Throttle timing adjustment - It works!

1.8-liter VVTL-i (2ZZ-GE) and VVT-i (1ZZ-FE) engine, transmission, exhaust, intake, and performance tuning discussions
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THE VIBERATOR
Posts: 281
Joined: Thu Feb 14, 2008 12:27 pm

Throttle timing adjustment - It works!

Post by THE VIBERATOR »

Ok here's the deal. I was fooling around with my buddy trying to look for some cheap but good looking mods to do on my vibe. We installed a blue dome light and also picked up the xenons i had longed SO much for. But i am not installing those today . What we did find though was how to adjust the throttle on your vibe to make it more responsive and give you more power. We found the instructions on the newcelica forum. Basically all you do is find the main throttle (not the cruise control throttle). Then you loosen the top screw on the throttle, and then tighten the bottom screw. And then retighten the top screw. Also there is a screw that you need an allen wrench for, to move the throttle's position just a bit. You tighten that so it moves down and hits the throttle, which is in a lower position than before. Its confusing i know. If you want it explained more clearly, go to newcelica and find out. I'm not sure about the exact page because this was at my friend's house. I can try to find it and post it up for you. What this does though, it may or may not increase your warm idle. It didnt for me because my engine's computer keeps it at 700 no matter what i do. But for base vibes, you wont be able to tell if the idle is higher or not. They say 1000 is the perfect idle. It is more responsive, more aggressive, your shift points are 4 mph lower (which means more power down low) and we found out that the needle will shoot past 100 like you're doing a 0-60 test. I hit my top faster than i was able to before (114). So this little tuning job gives you more top end as well.Wow that was alot. I hope you're all able to experiment with this and have the same results that i had!
2003 Vibe Base - Sold2005 Corolla LE 5 speedcustom short ram air box6k HID kitIn memoriam of the Vibe, may you rest in peace:http://www.cardomain.com/ride/3168634
djb383
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Re: Throttle timing adjustment - It works! (THE VIBERATOR)

Post by djb383 »

Does this apply to a drive-by-wire throttle body?
'05 Lava Tutone base, Pwr Grp, Moon & Tunes, 16" alloys, Auto.....Yep, it's gotta HEMI
northvibe
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Re: Throttle timing adjustment - It works! (djb383)

Post by northvibe »

Quote, originally posted by djb383 »Does this apply to a drive-by-wire throttle body?no it doesnt, here is the DWB reset:http://forums.genvibe.com/zerothread?id=25238This can also be helped with a throttle rotor from Weapon-R. I did both, put the throttle rotor on then re-did the cable so it idled properly.
djb383
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Re: Throttle timing adjustment - It works! (northvibe)

Post by djb383 »

Yep, I've tried that.......couldn't tell any difference.
'05 Lava Tutone base, Pwr Grp, Moon & Tunes, 16" alloys, Auto.....Yep, it's gotta HEMI
BlueCrush
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Re: Throttle timing adjustment - It works! (THE VIBERATOR)

Post by BlueCrush »

So you are just tightening the throttle cable or are you increasing your idle? If your tightening the cable then that works for throttle response when pushing the gas pedal. If you are increasing your idle at all then it will recalibrate itself and go back to where it was over time even though you physically changed it.
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northvibe
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Re: Throttle timing adjustment - It works! (BlueCrush)

Post by northvibe »

Quote, originally posted by BlueCrush »So you are just tightening the throttle cable or are you increasing your idle? If your tightening the cable then that works for throttle response when pushing the gas pedal. If you are increasing your idle at all then it will recalibrate itself and go back to where it was over time even though you physically changed it.true story, the yota ecu is lame....smart like that. hence the piggy back ecu moaning and groaning.
kevera
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Re: Throttle timing adjustment - It works! (northvibe)

Post by kevera »

I'm surprised you didn't throw a code when you touched the set screw,I know mine did.
June '07 VOTM Sept '07 MOTM HCVO /HCMO The Red Devil
northvibe
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Re: Throttle timing adjustment - It works! (kevera)

Post by northvibe »

Quote, originally posted by kevera »I'm surprised you didn't throw a code when you touched the set screw,I know mine did.the screw that stops the throttle rotor? like for idling? cuz ive moved mine around a bunch when i put the bored TB on and nothing bad became of it.
kevera
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Re: Throttle timing adjustment - It works! (northvibe)

Post by kevera »

Mine threw a code for throttle position sensor.Had to set it back to get rid of the code,you were lucky then.
June '07 VOTM Sept '07 MOTM HCVO /HCMO The Red Devil
northvibe
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Post by northvibe »

maybe mine was used to running rich? idk I had a cai and throttle rotor at the time i switched to the bored TB.
kevera
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Re: (northvibe)

Post by kevera »

I had both as well,it just didn't like it.I wish it wouldn't have thrown a code,because it idled soooo smoooth.That's why they call it a Vibe then.
June '07 VOTM Sept '07 MOTM HCVO /HCMO The Red Devil
Whelan
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Re: (kevera)

Post by Whelan »

I adjusted my cable months ago. Nothing really noticeable in terms of power, but throttle response is better. Over time the cable gets slacked from the constant pulling so a little adjusting is good. You tighten it too much then you start making a higher idle. The key was to tighten it just enough so a light pull would open the throttle, otherwise your wasting gas.As far as power, your not really gaining any secret locked away power like you would if you have a 1.8T turbo Jetta where a $400 chip could net you another 50hp very easily. Responsiveness is increased as is throttle play, but for power, you won't see anything on a dyno to show that.
2012 GLI Autobahn 6MT
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