More aggressive shifting?....

[scotttisha]

There has to be a way to get our cars (V8 with ZF trans) to shift faster or more aggressively. I swear, I think this car would be at 5.0 seconds flat, 0-60 if they would have put a "sport mode" switch in for us, to change the dynamics of the trans.

I'm going to do some research and see what I can find...In the mean time, chime in if you know anything already.

Sscott

 

[scotttisha]

Already got a quick reply from a company out in Texas that rebuilds these trannies....All software driven, so need to find a company (and they are out there for other vehicles) to tap into the existing software for the tranny and get them to tweak it. Apparently, the computer for the tranny is in the bottom of the tranny...

More to come..

 

[JDC]

Already got a quick reply from a company out in Texas that rebuilds these trannies....All software driven, so need to find a company (and they are out there for other vehicles) to tap into the existing software for the tranny and get them to tweak it. Apparently, the computer for the tranny is in the bottom of the tranny...

More to come..

Looking forward to your info.

 

[scotttisha]

I'm curious to see what a Hyundai tech would know about changing or modifying the software. I know the dealership I use only has one or two techs allowed to work on the Genesis. One of them has spent time in Korea. (according to what he told me)...There has to be a way for them to adjust or tweak the software, as a means to correct issues under warranty. I'll have to see how much they know and how much, if at all, they can tweak shift points and shifting speed.

Scott

 

[RLREILLY81]

Now would it be safe to assume that all the Genny trans are computer driven? If so there would be a heck of a market for a way to set them to get... higher performance, better gas mileage, local driving, highway driving, track, etc. And I would also go on a limb and assume that if the trans is a computer driven platform that there would also be a "reboot" to it to reset factory settings, there by not voiding warranty?

Just some thoughts.

 

[Sayantsi]

Yes, the car is drive by wire - its all computer controlled. You'll need an ECU and TCU program to change how aggressive the car drives.

 

[Gambler]

It certainly CAN be done, but how difficult it is depends on a few things. After doing some research there are fairly inexpensive (relatively speaking) devices to read and write from the ECU and TCU chips. The hard part is knowing what addresses in memory are what. There are certainly shift points programmed onto the TCU, but that information is not openly available to my knowledge. If you knew what to modify, doing so would be fairly easy. Let us know what you find out.

 

[ASHDUMP]

This really isn't on the topic, but I've started using the shiftronic a lot more during country road driving. Between 35 and 45 MPH the tranny shifts up and down constantly... If I keep it steady at 40 MPH it will constantly down shift and upshift. It is quite annoying... So now, I just leave it in 4th gear between 35-45 MPH.

Starting out in 2nd is kind of nice too.

 

[MrB0462]

It certainly CAN be done, but how difficult it is depends on a few things. After doing some research there are fairly inexpensive (relatively speaking) devices to read and write from the ECU and TCU chips. The hard part is knowing what addresses in memory are what. There are certainly shift points programmed onto the TCU, but that information is not openly available to my knowledge. If you knew what to modify, doing so would be fairly easy. Let us know what you find out.

If you are referring to Diablo type devices they need a pre-existing tune to change the MAP. If Diablo or some one else has not created a tune it would have to be done by a tuner specialist. Would suggest going to a person who does GTRs, STIs, etc.

A really good tuner specialist could also modify shift points by changing rpm levels and other factors. But it would not be inexpensive. $ 100+ per hour for a custom tune is not unusual and it could take several hours worth of work.

However it would void the warranty. I already have fast cars so I would not have the work done.

 

[scotttisha]

Yes, I'm aware that the trans is computer driven. There are companies out there that make plug-in-play devices for cars/trucks to change transmission characteristics, but I have not found anything or anyone (yet) that specializes in cars with our transmission. (ironically, these were geared towards American cars and trucks)

The thing that kind of kills me here is Hyundai knows all of the important info and I have to imagine it couldn't take that much effort to add a "sport mode" button for the times we want to "hot rod" a little. Even if they had done something basic like giving us the option to choose either stock or sport.

I'll keep looking, surfing, making calls, and see what I can find out. I still want to talk with the Genesis Tech at my dealership and see what he knows or what he has been taught during his trip to Korea.

Scott

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[nearwater]

The thing that kind of kills me here is Hyundai knows all of the important info and I have to imagine it couldn't take that much effort to add a "sport mode" button for the times we want to "hot rod" a little. Even if they had done something basic like giving us the option to choose either stock or sport.

Scott

My thoughts exactly. That's the least they can do if they want to call it a 'sport sedan'.

Dan

 

[scotttisha]

My thoughts exactly. That's the least they can do if they want to call it a 'sport sedan'.

