Increasing Horsepower: What Should I Add To My Yaris?

[jessicammhm]

I have an 07 Yaris 5speed and was wondering what I could add to it to increase the HP. I've heard iridium spark plugs and better intakes and stuff but has anyone made any mods on theirs to increase HP? If you know of anything that has helped you let me know. Thanks!

[PETERPOOP]

1zz throttle body if you can make it work

NST underdrive crank pulley.

intake

header

exhaust

[cdydjded]

I concur with the above statement.....

[cali yaris]

+1

And whether or not I get flamed for saying it -- use the search feature first, there is a wealth of knowledge already on here that will answer your question completely, starting with the "Performance Primer".

[hatchbackkid82]

Mid pipe, + the full pulley kit, light weight flywheel. :burnrubber:

1zz throttle body if you can make it work

NST underdrive crank pulley.

intake

header

exhaust

[Astroman]

Weight reduction helps too.

[Cosmonaut]

i think the spark plugs should be addressed. arent the iridium plugs marketing trash? or is it different for this car?

[cali yaris]

I never had a problem with the stock spark plugs, street and track. Someone would have to dyno test one brand/type against another to prove to me that there's a difference in power output.

[thebarber]

intake, dc header, an exhaust thats more than just an axleback (ie from the resonator back)

with just an intake and res-back exhaust i pulled 106whp/107wtq on a dyno

nst lightweight or underdrive crank pullies are nice too

[CarBob08]

Here are the things that made my car "feel" a whole lot better.
1. NST pulleys (very nice throttle response difference)
2. DCSport header (helped smooth out the power across the band and much nicer at the high end)
3. Modified air-box (most people do cold air intakes, I like to cut stuff, so I modded the box and used a K&N stock sized filter. This gave me +2mpg and a bit more low end power)
4. Believe it or not, setting up a second ground from the battery to the ECU seemed to really smooth things out all through the mid-high rpm range.

Have fun with your upgrades!!

[Jeemee]

Weight reduction helps too.

I agree with this 100%.

[lilredrocket]

The Yaris comes with Iridiums stock...

[ddongbap]

You are all wrong. Stickers. That is all.

[Stove]

You are all wrong. Stickers. That is all.

:thumbup: , and a huge wing.

[PETERPOOP]

spinners?

[cali yaris]

wing. check.
stickers. check.

ooh, spinners. I don't have those yet, thanks

[cdydjded]

Fuzzy dice hanging from the rear view mirror & a flux capacitor

[Astroman]

har har.
Paint stuff yellow. +10hp for yellow stickers, lol

Turbo, supercharger, nitrous, lightweight wheels/tires.

[HTM Yaris]

Don't need to add anything . Just take some driving lessons .

Seriously , which is cooler ? Showing your friends some shiny new parts or showing your friends that you have the skills to keep them out of a ditch ?

[ddongbap]

Don't need to add anything . Just take some driving lessons .

Seriously , which is cooler ? Showing your friends some shiny new parts or showing your friends that you have the skills to keep them out of a ditch ?

Depends on what you're into. Show cars are just show, but they're super duper!

[why?]

Don't need to add anything . Just take some driving lessons .

Seriously , which is cooler ? Showing your friends some shiny new parts or showing your friends that you have the skills to keep them out of a ditch ?

both! Showing friends you can keep them out of a ditch in a rare exotic car while making a couple million an hour is best though.

also not done by many.

[nazier]

just buy the yaris ts motor then u sorted, oh yes dont forget the stickers, and paint stuff red or yellow, also remove all unwanted badges, dont forget the big exhaust,

[AND189]

HTM Yaris
Don't need to add anything . Just take some driving lessons .

Seriously , which is cooler ? Showing your friends some shiny new parts or showing your friends that you have the skills to keep them out of a ditch ?

You have it in the bag.
The speed from the yaris is in the chassy i.e stiffness handling unless you want to spend big $$$

[jimek]

add a different car

[Yaris Hilton]

spinners?

http://sphotos.ak.fbcdn.net/photos-ak-snc1/v4344/179/73/693517811/n693517811_2609297_3919852.jpg

[Rain]

wing. check.
stickers. check.

ooh, spinners. I don't have those yet, thanks

How could you forget that garm? :tongue:

[cali yaris]

^ I was kinda waiting for you to buy them for me :biggrin:

[vwtech]

anyone forget the fake stick on fender vents?

[Cosmonaut]

The Yaris comes with Iridiums stock...

oops i was confused. i thought stock were the plat spark plugs.

[Tamago]

i think the spark plugs should be addressed. arent the iridium plugs marketing trash? or is it different for this car?

stock plugs are iridium :clap:

edit, got beat to it.

[NRW]

how much hp gain is there if you only do the cold air intake?