KSeriesTuner

Was a simple update. Many people seem to be confused about the unlocking process and we wanted to make it easier.

Funz51

Has anyone seen the 1.0.9.8 install yet? The Ktuner sw does not recognize the update yet.

Oil Stain

Okay, I caved in and bought the K-Tuner today. I hope to get stats before I install the tune so I can compare my results. I know most of you have the A-Spec AWD vs my 2020 Advance FWD, so I'm looking forward to see the differences between the two.

markm929

Welcome aboard. Hope you like it as much as I and many others have.

SpaceBot

That's what I plan to do as well. I have a spare smartphone, so I plant to mount it and run the Tuner View App via Bluetooth from the KTuner 1.2. I want to monitor first before actually flashing. Plus I'm in California so....emissions concern me...passing smog and all. Plus, I'm still not quite sure how my Acura warranty will be effected with KTuner. I cannot find a straight answer.

markm929

So the quick adjustments feature has been out for a few weeks now, be interested to hear from those using it what they think? What settings are you using and what's the response to those settings? Also, what is the hit, because I now there is, to MPG?

Funz51

The MPG is very subjective. Keep your heavy foot off and you will get better MPG. I just don't get enough time on the road these days to do comparisons. Once we get control of this 'bug', I will have the reason and opportunity to get more subjective results. As mentioned earlier, these settings don't increase torque or hp, it adjusts how the torque comes on. I need to play more.

markm929

Understand the subjectiveness of MPG, but wouldn't the torque ramp adjustments also have an effect? The sooner the turbo ramps, regardless of foot mash, the more fuel would be consumed, no? I know it would be fun to crank the options to "11" at a cost, just wondering if anyone had played around extensively yet. I hear you, the "bug" definitely has minimized my road travel as well. I am no gearhead, just a weekend enthusiast, so I can't say I completely understand all the adjustment options. Stay healthy everyone!

Padre Dave

I run Sport+ most of the time and am getting 21.6 average in city/freeway driving. Im heading across the Phoenix Valley this afternoon and back and expect to get 24 or so. That is cruising close to 80mph most of the time, as that is our “go with the flow” speed around here. Obviously if I stayed around 65mph I would get closer to 28 mpg. The latest adjustments are not that noticable to me, from the last update.

Oil Stain

So, its been about a week since the Ktuner install. I'm loving it. I'm using stage 2, haven't tried stage 1 and I do not have a desire to. I'm very happy with stage 2. My quick adjustments are factory throttle response. I'm happy with the way Acura has them setup. The turbo response is set to 3 the highest and the boost target is at aggressive ramp 1. Both the wife and I are VERY happy the way the car performs now. Like others have stated, the RDX should have been this way from the factory. Hesitation is just about gone. Before, just trying to pass or merge into traffic used to be somewhat un-nerving, not anymore, both on highway and around town.

Yeah, we spent a lot of money on our cars and we didn't quite get the driveability some of us wanted but, for $449.00 to buy a KTuner to address these issue is well worth it to me and I'm sure most would agree.

As far as MPG I might be taking a little hit, maybe .5 - 1 MPG if that, it's nothing in my book. I enjoy driving the car now more then ever, so whatever MPG hit I take is well worth it.

Hey, I'm now burning rubber up to 3rd gear. Damn, I need some drag radials!!!

Burger Steak & Eggs

I have to ask.....yours is two wheel drive?

Oil Stain

Yes, 2020 RDX Advance FWD.

SpaceBot

What kind of experience would Stage 2 bring to the Advanced model with SH-AWD and the Damper system?

Funz51

Stage 2 ktune is a engine management product. Does not affect suspension. You will see the same experience the rest of us have. A whole lot of fun...

BerwynBill

I have a 2019 Advance SH-AWD and just flashed to Stage 2 with quick adj maxed except turbo ramp up which I have at Improved 2. Long story short, I love it! Sport is great; plenty of oomph and just all-around fun to drive. Sport+ is quite a kick in the pants, especially when you lay into the gas in a turn and the power rolls on. Really makes the RDX suspension shine. This is really what the RDX needed to be from day 1.

I recommend it to anyone who wants their RDX to be more fun to drive. Just remember to do the throttle reset procedure after you flash. Thanks to all on here who shared their knowledge of the K-Tuner system.

Taz69

How do you do a throttle reset on the RDX?

Funz51

1. When ignition/accessory are off, depress the throttle pedal all the way in, . Then, turn on the car to ignition mode.
2. Keep WOT until the check engine light disappears. It took about 15-20 seconds.
3. Power down the car to off state.
4. Press brake pedal and start the car normally by pressing the engine-on button.
5. Procedure is completed

KSeriesTuner

I've never had to do a throttle reset on ours. What led you to do so?

