get better acceleration ?

[kty75]

any suggestion ? which part i gotta mod first ?
i dont care abt top speed.
just wanna get acceleration smoothly.

[vodkalush]

I would jump over to the DIY section and check-up on how-to install your own grounding kit....

[KSIbucky]

ignition can help

also theres those smoth shift things

[eTiMaGo]

1) weight reduction, this can be taken to the extreme, removing back seats, spare wheel, etc...
2) lighter flywheel - have not yet seen this done on a Yaris, but would help help!
3) Don't buy heavy 18" rims :biggrin:

[Katana]

The 1-2 are great ideas.

In my opinion it's wrong to put on 18' rims on a 1500cc car.

[eTiMaGo]

oh yeah and 4) Drive downhill :biggrin:

[xfatefailsx07]

5) Keep the A/C off at all times. hehe

[ChinoCharles]

FORCED INDUCTION haha

[ItsMyDaily]

This is my main focus with my yaris as well, however most of the things needed to improve acceleration ill improve fuel economy aswell.

1. Grounding kit
2. Cold air intake(considering you won't be flooring it all the time :biggrin: )
3. Light weight rims
4. a bit of weight reduction

weight is the biggest factor in acceleration. the lighter the vehicle then the quicker it accelerates.

I would have imcluded an exhaust too since it'll help the engine also over the stock resistng piping on the car now....however I won't be adding one until I find one with no done, and with not to much of a noise increase. Anyone have a sound clip of the tanabe???

[kty75]

sorry i am a noob
what does GROUNDING KIT do ?

[ItsMyDaily]

sorry i am a noob
what does GROUNDING KIT do ?

well your motor creates a lot of friction, and the grounding kit helps eliminate that. It helps improve the response, aswell as has at times(depending on the car) added a good amount of hp. It said it helps free up lost torque, and also helps with the electronics in and outside of the car(dash lights, headlights, etc.)

[jeff_o]

well your motor creates a lot of friction, and the grounding kit helps eliminate that. It helps improve the response, aswell as has at times(depending on the car) added a good amount of hp. It said it helps free up lost torque, and also helps with the electronics in and outside of the car(dash lights, headlights, etc.)

how does someone install grounding kit? does it have to be installed professionally? or is it as easy as buying a grounding kit and just following instructions?

[ItsMyDaily]

how does someone install grounding kit? does it have to be installed professionally? or is it as easy as buying a grounding kit and just following instructions?

it's very simple to insall. You can get kits cheap off of ebay, but I think they only come with nstructions as far as telling you what you should ground. No need having a pro install it and wasting more cash, do it yourself. Basically all you do is find the location you wish to hook the ground wire to. Unscrew the bolt or screw that is in the locatio, and then screw it back with the ground in place.

[johnnyfive]

no need to buy a "grounding" kit...just go to a stereo shop, and pick up some bluk large guage wire, and some connectors, and just go at it, double up any grounds you can find, ground from the battery, w/e you want, infact, throw an extra line from positive from battery to your alternator wheil your at it :)

[Katana]

Jeff search in the DIY section.

There is a pile of DIY's.

[Violin]

This month's Import Tuner magazine has a DIY on a homemade grounding kit. "5HP for 99 cents" or some such thing.

[Katana]

99cents?

Anyone who buys it, please tell us what it says!

[ttufrosty]

I am going to put in a grounding Kit into both my Yaris(manual) and my wifes Scion Xb, really think it will help out her Xb more than my Yaris. Hers is an auto, and from what I see it going to help out her car quite a bit.

Couple questions though..will the groundkit affect my warranty? does it help to attach the wire to more places than suggested in the DIY posted in this forum?

[ItsMyDaily]

I am going to put in a grounding Kit into both my Yaris(manual) and my wifes Scion Xb, really think it will help out her Xb more than my Yaris. Hers is an auto, and from what I see it going to help out her car quite a bit.

Couple questions though..will the groundkit affect my warranty? does it help to attach the wire to more places than suggested in the DIY posted in this forum?

