best performance mod for your $$$

[brycedudley]

i don't know alot about car's and will probably have to have whatever performance mod's done by a shop... but i am just wondering what i should get that is going to get me the most power/speed gain for my $$$. any suggestions?

[Kaotic Lazagna]

That would probably be nitrous. However, you can do major damage if you don't know how to use it properly.

[thebarber]

coilovers...

[ddongbap]

X2

[JumpmanYaris]

I would have to say a MI sticker :bellyroll:

[Loren]

Coilovers aren't going to improve speed or power, they're going to improve handling. (which is great, but not what the poster asked)

Best bang/buck speed improvement = removing weight.

[lilredrocket]

My car seemed a lot quicker when my rear set was out and that mod was free but if you want to buy something get an Underdrive Pulley from NST (www.nonstoptuning.com) you can also get them from Garm at MI (www.microimageonline.com)

[MiniTRD]

start with a lightened NST crank pulley. you'll rev up faster which means you'll go a little quicker

[AlainMikli]

I would say the Fuel Map Controller, however I don't have any dyno result, so my 2nd priority is the Throttler Controller:smile:

[AlainMikli]

My car seemed a lot quicker when my rear set was out and that mod was free but if you want to buy something get an Underdrive Pulley from NST (www.nonstoptuning.com) you can also get them from Garm at MI (www.microimageonline.com)

You'll be faster if you remove the rear seats for sure..but only for those who don't need to carry more than 1 passenger.

[tomato]

subscribed

[Kaotic Lazagna]

You can also start the weight reductions else where. If you don't mind the excessive noise, you can remove the carpeting and the sound insulation, and also remove the spare tire and tools and instead, carry a AAA membership card.

The lightened pulleys will also help you decelerate quicker too.

[YarisSedan]

Best bang for your buck is to go on a diet reducing the total weight of your car when you are sitting in it thus making it handle better and go faster

[thebarber]

I would have to say a MI sticker :bellyroll:
not sure someone in OH would want a sticker of MI, lol ;)

Coilovers aren't going to improve speed or power, they're going to improve handling. (which is great, but not what the poster asked)

Best bang/buck speed improvement = removing weight.
ya, i know what he meant. id say intake, really. can get a cheapy off of ebay and slap a k&n filter on it.....a few more horses, a nice noise. its win win

subscribed

you know you can just choose to subscribe to the thread at the top of any page, under thread tools, right?

[jouna]

make ur own intake with pvc pipes remove the vacum hose put a 10k potenciometer in the temp. sensor and voila. ur a lil bit faster

[PHXDEMON]

AFE intake.

[severous01]

guys on camaro forums and mustang forums are removing excess threads from bolts throughout the car. every bolt that is longer than it needs to be just cut it off with a grinder or sawzall.

most removed an average weight of around 45lbs...not including the dust that came off from saws or cutters.

another option is carbon fiber...it's cheap if you know what you're doing. otherwise, pay someone else to do it. hatch, hood, door skins...anything not safety or stucture related can be easily made of CF. hoods/hatches need to have break-away sections.

lexan is another option if you dont mind scratches...i guess you could put some clear 3m sheets on it to prevent scratches like the racers do. rear windows and hatch are legal, not the fronts or windshield are illegal in all 50 states tho.

every 100hp is about .1 seconds in the 1/4

[supmet]

lol... lets spend 40 hours pulling insulation and extra threads off of bolts to save 2 pounds. THEN lets spend a buttload of money getting lexan and cf and save a total of 50 lbs(if that - on my sedan the hood and trunk lid weigh almost nothing, the windows are just as light). I would do an A/C delete before lexan windows.

Remove your rear seats and spare tire, and call it a day. If you were at the point where anything else would help, you wouldn't be here asking questions.

every 100hp is about .1 seconds in the 1/4

So if I add 1000 hp I'll finally pull a 17? sweet!

I think you meant pounds, and then your formula only holds true for a very narrow range... I think a 1300 lb yaris with 100 hp will do slightly faster than mid 16s

[cali yaris]

what i should get that is going to get me the most power/speed gain for my $$$

built turbo motor.

Seriously though, without some idea of budget, how can we answer the question.

[tomato]

you know you can just choose to subscribe to the thread at the top of any page, under thread tools, right?

yeah, thanks. that was another way to say bump and let the OP know others are interested in his Q :smile:

[Yoda]

pulley and TB about 6 total whp.

[brycedudley]

lol no one else seemed to have a problem answering the question :-D

what are some ways to remove excess weight without taking the back seat out? i def. don't wanna do that just because i have more than one passenger alot...

and how much would the intake run me total? is it worth the money for what your going to get out of it? and is there an impact on mpg?

[cali yaris]

lol no one else seemed to have a problem answering the question :-D

Hey I'm just trying to be helpful -- no need for sarcasm. If you're on a budget, just say so and suggestions will be relevant.

AFE intake is $174 shipped. I think it's worth the money, it adds a little power and sounds great. Same or better mileage, and you get a reusable, cleanable filter.

