Initial B

iTrader: (2)

dude, please just give this up. First, you act like you KNOW your IS has rev match (it does NOT, unless it's an IS-F)....then you tell us you've been driving 25 YEARS and know how to drive a stick...and you still don't realize that your car is not blipping the throttle to rev match on down shifts.

How did you downshift your manual cars....foot off the gas, clutch in, shift to lower gear, clutch out, and let the engine 'rev match' by itself? lol

Your car does NOT have rev match, sorry man.

Initial B

iTrader: (2)

that may be a good mantra for the folks over at Oldsmobile (notice they aren't around anymore), but for a 'sport sedan' like the IS - with paddles no less - they should have programmed the tranny to behave like the IS-F: in auto (D), it behaves like a slushbox. Fine, great for rush hour traffic. But in sport mode/manual mode/whatever you want to call it, it should do three things:

1) hold the current gear until paddle input is received
2) shift immediately once paddle input is received
3) rev-match on downshift

If Lexus would offer a programming upgrade to correct this massive fail, I'd pay good money for it

Kurtz

iTrader: (1)

Except the paddles aren't shifters, so there's nothing for Lexus to 'correct' other than perhaps their choice of words in marketing material.

They are top gear limiters. Period.

chikoo

correct....but the difference is that the revs increase before the actual engagement. i.e. it increases in that interval when it is neither in the 4th or the 3rd gear in my example. That window is so small that it is not able to get to redline and what actually ends up happening is that a revmatch is achieved. It may not be by design,but this is what does end up happening.

However, if my foot is not on the gas pedal, there is no rematch. In that scenario, the revs increase merely due to engagement to a lower gear and it is not very pretty because there either is a driveline shock or engine braking observed.

06isDriver

ok, whatever you say then. More than likely, you're putting unnecessary wear and tear on your car that it wasnt designed for NOR CAN IT ACHIEVE.

OPTiK

Yeah, I meant it limited to 5, instead of the standard 4.

Initial B

iTrader: (2)

exactly...thus, your car does not have rev-match. Do that in a car that does have it, and the tranny will automatically blip the throttle to bring the RPMs up for the lower gear's engagement

Initial B

iTrader: (2)

The paddles are definitely marketed as paddle shifters, so Lexus' choice to dumb-down their manual function to become just gear limiters is just sad and misleading.

I knew what they were when I bought the car, but couldn't justify taking out a loan to cover the $20k difference to get into an IS-F for this feature and the better front seats. Don't care too much about the 5.0 since it sounds like a NASCAR motor. I'm happy with the 3.5.

I hope (and somewhat expect) the next gen of products from Lexus does not deliver false 'sportiness', or else the competition will leave them further behind and I will move to another brand.

Toymota

I'm sure they could do this for little to no incremental cost, but the Lexus marketing department wants you to pay even more good money to step up to an IS-F for these features...

Or you could be entrepreneurial and engineer your own transmission control unit, then sell it for $$.

Toymota

That's what I meant and what you wrote backs it up. By having your foot on the gas pedal, you are doing the rev match yourself.

chikoo

My 2003 mazda6 stickshift had that blip feature where the computer would gently blip the rpm when I disengaged the clutch so that the gear engagement wouldn't be such a shock. Too bad it was not a very good implementation and it was eventually removed in subsequent ecu flashes.

GrandSedanFan

iTrader: (1)

This thread makes baby Jesus cry.

If the car had rev match downshifting, you would be able to brake to a stop while flicking the left paddle and feel no drag between gears.

When you're accelerating and you flick the left paddle, all you're doing is the same thing the car does in D when you mash the gas. It's kicking down. Your right foot is opening the throttle, not some trick transmission tuning. Get in a normal PRND321 car, go to pass someone on the highway and pull the shifter from D to 3. Same effect.


HOWEVER...in ECT Power mode, the car will aggressively downshift when you brake hard. This is the first time I've experienced this, and it's amazing on backroads and on a road course. If you're hammering the car and you stand on the brakes into a corner, the car will drop 2+ gears and put you around 4k rpm to power through and out of the next turn. This, however, has nothing to do with the paddles. Leave the car in D for this.

chikoo

Too late. Everything has been sorted out. The IS 250 does not have rev match feature. What I experienced was engine rpm shooting up as a result of my mashing the gas pedal during gear change.

06isDriver

ahhhhh.....I love the smell of a resolution in the afternoon.

chikoo

I am all for it man....i just like a spirited discussion.