Hey, I’m having the same issue on a 2017 F-Sport AWD. I’d really like to be able to go WOT in Auto (D) without it bouncing off the rev limited for 2-4 seconds. This drastically kills the performance of the vehicle and is a nuisance.

Surely after all these years, there’s a solution to this other than using manual mode. The shifting delay is horrible now.

 

I think its just putting down to much power to leave in automatic. That's a swag on my part, I can sacrifice having to manually shift but I need my paddles to work. Putting the car on the track this spring so the paddles are really important part of this.

 

I really hope your kidding about the “too much power” comment lol.

After talking with them a bit, they sent me a different tune file. Apparently in the new flash, the rev limit has been changed to 7,000 or stock. They never really clarified which limit has been set although I did request the 7,000rpm limit if the 7,200rpm limit can’t be set properly. The car shifts at different rpm limits in each gear (also affected by drive mode) but at least it’s shifting now so I guess it’s better than when it wasn’t shifting at all.

I do recall reading about a 7,400rpm rev limit. It makes me wonder if there’s different settings in the ECU file that changes the shift point. I know RR states it’s in the TCU, but I’m wondering if the tune file I was sent was incorrectly set to shift at 7400rpm while having a rev limit set to 7200rpm. Then from repeatedly hitting the rev limit, the ECU would initiate fuel cut prior to shifting into the next gear after recovery. That would explain why my car would just bounce off the 7200rpm for 2-4 seconds before finally shifting automatically while in automatic (D) mode.

TBH, it would be very nice if we could actually see what maps/settings are being edited by these companies. I’d guarantee the tuning for the platform would have progressed substantially further along than what it has. I’ve had years of experience tuning Evo’s, guess I’ve just been spoiled with ECUFlash.

 

Thanks for the update JT1826! 👍🏼👍🏼

 

no prob at all. Just trying to provide a solution to anyone who experiences the same issue on the 2017+ IS350 AWD model (may also apply to the RWD model).

I did forget to mention that while in manual mode, I too experienced the same issue where the car would not shift manually until it reached the rev limit. I would click the paddle and I would see the physical gear number change next to the M# display. Despite that change, the car did not shift gears as indicated by the gear selector option bar (F-Sport gauge). I did notice that it would sometimes up shift if I changed gears again but would stay 1 gear lower than was selected. The way this worked is as followed:

manual mode selected.
1. Start driving in D mode
2. Switch to Manual mode. Car auto selects 2nd gear and displays M2 on dash
3. Use paddle shifter to select M3, ECU stays in 2nd gear
4. Use paddle to shifter to select M4, ECU shifts into 3rd gear

This is a very strange issue but once i installed the new tune file they sent with the lower rev limit, it fixed this issue. While driving in manual mode, the ECU switches to whatever gear I select with the paddle.

Another issue I had was that I was unable to select Sport+ mode in the car after flashing the first tune file. It was almost as if the F-Sport option was disabled. Not sure why this happened but after flashing the 2nd tune file, that issue was also corrected. All of these issues further give reason why I want to see what maps/settings are available for adjusting with whatever software they use.

 

I like your explanation a lot better. I have read on line that there may be a TCU tune coming out in one search. I will reach back out to Simon and get my tune adjusted since I can not get the paddles to work.

 

RR Racing sent me another tune after NINE emails from November 23 to a day ago. I offered to video the changing of the gear in the dash but the transmission not changing gears. I hate to put a lesser tune on it but I hate not changing gears more. I tried what JT1826 said about changing two gears and that is not a 100% solution for me sometimes it works sometimes it doesn't. I don't know why me and JT1826 are the only ones with this issue but that seems to be the case.
from: Simon Rabanto
to: me
Mon, Feb 1, 8:34 PM (18 hours ago)[size=13px] [/size]

Hi Justin, No one ever complained that there is300 does not shift with paddle shifters with this tune file. However, please try writing the enclosed updated tune, and let us know how it works for you.

 

How’s the new tune file working for you? I agree with you on wanting the car to always shift at 7200rpm, but I’ve been ok with mine shifting at 7000rpm since the drivability issues are no longer present.

I’m thinking this issue may be more or less affecting 2017 models only. I have an 2017 IS350 F-Sport AWD.

 

I have had the tune on my 16 IS300 since July and have noticed personally that when I try to shift with paddle shifters it doesn't shift. It happens rarely but is annoying when it does happen. I usually stick to shifting with my shifter instead.

 

So when purchasing the tune file from RR, is the revised tune offered for 2017s a 7200 rpm limit or do 7000 rpm? I’m assuming we’ll have to request the 7000 rpm to avoid any issues you were originally having?

 

I have kept the original tune, I upshift twice if I normal drive mode. If in manual mode it has started shifting on time.

 

The tune I was originally sent was a 7200rpm limit. That tune was plagued with drivability issues. The second tune file they sent me is apparently set to have a 7000rpm limit.

Some additional observations on this tune:

1. Different shift points present depending on Drive mode. (In Normal mode, car will shift at 7000rpm at WOT in 1st gear, it will shift at 6800rpm in Sport/Sport+ in 1st gear)

2. In manual mode, the car WILL auto shift to the next gear as if it’s in auto (D mode). If you turn TCS and VSC off, then it will bounce the rev limiter and only shift if the driver physically shifts using either paddle or stick shift regardless of throttle condition.

3. Despite the #2 auto shift issue in manual mode, the car will NOT change gears on you while driving if you are just cruising. You can be in 3rd gear and double tap the paddle and it will shift to 6th gear. You can drop speed to 25mph and it will not shift down automatically. Same if you are at 25mph in 2nd gear. You can upshift to 5th gear and the car will not try to downshift back down to 2nd gear. The auto shift issue only happens when the car reaches the rev limiter unless TCS/VSC is turned off.

4. After additional testing and observation, the issue where the car would not shift with the paddles in manual mode (issue with the 7200rpm file) has been confirmed to be fixed 100% with the 7000rpm tune file. I can shift on demand at anytime in manual mode and the car shifts.

 

The above mentioned points (#1,2,3) are referring to the 7200 rpm tune correct?

To recap - the 7000rpm tune has 0 issues that I’d need to worry about. I’m hoping this tune maintains the capabilities of sport/normal driving along with paddle shifter/shifter functionality.

- thanks.

 

The bullet list is all in reference to the 7000rpm tune. For observation #1, I cannot comment on if that was present in the 7200rpm tune. When I’d go WOT, the car would just continuously bounce off the 7200rpm rev limiter until it finally shifted 2-4 seconds later.

You are correct. I’ve had no issues with the 7000rpm tune. The only things worth mentioning about it were was was listed in me previous comment.

 

The non shift issue with paddles has been happening to me even prior to the tune.

Most noticeable with traction off and hard in 1st gear generally spinning tyres it will not up shift just sit on the limiter.

Always a pain, guys with the 7k tune, will the car now shift at WOT in auto mode, getting sick of the shifting.

Would love a transmission tune in these things, higher line pressure etc.