ES3

I'm probably overthinking this, but in a manual, if you downshift from say 5th to 3rd, and do nothing with the gas, the rpms of course jump way up and the car jerks. How does adding gas make a car jerk less, in a manual anyway? If anything wouldn't adding gas make the rpms go even higher than they would have otherwise?

Or is it that when you put the clutch in the rpms drop off, and the "blip" is adding gas to bring the rpms back up to near what they would be when the gear is engaged?

seanyepez

You answered your own question. The blip of the throttle with the clutch in brings the revs to the point that they would be in the lower gear so the transmission's synchros do not need to work as hard. This is smoother and prevents the jerking motion.

rominl

iTrader: (4)

yes that's the whole point of double clutch or rev match. you rev up the engine before engaging the gear to create a smooth transition. otherwise, you are right, it's pointless

autovation

iTrader: (1)

Looks like Lexus will be bringing some for us to drive at SEMA... https://www.isfdrive.com/

Cornellian

I do have 1 question for anyone who knows...

Q: Shortly after the press release someone confirmed that the gear shift *Direction* in the manual mode would have the *+* sign at the bottom and *-* sign on top. However, in all these pictures it's the same as IS350. So, should it not be the opposite of current models since, I thought Lexus said they would fix it by the time IS-F comes out (i.e IS350, GS, etc..)?!?!?

AlBoston

Yeah it jumps the rpm's up to the point that the transmission would have done anyway. By having the engine bump up the rpms (more gas) prior to engaging the gear, it makes it a much smoother action. No jerkyness of the transmission speeding up the engine.

Wow, now I have to decide what color I want. That blue looks awesome.

4TehNguyen

iTrader: (1)

in my last car, manual 2000 prelude, I would always give it a little bit of gas to rev match when changing gears on up and downshifts, which made for very smooth gear changes. I could change gears smoother than most automatics.

Also you will lose some revs during a gear change, so blipping does two things, keep the power consistant instead of a momentary loss and keeps the gear changes smooth

omgitsroy

iTrader: (1)

ES3... if you drive an automatic.. you can see that the tranny does something similar so you don't feel the jerk in your car when it changes gears... (usually downshift) In a manual this luxury is taken away and to make up for you ... you hit the gas a little to match the rpm for a smoother transition...

vip3r1850

So your saying that throttle blipping is also a performance factor ?

BUST

Finally no studio pics.. Love it!

lobuxracer

iTrader: (2)

Not really. It just keeps the chassis from getting upset.

You guys who don't get this need to ride a bike. If you don't blip the throttle on a bike, you end up on your head. It's fundamental to being smooth.

omgitsroy

iTrader: (1)

in my opinion... i think it helps through turns and cornering...... more heel toe.. but to me it makes a huge difference... so i say yes on performance..

singleT

^^^ Correct


Throttle blipping has most of its benefits on a track. It uses the engine to help brake in to a turn, and allows for smooth turn ins into the turn without changing your momentum and sliding out of your line or apex. Doing all that will put you in a lower gear and in optimal power range to exit the corner.

lobuxracer

iTrader: (2)

If you are using the engine to brake into a turn, you really need a track day with a competent instructor.

There is only ONE reason to blip the throttle - match engine speed with road speed and NOT upset the chassis. There is no other reason, and it has nothing to do with performance and everything to do with smoothness.

SERIOUSLY - some of you guys need to ride a bike at speed. You'd get an education you can't get with four wheels under you.

flipside909

Highly agreed, the pro instructors/drivers made it a point to keep the IS-F in a fluid motion. The more you pitch and roll the car, the slower the car gets. Keeping the line is crucial especially in competition racing.