It's not me, I swear

I have noticed that when I'm shifting, that in between shifts, the revs actually go up a few hundred, almost as if it's trying to rev match automatically to reduce wear. I thought it was me at first. But then I made sure that I wasn't on the gas. Then I noticed that it also happens when my g/f is doing it. Come to think of it, it is only noticeable when you are accelerating quickly, is the engine automatically doing this to reduce wear, or are the injectors still squirting 1/10 of a second after lifting off the gas causing the rev to go up? Anyone notice this before?

Before anyone says "it's just you, and you probably need more practice on the stick", all my cars are stickshifts, and I have never had this happen in my celica, mr2, the sold all-trac, or my mom's camry.

 

there's been a few posts about the same subject, and I'll say something someone else said that sounded so good.... "It's like playing tug-of-war with someone, and they suddenly let go, you'll fall on your butt right? that's what's happening to the engine when you hit the clutch quickly after gassing, the engine is still going from hitting the gas."

That's totally true, I've seen it happen and done it myself, try something different to see that's the case. rev the engine to like 3000, let off the gas completely for a second until the car cruises a bit then quickly hit the clutch and upshift and you'll see that the revs do what they should... it's not a problem with the car or anything, it's just that the engine is still getting the gas in the lines for a second and the throttle butterfly hasn't closed fast enough. I'd attribute the same thing to the 1/5th of a second throttle lag when you're trying to re-match. You can't deny it, there's throttle lag on the TC... I know too, it stinks but I think it's the same thing going on here.

 

how heavy is the stock flywheel?

 

like 19-20 lbs

 

Yeah I noticed that when I first got my Scion TC back in July. I never noticed this on my other manual cars. I think the Scion TC shifts a little different that other manuals but have gotten used to it sorta. I still dont like it.

 

From what I've heard, its also a delay in the Electronic Throttle Control. Because you let off the pedal, the onboard computer is thinking maybe you might come back to it quickly, so its keeping you accelerating until it realizes you're not coming back. Yeah, this happens in 10ths of a second, but that small reaction time by the computer is enough to spike the RPMs a few hundred. As long as its not bumping over a grand, I really don't see an issue.

 

I forgot it had electronic throttle control. I didn't see it as a problem, just wanted to confirm I wasn't the only one. Thanks

 

i love this feature......easier to rev match or close to it.