If a dealer tells you they won't service under warrenty because you have the grounding kit then make sure you kick the guy in the nutz!!!! No way it will void warrenty. I looked and saw that they didn't get to extensive with this car as far as making it well grounded. I think ththe yaris will benefit from it grealty. You can add as many wires as you feel you need. The more the better actually, but after some point more may be to much.

the points I'd focus on getting grounded would be.....
1. engine head
2. intake manifold(I'd point to throttle body)
3. tranny
5. alternator
6. engine block
that's what most kits will tell you to mount to, i'd also include...
7. starter
8. head lamps

[jeff_o]

so that's how it should work... it's just like making multiple wire connections from different areas of engine bay to battery's negative. sort of like stabling static signals in the engine bay... did i say it right?

also positive to alternator? are car alternator's powered by 12V?

i wonder why doesn't the toyota release cars with grounding kits OEM? If it is just as simple as doubling grounded wires why the heck don't they do it>?

[vodkalush]

to save $$

[ItsMyDaily]

to save $$

that and because they also want to be able to sell teir trd ground kits :wink:

[Violin]

I wish Import Tuner had put that article online. Maybe I can scan it and post it and claim liberal use of the Fair Use Doctrine.

[ttufrosty]

Sorry to sort of hijack this topic, but when making the points do you wire them from point to point or wire all back to the negaitve terminal.

[ItsMyDaily]

Sorry to sort of hijack this topic, but when making the points do you wire them from point to point or wire all back to the negaitve terminal.

I've seen it done two ways.
1. You wire everything back to the negative terminal.
2. You wire one after the other (sort of like one long ground wire that connects to different components as it goes along.)hmmm so what i mean is if you were to connect one from the battery to the head then you would connect the second wire from the head(same point you connect the first) and go on to your next location. and so on, and so on.

hope that makes sense?:confused:

Best way is to wire to negative terminal of battery.

[Violin]

I don't know how much use this is but...

http://img.photobucket.com/albums/1103/rjenkie/File0001Large-1.jpg

http://img.photobucket.com/albums/1103/rjenkie/File0002Large-1.jpg

http://img.photobucket.com/albums/1103/rjenkie/File0003Large-1.jpg

http://img.photobucket.com/albums/1103/rjenkie/File0004Medium.jpg

http://img.photobucket.com/albums/1103/rjenkie/File0005Medium.jpg

[ItsMyDaily]

nice find. interesting article.

[hasher22]

hey guys, during the next week or so, ill be buying a grounding kit of ebay.

Though, this one has 6 wires excluding the wire that connects to the negative part of the bat. Just Wondering do i need 8 wires when i think about it, i think i need about 4 or 5?....

[ItsMyDaily]

hey guys, during the next week or so, ill be buying a grounding kit of ebay.

Though, this one has 6 wires excluding the wire that connects to the negative part of the bat. Just Wondering do i need 8 wires when i think about it, i think i need about 4 or 5?....

depends on how many points you feel you want to ground. I think 8 is enough. :smile: You can't go wrong with even having to many grounds.

[Kitt]

So this ground kit can be DIY? i just need to buy the wires and know where to plug them?

[vodkalush]

its must def a DIY and depending on what gage wire you get and how many points can range from $20-$80 (I got 6 gage wire, corrosive resistant ends, heat shrink, crimpers for $42)

[Kitt]

Oh i see and how do u connect them to the ignition coils? im planning to do that to mine, it's the same engine anyways... do u have some pics about it?

PS you can also connect a cable direct from the battery to a relay switch that can be activated by the car stereo remote cable or any other remote signal cable, the idea of the remote is to avoid overcharging the stereo remote plug...

[Idjiit]

Learn how to launch properly and hit your shift points correctly.

[jeff_o]

i don't think you have to connect it to the ignition coil... just the negative terminal will do... correct me if i'm wrong though.

also, is there a hard rule which components/parts of the engine bay that you should ground? or just ground whatever you feel grounding?

[ItsMyDaily]

^ no you can ground whatever you feel you want to. it's only suggested that you ground certain points(engine head, intake mani, tranny, eyc.) for best benefits. Other then the suggested areas it really doesn't matter what you ground.

[Katana]

Correct!

There are 3-4 important points that you have to connect.

[Yarisindo]

If weight is really a big factor and every kg counts then I think the driver has to go on a diet, and pump gas only when needed, so no full tanks and empty your bladder whenever possibe before driving :) Take it easy...

[ItsMyDaily]

Just ordered my ground wires off of ebay. I'll do a DIY once they arrive for those interested.

[Kitt]

thanks buddy! we'll be waiting for that...

[bulldogs2k]

shorter gear ratio helps with acceleration too!

[ItsMyDaily]

^ wow forgot about gears. true that, but I think the aris already has pretty short gearing. wouldn't want to go shorter myself.
Still waiting on my wires, should come in tomorrow hopefully.

