Best Throttle mod ever

[sspak9]

I just finished it, with pedal in place and using an offset screw driver. I was able to fine-tune it so that there is virtually no dead spot while keeping the idle rpm near what is was before.

Wow ! This is how a "normal" stick shift should feel like ! I took it out for a spin and for first few shifts, my foot was used to pushing down a bit further on the gas, but after I got used to the responsive accelerator, I was enjoying the "new" Forte SX. I can see where gas mileage would suffer, because you want to push the car... Man, the gear shift feels so natural and so effortless.

If Kia is monitoring this forum, they should send out a TSB telling the dealers to make this small "fix" to at least the manual transmission equipped Fortes !

[SteveL]

Originally Posted by tampajoey

hahahah i havent driven a stick in 15 years.....
and here i am choking or over reving and chirpping tires.....
just waiting to get a ticket-...got all the ricers looking at me at the next light....but they think i wanna race them.........
buddy of mine- took him for the first passenger ride....at traffic lights- he was waving his hands around saying stuff.......
i asked him- WTF are you doing.........
he says....i am the next airbender- trying to get you room to launch this thing..............
lol- looking back on what the circumstances were- (less than 2 hrs driving my new car) - yeah- he saw that i needed a lot of room from launch or i was getting right up within 6 inches of the car at the stop light.......
i gotta admit- i've gotten real quick on the emergency restarts.......
esp. now that i remember to step on the clutch and not the brake in order to get the igntion fired up..........lol..

houston we have lift off )

no stalling or high rev's for me anymore, once I made this mod it has been great ever since

[@cUr@-TL]

Just did this mod.. adjusted it about halfway and it seems perfect, no deadspot, idle is the same as it was before, etc.

I'm very happy with it!

[Enviros]

Originally Posted by ForteSX2.4

I don't mind helping out, but...THANKS to Enviros for finding this!

Again it was my pleasure to help out! I'm bored today, i might go tinker with the car and see what else i can dig up...LOL!

[darkfroggy]

any tips for my model?

[jserrent]

Hi guyz....nice to find this discussion/fix. I performed the adjustment today on my son's new Koup 6-speed, which was really jerking me around getting out of first gear until I made this adjustment. The manual feels "normal" now, you don't have to rev and get your head snapped back taking off !!!!

Things I've been watching but don't follow:

When looking at the unit, not removed from the car, the adjustment screws were set dead center in the small curved adjustable area in the plastic cover. I loosened the screws, twisting the cover to the left...to its max position.

My son was the "Tach Man" ( It would have been nice to know what the spec idle speed should be on the Kuop in neutral and with the clutch in....I think the Koup might have a slower idle setting than the sedan....)

I slowly reversed the direction until the idle fell back to about 750-800. This is where I tightened the screws. The top adjustment screws ended up being about 1/16" from the maximum left twist setting. This seems to be the sweet spot.

Now you guyz got me nervous with all this talk about advancing the timing, burning the plugs out etc. If this were to be a fixed setting that is to be left alone...why would Kia have created the plastic cover with left/right adjustment slots......???? The answer is simple....to drive the car this way for 2 or 3 years and then have a TSB come out and tell the techs to twist the cover to adjust the throttle.....!!!!

Way back when....we always adjusted timing on our cars just far enough ahead until they backfired....I don't remember anyone frying anything. But there was a world of difference in the car's response!

And lastly, this engine has variable valve timing. How does all of our throttle tweaking jive with that...???

Nice meeting Ya.........

[applejedi]

I personally don't feel comfortable trying this on my own. Is this something my dealer would do for me if i requested it?

[rpps]

I have been reading about this mod for a while now and I'm very interested. Is this mod for only the SX with the 2.4 litre engime ?, I haven't noticed any dead spot with my car 2.0 litre Koup . If I press on the accelerator pedal with my fingers you don't have to press it far before you have contact.

[ForteSX2.4]

Originally Posted by rpps

I have been reading about this mod for a while now and I'm very interested. Is this mod for only the SX with the 2.4 litre engime ?, I haven't noticed any dead spot with my car 2.0 litre Koup . If I press on the accelerator pedal with my fingers you don't have to press it far before you have contact.

We don't know about the Forte/Cerato outside the USA. On the USA models we found the deadspot -- I did at a Kia Dealer on 2 Koups. Easily 3/8" (about the thickness of an ink pen) before the engine responded to the pedal input. We also watched it on the computer hookup -- engine response at 1.0 volts, just as the specs show.

Too much pedal advance simply tells the ECU the throttle is open when it is not. With the adjustment full forward my engine surged at idle (auto) and the timing was advancing -- IMO will create extra heat with little advantage.

[rpps]

Thanks for that, I will test mine again today, but I haven't found any dead spot or lag it's pretty touchy on the gas pedal when pushed in.

[jserrent]

Since the 2 days I adjusted the setting in my son's koup the idle has returned to 600 rpm...I assume the computer compensated and relearned the values. The car takes off as smooth as butter.....I mean smooth....no jerking, reving, etc. I really believe that these cars , especially the manual transmissions, are at a default setting as far as the APS setting goes. Each car isn't calibrated for it's best accelerator/clutch response......and that's the reason for this room built into the plastic cover for movement in either direction. Because they are so new the complaints are just starting to surface, it will be interesting how the dealer would adjust the car's response to remedy the jerky take off problem....we'll see......!!!

[MaxD]

I just finish this mod. NO MORE DEAD SPOT

Thx Enviros

[cearick]

The Kia Dealer told me that it's normal for the dead spot. They said it was a delay and it was fine. Such BS!

[Rainyraven]

Originally Posted by cearick

The Kia Dealer told me that it's normal for the dead spot. They said it was a delay and it was fine. Such BS!

figures,

I just love how the dealers are so carring about there product! lol

[topspin]

Is this mod valid for both automatic and manual transmissions?

I've test driven the car many times. The clutch/gas glitch bugs me enough that I'm considering getting an automatic. But with this mod, you all seem so happy. So I'm considering sticking with the manual in the hopes that Kia will do this mod for me. I don't feel too comfy doing it myself.