The AFE drop-in filter is about 50 bucks and opens up the airflow a little, but not as much as an intake system.

[Kaotic Lazagna]

lol no one else seemed to have a problem answering the question :-D

what are some ways to remove excess weight without taking the back seat out? i def. don't wanna do that just because i have more than one passenger alot...



Remove the sound system...all the wiring, the HU, and all of the speakers. For LB's, remove the rear window wiper and all of the things associated with it, wiring, motor, fluid reservoir, etc.

[YotaYaris]

best performance mod for your $$$ , will always be turbo as said already
if you do not have $$$, and only have $ ...... then pulleys, intake, weight loss

[severous01]

NOS is always the best bang for the buck...500 hp for about a grand...but then again you gotta have the engine that can handle it.

any way, 50% for 500 bux aint bad. but it has upkeep. you gotta refill, you gotta reprogram, and you gotta run all kinds of wires and switches.


lotta ppl start with suspension. lots start with intake and exhaust. some start with weight redux or lighting or wheels/tires or whatever. lemme tell ya what, whatever you do, you better have supporting mods for whatever it is you're doin. if you're turbo'in ur car, you better have brakes, suspension, and programming, possibly forged internals.

personally, i'd start at the bottom...literally, and work up. wheels/tires, brakes, shocks/springs, exhaust, intake, then engine.

[posaunemeister]

The AFE drop-in filter is about 50 bucks and opens up the airflow a little, but not as much as an intake system.

Heck, I'll sell you my Bomz aluminum cold air intake with filter for $60 (shipped). Look at my classifieds. I have pics and everything. It's just as good as the AFE when you consider the value. Basically, both are long tubes with a filter on the end and a MAF adapter, except mine is $114 less AND includes shipping.

[cali yaris]

post 26, I think you meant "50 hp", not 500? that would be a pretty serious shot of NOS.

[curik]

Guys, speaking about cheap mods, what do you think of installing this DaviesCraig EWP (Electric Water Pump) kit on the yaris? This kit can handle up to a 3.0L engine and can be digitally controlled (optional, sold separately), or otherwise run with the stock thermostat. Price wise I found some on ebay around the AU$180 mark (about 150US??). There is an instruction sheet provided and it looks quite DIYable..

Some of the benefits running EWP are:
- increased fuel economy (one less sob sapping the engine power)
- more power to the wheels (they claim 10kw (~13hp) on a V8 Holden)
- desired coolant temp can be preset (with the optional digital controller)
- can be set to run even after the engine is off (on track days)

https://www.daviescraig.com.au/Images/EWP80%20INSTRUCTIONS%2007-12-2007.pdf

[supmet]

Remove the sound system...all the wiring, the HU, and all of the speakers.

I'm too lazy to pick up my stock head unit again and feel what it weighs, but I'm guessing with everything you're not even saving 10 lbs. If you're willing to sacrifice tunes for 1/100th of a second on the 1/4 you bought the wrong car. Get a nice system, and have a quick release for the amp and sub(the only heavy things involved in most systems).

[ozmdd]

lol no one else seemed to have a problem answering the question :-D

what are some ways to remove excess weight without taking the back seat out? i def. don't wanna do that just because i have more than one passenger alot...

1)Remove your spare tire and replace with fix-a-flat.
2)Swap your battery for an ultralight battery (Odyssey, Braille)
3)Change to the lightest tire/wheel combo you can find/afford (rotating mass).
4)Never fill tank more than half-way. (except on road trips)

[ozmdd]

Guys, speaking about cheap mods, what do you think of installing this DaviesCraig EWP (Electric Water Pump) kit on the yaris? This kit can handle up to a 3.0L engine and can be digitally controlled (optional, sold separately), or otherwise run with the stock thermostat. Price wise I found some on ebay around the AU$180 mark (about 150US??). There is an instruction sheet provided and it looks quite DIYable..

Some of the benefits running EWP are:
- increased fuel economy (one less sob sapping the engine power)
- more power to the wheels (they claim 10kw (~13hp) on a V8 Holden)
- desired coolant temp can be preset (with the optional digital controller)
- can be set to run even after the engine is off (on track days)

https://www.daviescraig.com.au/Images/EWP80%20INSTRUCTIONS%2007-12-2007.pdf

This is VERY interesting to me. Tamago, got any thoughts?

[ozmdd]

BTW - to answer the original question, i think the 3-best performance mods, based on bang-for-buck and within the range of the average budget are: lightened/underdrive pulley, axle-back exhaust and air intake swap, in that order.

[PETERPOOP]

underdrive pulley/ 1zz throttle body/ NOS

[Tamago]

better tires, an aggressive alignment, and rear swaybar. skip the power mods, unless you're doing forced induction or nitrous, it's a waste of money /hp

[ozmdd]

Ooh, yes, I forgot the sway bar (rear). Such a good investment.

