'll update once i try her out!

 

i have a brand new evo 9 with just exhaust on it right now and i notice this happens to me too sometimes. like 3 to 4 seconds. ill have to check the cable that could be the reason but it is anoying!

 

Update

after cleaning my TB and changing clutch/flywheel, my revs no longer stick! i do not know if this is from the TB cleaning or the upgraded clutch and flywheel. my annoying p0505 is gone as well. 2 days and 150miles of no CEL