Awesome man! I appreciate this a lot!

 

I just download Torque a couple days agos, and I noticed too that the throttle won't open anymore then your new number, 83%.

I'm curious about doing this mod to see if I can reach more than that.

 

nice one :beer:
will have to bust out the drummel tomorrow

 

Interesting.. I wonder if there is an aftermarket part for this too


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Sprint Booster

There's an aftermarket switch & control box you can get that just piggy back's to your gas pedal, it has 3 settings for the exact issue that's being discussed here.
You can leave it at one spot for stock, then switch to the next (colours if I remember correctly) which is moderate which gives you quicker throttle response & feels little quicker next is full which gives you the best possible throttle response you'll ever get as well as alot quicker off the line etc.
I found it when I also hooked up my code reader android app & noticed that the throttle only went to 90% approx, I'm sure it's called Sprint Booster when I saw it almost 2 year's ago it was $200+ so couldn't justify that much for the mod. Probably just setting the tps or the pedal sensor to respond with a light touch will do almost the same, it'll take any delay out of the throttle response at least.

 

I noticed that there is a limit on the opening %, it is 83.9. I grinded more but it wont pass that number. This is the Torque app screenshot https://www.dropbox.com/s/f9l6xpm2ho...3-12-44-59.png

Interesting. I would daresay that there is a limit within either the throttle body (physical limiter) or the ECU software that does not allow full 100% opening. It may even be detrimental to do so: it could be that Hyundai discovered that with the mechanism they use that a "full open" situation possibly hangs up, and therefore they limit it both in the pedal and the throttle body.

Be careful if you attempt a similar "surgery" on the throttle body itself. This mod on the pedal is probably completely harmless (other than the slight weakening of the throttle pedal-arm and small risk of breaking it under a heavy foot), but I would exercise caution on a part that is critical to the operation of the vehicle, yet you have absolutely zero direct control over.

To those mimicking this mod - I would be more inclined to whittle-away a bit of the throttle stop, if there is nothing "critical" beneath it, rather than the pedal-arm.

Happy Grinding....

 

Yeah I'm going to grind down the stop at the back instead of the pedal. After you test it to see if it changed anything

 

My biggest concern with this mod is safety. I'm thinking of what happened with the toyota issues they had with their accelerators. Not sure I want venture into this mod without talking to a Hyundai tech first or a knowledgable mechanic. Just my thoughts.

 

A Hyundai tech is going to tell you not to do it. But a Hyundai tech is going to tell you not to do just about any mod to the car, so that isn't a good way to look at it. This should only be done by someone who understands the mechanics behind it. Obviously grinding down a stop isn't going to make the pedal stick though, so this is a relatively safe modification unless you accidentally break something else while you are down there... And in that case, you'd realize it right away because your throttle wouldn't work correctly! ^_^

Now, I'd love to see a before/after dyno of this mod to see if opening the throttle body that much more actually does anything for the engine. That's a pretty expensive undertaking though, so I don't expect anyone to go out and do that unless they have access to their own shop or something.

 

I did this on mine sunday.....

no change in throttle opening. even reset the computer just incase it needed to relearn. nada,nothing :dry:

it is the ecu limiting the throttle opening. this is what I thought, but was worth a try. will add back the 1/4ish material back since it changed nothing for throttlebody opening. will use epoxy or simply glue some hard rubber to make the pedal travel the same as before

 

Lame. Hopefully the ECU tuning can fix this then though.

 

someone has to blaze a trail

and I verified the tb did not open anymore the it did before. so maybe the ecu programing that seolful and others are coming out w/ will fix this.

 

Whatever you do, do not let the sensors get dirty or touch them or else it will affect the performance of the car.

Sometimes I wish cars were still driven by cable than wire...

 

Sometimes I wish cars were still driven by cable than wire...

x 2

 

will there be a tune available for the ECU?

 

Yes, a few companies are working on ECU tuning right now.

 

I do believe Btrcc and SFR are currently working on it , correct me if im wrong but i think both may be out by now

 

how about using Throtlle Controller..?? like Pivot

 

Throttle controller is around 350$ same as the tune but with the tune you will get more power. Although a controller will give you more options to select sensitivity

 

in here, my friend already use a throttle controller for hyundai accent 2012.. he use Shadow brand.. only $150

 

I bought the elm327 adapter almost 2 year's ago just after I bought my 13 Elantra just for shits & giggles to see how it worked, that was the first thing I noticed was the throttle only went to 89.9% no more. I guess it was too be expected seeing the car was made to be a gas sipping economical vehicle yet it still made me wonder how to get around that or what!?
The throttle plate is where it really matters obviously, if the plate is only opening 3/4 at full throttle then you know your issue.

 

85% should be WOT or so. At least it is on my Genesis Coupe.