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]

Originally Posted by 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.

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]

Originally Posted by Liu997

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 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