SpaceBot

To add.... Is it recommended to do the reset before and after flashing? Or just after?

BerwynBill

After I flashed to Stage 2, I noticed a little bit of hesitation when I would press the throttle. I saw earlier in this thread that a throttle reset would fix it and it did.

Funz51

i have done before and after and both improved response I thought.
I have never seen a 'recommendation' from anywhere.
I do recall a fellow tuner suggest before to ensure the ECU had any inputs fixed before burn. I don't think it matters cuz the burn is just a burn, it is not learning.

catalytic_ca

I've read almost the entire thread, but I haven't seen any comments specifically on the impact to ACC behavior. So how does the tune affect the smoothness of Adaptive Cruise Control system?

I sometimes drive long stretches in stop and go traffic during rush hour on the highway and find the RDX's Adaptive Cruise Control too aggressive with both acceleration and braking. I would imagine that the ACC system is calibrated to the factory throttle response. But if the throttle response is greatly improved, the ACC would accelerate (even more) aggressively in stop and go / low speed follow situations, no?

Would appreciate any feedback on this.

Funz51

I would be happy to try out the acc next time I need to be in traffic, nowadays far and few,

KSeriesTuner

ACC should function like factory!

specie

spent about an hr in traffic with the acc on and it feels similar to factory. That’s in sport mode; didn’t try comfort mode.

Cuzz

Ok, so after you install the tune, how do the Comfort, Sport, and Sport+ modes behave relative to the pre-tune modes?
I think that what I'd like, is a Comfort mode that remains unchanged for the wife and family to use, but improved Sport and Sport+ modes.
Also, does the tuned Sport+ mode not use the last couple of gears in the transmission? I'm thinking that if the speed limiter is removed with a tune, then I would want the extra gears to be used when cruising at higher than "normal" speeds.

catalytic_ca

Excellent, thank you. Ah, yes, also still partial work from home in many places due to covid...it will probably be a while until I'm in stop and go again.

catalytic_ca

Interesting. Would you be able to elaborate on why that is the case, given that the throttle response and turbo spooling parameters have changed significantly, and one would assume that ACC would calibrated to the factory parameters.

Not saying I don't believe you. I'm just really curious as to how it all works.

Maybe something to do with the ACC being a closed loop feedback system where the throttle inputs are adjusted to a target acceleration rate and not throttle position?

BerwynBill

I believe your last statement fits the bill. My understanding is that the logic circuits that govern the ACC respond to the multiple sensors in for vehicle and powertrain response and adjust accordingly.

Hvt

Anyone living in California with this ktuner installed on their rdx? Just wondering if I should ktuner it.

Thanks.

SpaceBot

Im with you on this as I'm in California too.

sonyfever

From Hondata user, but should not deviate too much from KTuner. With stage 1, ACC behaves normally. With stage 2, the extra boost/throttle response can make ACC feels jerky. For example, the ACC is tuned to "catch up" with car in front quickly. So you can find the acceleration a bit rough (too quickly) with stage 2. And you will find the car uses quite a bit of boost when encountering even just slight incline during cruising. The worst case scenario is when starting from standstill when you press resume, the car would roll slowly in 1st gear, then accelerates like the car hates you in 2nd gear.

My solution is to manually intervene the speed limit to smooth things out in Sport, or to switch to comfort mode. (Hondata uses stage 1 map for comfort mode)

sonyfever

Sport+ is locked to 8 gears. The wind resistance of this car is quite big, so you might end up not achieving top speed in 10th gear because that gear is very high=not enough power to pull through air.

Funz51

no reason to 'cruise' in sport+. Sport+ has great reaction time at lower to mid speeds, ramps, autocross, etc. Comfort/Sport does just fine at cruising speeds. you also get to use all 10 gears, and paddle down whenever you feel the urge.

JB in AZ

I'm perfectly happy with the acceleration of the RDX, but would like more customization of the drive modes. Does either K-tuner or Hondata allow one to select the suspension (I have Advance) and steering settings of "Sport+" mode, yet leave throttle, transmission and turbo settings in "Comfort" mode? I know. silly question.

Funz51

nope.
no suspension, steering changes that I am aware of. The ECU only affects engine performance.

JB in AZ

But, could one set it to Sport +.(for the steering) and have K-tuner set to "comfort"?

Taz69

No.

JB in AZ

Thanks...A missed opportunity for sure.

BerwynBill

I put about 500 miles on the highway yesterday and have stage 2 with the quick adjustments set to max except turbo ramp which is set to improved. ACC worked as normal, didn't really notice anything different when it would kick in. Got about 26-27 mpg withe it set to 70-75 most of the time.