[LittleRed]

i don't know alot about car's and will probably have to have whatever performance mod's done by a shop... but i am just wondering what i should get that is going to get me the most power/speed gain for my $$$. any suggestions?

The best thing ive ever bought for the yaris is a AFE cold air intake..it made an amazing difference in mine as well as using 91 octane gas and putting fuel system cleaners in it on a regular basis..it does give it a slight growl..but a satisfying one...you can do it yourself..its very simple..and cost about 150.00..totally worth it.... alot of bang for your buck

[Astroman]

Weight reduction is the cheapest. It also depends on your budget. Check out the classifieds, I purchased a used AEM intake and lowering springs, saving about $400 (the price of the springs alone if I had bought them new.) Forced induction/nitrous would be the way to go if you have the money. I went with intake, header, exhaust, pulleys and it shaved just under 2sec off my quarter mile time WITH removing the seats, spare & tools.

[magilla]

how much does 07 stock hatchy weight?

[hatchbackkid82]

like 2300 lbs

[ilikerice]

.it made an amazing difference in mine as well as using 91 octane gas

correct me if im wrong, but i dont think it really matters with stock 1nz engine if you put 87 or 91 octane in your tank. a stock 1nz has low compression anyways and has no real gain in power other than burns cleaner. i know as a crx owner for a decade that the stock 1.6L sohc wont produce any hp from 91 octate to 87. i personally think its more frame of mind that u put something that someone else uses thats tuned for it so u think the cars is quicker, but its really not..
i know this goes true with crx, but i could be wrong with the yaris, if im wrong i will convert to 91 octate today

[ROCKLAND TOYOTA]

correct me if im wrong, but i dont think it really matters with stock 1nz engine if you put 87 or 91 octane in your tank. a stock 1nz has low compression anyways and has no real gain in power other than burns cleaner. i know as a crx owner for a decade that the stock 1.6L sohc wont produce any hp from 91 octate to 87. i personally think its more frame of mind that u put something that someone else uses thats tuned for it so u think the cars is quicker, but its really not..
i know this goes true with crx, but i could be wrong with the yaris, if im wrong i will convert to 91 octate today

the NAYSAYERS will be all over this one as this has been touch upon one too many times.

DO A SEARCH on this topic and see what comes up..........

[cali yaris]

a stock 1nz has low compression anyways

one correction. 10.5:1 is fairly high compression, not low. I'm guessing CRX compression is even higher?

[SimTronik]

Hey, was reading the thread since beginning, not sure what a underdrive pulley does. Looking for something that will lower RPM at constant speed...

[tk-421]

Hey, was reading the thread since beginning, not sure what a underdrive pulley does. Looking for something that will lower RPM at constant speed...

An underdrive pulley does exactly the opposite. The engine revs are a lot more now that I have it on.
You may want to look into throttle controllers instead, since you can basically control the throttle response any way you want, and thus have better control of RPMs at constant speeds. :thumbsup:

[SimTronik]

Thanks mister.

[jcemitte]

This OP clearly did not read the performance primer... lol

[mario98c]

The best performance mod for $$$ is nitrous! /thread

[cali yaris]

re: #44 and #45:

rpm vs speed is a function of the transmission ratio and tire diameter.

It has nothing to do with the crank pulley, or a throttle controller, or anything else.

[ilikerice]

one correction. 10.5:1 is fairly high compression, not low. I'm guessing CRX compression is even higher

crx on a stock si is 9.5:1.. i guess i was corrected that 6 octane makes a difference on a non tuned stock yaris. i assumed toyota would make a eco car to run on any gas equally. i gots lots to learn on this new found toy i gots. learning new stuff everyday.

[MadMax]

My car seemed a lot quicker when my rear set was out...

Did you leave your rear site out? If so, is it a 60/40 split seat or the standard bench? Finally, if it is, and you would like to sell it, let me know...

Cheers! M2

[SimTronik]

re: #44 and #45:

rpm vs speed is a function of the transmission ratio and tire diameter.

It has nothing to do with the crank pulley, or a throttle controller, or anything else.

Do you mean that with larger tire dia. i could lower my rpm at constant speed or it really has to do with the transmission too?

I reveived my fog bulbs and harnesses today btw :w00t:

[bobolinko]

1)Remove your spare tire and replace with fix-a-flat.


You'll DESTROY The TPMS SENSORS ad Replacement cost is not cheap !!!

:thumbdown:

[Hard_Yaris]

You'll DESTROY The TPMS SENSORS ad Replacement cost is not cheap !!!

:thumbdown:

Please explain this. TPMS SENSORS --what they are. what they do. why they are important?

[JumpmanYaris]

You'll DESTROY The TPMS SENSORS
:thumbdown:

Not if u have a 07 model

[chrisj]

You'll DESTROY The TPMS SENSORS ad Replacement cost is not cheap !!!

:thumbdown:

Holy shit! I always carry FAF because I'm a lazy bastard. Glad I read this. Now I'll just have to call AAA.:wink:

[xen555]

sorry but for the best performance buy another car!!! dont get me worng i love my yaris