[YamilR]

will this set works?

http://cgi.ebay.com/ebaymotors/HKS-GROUND-WIRE-KIT-TOYOTA-XA-XB-TC-YARIS-TACOMA-TERCEL_W0QQitemZ120042845233QQihZ002QQcategoryZ335 74QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

[ItsMyDaily]

will this set works?

http://cgi.ebay.com/ebaymotors/HKS-GROUND-WIRE-KIT-TOYOTA-XA-XB-TC-YARIS-TACOMA-TERCEL_W0QQitemZ120042845233QQihZ002QQcategoryZ335 74QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

they are all the same thing. the only thing that makes them vary in price is the name. That actually looks pretty kool. It's a fake hks ofcourse, but still doesn't look bad. good find.:thumbsup:

[BMGYaris]

hey, if anyone is still reading this, i am just learning about grounding kits and all of that (of course i will make it myself when i decide to do it) but since the power steering is electric also do we need to do any special grounding for it?

[ItsMyDaily]

my ground wires came in yesterday. hopefully I can instal tomorrow, but if I have no time then sunday for sure.

[ItsMyDaily]

Here's the link to my groundwire dyi. Hope it's somewhat helpful to you guys.
http://www.yarisworld.com/forums/showthread.php?p=31681#post31681

[yariman]

More power? Lower gear ratio. Cheapest way smaller diameter wheel/tire combo, you will feel the difference.

[Notthy[Yaris/S]07]

no need to buy a "grounding" kit...just go to a stereo shop, and pick up some bluk large guage wire, and some connectors, and just go at it, double up any grounds you can find, ground from the battery, w/e you want, infact, throw an extra line from positive from battery to your alternator wheil your at it :)
Better buy than shines far better and professional sees itself

I don't know how much use this is but...

http://img.photobucket.com/albums/1103/rjenkie/File0001Large-1.jpg

http://img.photobucket.com/albums/1103/rjenkie/File0002Large-1.jpg

http://img.photobucket.com/albums/1103/rjenkie/File0003Large-1.jpg

http://img.photobucket.com/albums/1103/rjenkie/File0004Medium.jpg

http://img.photobucket.com/albums/1103/rjenkie/File0005Medium.jpg Good story

[Jerkratt]

that and because they also want to be able to sell teir trd ground kits :wink:

if TRD made a grounding kit....i would be able to get it free.. with the amout of ppl i know that work at the toy shop by me

[RogueYaris]

if TRD made a grounding kit....i would be able to get it free.. with the amout of ppl i know that work at the toy shop by me

Realize they said that a long long time ago when it was expected that TRD was going to come out with their own kit.

[Jerkratt]

o dam did not look at the date on the tread.... lol sorry

[cali yaris]

Top Five "acceleration mods" that I'm doing (with the brand I bought), all things I can bolt on myself:

1. cold air intake (AEM)
2. header (Megan Racing)
3. crank pulley (NST)
4. catback exhaust (probably custom 'cause I don't want a can, but I do like the Greddy product)
5. grounding wires (stereo store as noted)
6. lighter-than-stock wheels (SportMax for me, but whatever you like)
7. tach (knowing were redline's at IS kind of important for max acceleration)

oops, that was seven.

[RogueYaris]

Top Five "acceleration mods" that I'm doing (with the brand I bought), all things I can bolt on myself:

1. cold air intake (AEM)
2. header (Megan Racing)
3. crank pulley (NST)
4. catback exhaust (probably custom 'cause I don't want a can, but I do like the Greddy product)
5. grounding wires (stereo store as noted)
6. lighter-than-stock wheels (SportMax for me, but whatever you like)
7. tach (knowing were redline's at IS kind of important for max acceleration)

oops, that was seven.

I don't use tachs when accelerating, I just go by feel. Our yaris is an automatic so it's a moot point there but our mustang is manual with a tach and i don't bother looking at it half the time.

[Edd]

i wonder why doesn't the toyota release cars with grounding kits OEM? If it is just as simple as doubling grounded wires why the heck don't they do it>?

Well it wouldn't be a "kit" then would it? :redface: It's a modern car, the wires grounding it are already large enough to carry the current with minimal resistance. The reason they don't do it because there's no point. I'm sure they'd love to add 5HP to the specs sheet for basically no cost, but it doesn't work. It's the same reason they have an ECU in the car and not a 5c resistor to "Add up to 30HP". :frown:
EDIT: I should mention that if you have more stuff hooked up, so you are drawing more current from the battery, then yes, you will need to run more wires through. It can also reduce static in your audio system at higher volumes. The point is, it won't "get better acceleration ?"...