Dan

Yep. and 375-380hp is substantial, even in a 4000lb car, so they have the formula for power. Now they need to give us the tools to utilize it.

Think about this:
Here's the stock performance figures for a 2003 Corvette (non Z06)
Acceleration 350 hp, 6-speed manual
0-60 mph, sec 4.9
0-100 mph, sec 11.5
1/4-mile, sec @ mph 13.4 @ 101.1


My car ran a 13.8 @ 103.5 with a very crappy 60' time of 2.1 seconds. What my numbers tell me, is with better traction or a better launch, I would see mid 13's for an ET, but more importantly, my car would slowly be pulling away from a 350hp vette in a drag race, once I did hook up. I've always used "trap speed" to determine how fast my cars are. anyone with drag tires and/or AWD can get there car in the low 13's or 12's, but the trap speed really tells the full picture. to give you an example, I had a 320hp VW GTI that would walk away from cars like the vette and Porsche 996, back in 2003/2004. But at the track, I would sometimes run a 14 sec 1/4 mile (best was 13.1) regardless of my et being a 14, 13.1, 13.8, etc.. I almost always trapped 109mph. The et just verified whether or not I was able to hook up from the start.

I truly believe with the right transmission software, our cars could be 5.0 or just under 5.o sec 0-60 cars, with good tires.

 

[Sayantsi]

All I've seen so far is a Korean company that has cracked the code for the Coupe's ECU that netted a 35hp gain plus I think something like 70 lbft. Once tuners can get into the code they can rewrite for flashes, so its a matter of time thing. Plus, they'd have to think there was interest in doing it for the sedan... but that's just he ECU. The TCU would also need to be cracked to change the shift behavior.

 

[cschuler]

There has to be a way to get our cars (V8 with ZF trans) to shift faster or more aggressively. I swear, I think this car would be at 5.0 seconds flat, 0-60 if they would have put a "sport mode" switch in for us, to change the dynamics of the trans.

I'm going to do some research and see what I can find...In the mean time, chime in if you know anything already.

Sscott

I actually don't know anything specifically about this issue but have thoughts nevertheless. With current technology it would easily be possible to sense throttle angle (Has the driver mashed the accelerator to the floor?) and the current speed and thus determine the shift points accordingly. I'd be very surprised if one could tweak out 5.0 seconds with a mere software change.

 

[mjsmith3]

Any update here?

Love the car but the shifting leaves something to be desired. I'd love to tune it to be more aggressive

 

[ASHDUMP]

Any update here?

Love the car but the shifting leaves something to be desired. I'd love to tune it to be more aggressive

Get a Sprint Booster and let me know how it works for you. I'm trying to sell my Magnaflow exhaust that I just bought... when I do, I'll buy the Sprint Booster.

 

[cheez]

There's more to it than just a tune. Genesis 4.6 uses a taller set of gears at low ends so 5.2~ 5.4 sec is best it could do with 375~ 385 hp as far as 0-60 is concerned. You either need to add more hp & tq or swap out the gear set with a closer gear ratios or decrease the curb weight (static & dynamic weight) if you want faster pickup. 1st gear on the Genesis 4.6 is pretty tall... 5.4 sec is already too good.

 

[Kurt]

Did I miss something? Isn't the manual mode the "sport" mode?

 

[dg_moore]

Did I miss something? Isn't the manual mode the "sport" mode?

"Sport mode" is what it's called in the manual.

 

[gameday22]

When I first got my 3.8L V6 (Premium & Tech Package) it was having an oddball shift hesitation at random when trying to get out of 1st and into 2nd gear. I wasn't getting on it hard or anything, just normal acceleration up to 40-60MPH range and it would high rev. 1st gear (up to 4k-5k) sometimes before bucking hard into 2nd gear......It didn't happen every single time but none the less I took it into the dealership thinking it might be low on transmission fluid or something.

I spoke with the service tech and the car remembers how it's driven (aggressively, easy off the light etc...) then adjusts how the car shifts according to the driving habits of each individual. They went ahead and reset the cars "learning mode" to clear out whatever habits might have been in there from the miles driven by others testing out the car for purchase. Once they did this the problem was gone and since then it's been a very compliant when I put the demand on it to get up and go.

The car also learns your braking habits and will adjust how it uses the engines RPM to assist with stopping.

The car can re-learn for itself over time, but if your wanting an instant clean slate then the best thing you can do is go in and have them reset the system for you. If your in for other services they might even wave any charges for doing this...or if your car is still fairly low mileage it would be covered by warranty I'd think, though not 100% sure.
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