best performance mod for your $$$ - Page 3 - Toyota Yaris Forums

LittleRed · 10-01-2009, 12:15 AM

Quote:

Originally Posted by 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?

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* · 10-01-2009, 12:45 AM

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 · 10-14-2010, 11:29 AM

how much does 07 stock hatchy weight?

hatchbackkid82 · 10-14-2010, 12:26 PM

like 2300 lbs

ilikerice · 10-14-2010, 03:24 PM

Quote:

.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 · 10-14-2010, 03:34 PM

Quote:

Originally Posted by ilikerice

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 · 10-14-2010, 03:41 PM

Quote:

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 · 10-14-2010, 08:35 PM

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* · 10-14-2010, 09:49 PM

Quote:

Originally Posted by 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...

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.

SimTronik · 10-14-2010, 10:46 PM

Thanks mister.

jcemitte · 10-15-2010, 02:57 PM

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

mario98c · 10-15-2010, 05:26 PM

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

cali yaris · 10-15-2010, 06:17 PM

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 · 10-15-2010, 07:04 PM

Quote:

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 · 10-15-2010, 07:31 PM

Quote:

Originally Posted by lilredrocket

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 · 10-15-2010, 11:17 PM

Quote:

Originally Posted by 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.

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

bobolinko · 10-16-2010, 01:26 AM

Quote:

Originally Posted by ozmdd

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

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

Hard_Yaris · 10-16-2010, 11:53 AM

Quote:

Originally Posted by bobolinko

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

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

10-01-2009, 12:45 AM	#38
Astroman Modded Moderator View User's Garage Drives: 07 Toyota Yaris, 71 Galaxie Join Date: Mar 2007 Location: Wenatchee, WA Posts: 3,670	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. __________________ Please visit my online store for computer stuff and Official Yarisworld decals!

10-15-2010, 05:26 PM	#48
mario98c Drives: Toyota Yaris Sedan 09 STD Join Date: May 2009 Location: Puerto Rico Posts: 1,227	The best performance mod for $$$ is nitrous! /thread __________________

10-15-2010, 06:17 PM	#49
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	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. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

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10-14-2010, 11:29 AM	#39
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10-14-2010, 12:26 PM	#40
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10-14-2010, 08:35 PM	#44
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10-14-2010, 10:46 PM	#46
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