[fuji]

Don't forget the rims. A really light pair of rims in a 15x7 Enkei RPF1 will dramatically improve acceleration, braking, suspension performance and cornering.

Any thing rotational such as a flywheel or pulleys would also be useful.

[Kiyoshi Manabe]

I have a previous generation Yaris 1.3 with CVT automatic transmission,with its designation "Toyota Vitz 1.3U-L" in Japanese market.
Its milage is 64400km(about 40000miles), and it can post 0-100km/h(0-62mph) in 11.3sec, and 100-140km/h acceleration time is 11.64sec, which are faster than VW New Beetle and Ford Focus 2.0 with automatic transmission.
I think it is more than enough for 1.3 liter light car.
And its maximum speed is 175km/h(GPS verified) and there is more room for its accelerator then,its true maximum speed is between 195-200km/h bracket, if its speed limiter is removed. In fact, on chassis dynamo, my Yaris 1.3 recorded 190.68km/h@6000rpm, with limiter kick in. So,its maximum speed can be close to 200km/h without limiter!(It is far higher than that of Chrysler PT Cruiser 2.4L and Dodge Caliber 2.0L.)
The reason why my Yaris(Vitz) 1.3 with automatic transmission can do such more than average time for a 1.3 liter subcompact is for 0W-50 oil, carbon-removing chemical included in fuel tank, and its iridium plugs.
PS:The results for my Yaris 1.3 yielded at power check with Bosch chassis dyno are 100.9ps(manifacturer data is 87ps) and maximum torque 15.8kgm(manifucturer data 11.8kgm=116Nm), far higher than maker data!

[dallas]

The grounding wires are a joke, on a car with good factory grounds you most likely won't see any gain, now a old rusty Honda, ha 5 horsepower!
A lighter flywheel will make car accelrate a bit faster but if you change gears, the car will actually be slower in straight line acceration. You will loose the momentum of a heavier flywheel between shifts, I've done lighter flywheels in 2 cars now and both ended up slower at the drag race strip, at 1/10 of a second, my g-tech also confirmed this. If you want to autocross or are on a race track you will benefit by the lighter flywheel, coming out of corners it will rev to the top of each gear faster and rpms drop faster for matching rev's to gears.

For faster accelation. I would go with underdrive pulley, cold air intake, bigger throttle body and mild exhaust.

[Liu997]

How does grounding wires help the car gain hp?

[lammy29]

The grounding wires are a joke, on a car with good factory grounds you most likely won't see any gain, now a old rusty Honda, ha 5 horsepower!
A lighter flywheel will make car accelrate a bit faster but if you change gears, the car will actually be slower in straight line acceration. You will loose the momentum of a heavier flywheel between shifts, I've done lighter flywheels in 2 cars now and both ended up slower at the drag race strip, at 1/10 of a second, my g-tech also confirmed this. If you want to autocross or are on a race track you will benefit by the lighter flywheel, coming out of corners it will rev to the top of each gear faster and rpms drop faster for matching rev's to gears.

For faster accelation. I would go with underdrive pulley, cold air intake, bigger throttle body and mild exhaust.

i heard summit like tht about the flywheel, also will it effect it wen driving uphill (having lighter flywheel)?

would you say in that particular order? pulley, cai, throttle body then exhuast.

[severous01]

How does grounding wires help the car gain hp?

eliminates static friction
allows quicker transfer of electricity and smoother transfer of info for ecm to operate efficiently
removes stray ions so the terminals dont corrode. (keep bat top clean and they wont turn into a chia pet)


honestly some ppl go way too far. all you need is a ground from the block to the firewall (some say on the ecm itself but i'd go directly to wall), from block to battery, and from battery to firewall or fender....just a triangle.

also, a lot of ppl are getting this huge 0g wire, not necessary. you can get a ground strap from autozon for about 99c. you can also use that same strap on the bat. it doesnt look good, but you can wrap it and hide it with colored elec tape or whatever

[cali yaris]

Why don't you see grounding wires on racecars?

[PHXDEMON]

Damn this thread is old :laugh: Grounding kits are a joke.

[gwasabi]

get the corolla TB. Helped tons with the acceleration. By far the only mod I got on my car that actually made a different.

[Yoda]

which one was it again gonna order it today cant wait any longer. need the year and the part number for the tb