N/A performance tune - Toyota Yaris Forums

yaris2010RS · 12-11-2012, 10:00 AM

Hey all, so as most of you know i have recently switched from boosted to Stock. i cant wait to get boosted again but in the mean time i do plan to do some "wallet friendly" mods to this engine (its painfully slow). its 99% stock. Stock intake (carbon trap removed) stock header, stock midpipe, aftermarket axel back, 5w-20 oil and 87 octane fuel (im not gonna miss 91 and untra 94), i did reinstall my AEM Wideband AFR sensor into my stock midpipe to see what the stock ECM is doing.

I do plan to do this correct by doing a dyno run prior to anything and as long as i find a reasonable rate for 3 pulls i plan to dyno after each small mod.

Basically NA tuning is new to me (We actually tuning in general is, hence the fact im back to stock), i know our EMC has a fuel econo tune on it, and i love % changes. before we get into the nit-grits of my method of madness what kind of tune would benifit a NA engine. I have considered ways to set off the ECM to change output % but would % more fuel benefit to more Power?

Stock ECM tune AFR (for all you wondering) is 14.6-15.6 for all conditions untill open loop conditions are met. where it drops down to a very steady 12.4.

basically to make more power on a NA engine on a very small budget would i be looking to gain a bit more fuel or would this be useless and i should focus my efforts on timing?

JustDidIt · 12-11-2012, 07:42 PM

Hope I'm not hijacking ur thread...

What are you planning to use for tuning and EMS? I'm looking for something that will advance timing for an NA build - as far as I know the:

AEM FIC will only retard timing...
Camcon...gone...
haltech platinum - couldn't find any info about Timing advance.
Allan Phillips Racing In-Line ECU - couldn't find any info about Timing advance.
Greddy Emanage Ultimate - couldn't find any info about Timing advance.
I've read of APR's ECU...but at $1800 your practically at AEM stand alone.

Focus_Sh1ft · 12-13-2012, 01:27 AM

.89 lambda is considered the sweet spot for NA, but I can't imagine you're going to see an appreciable improvement. Worth trying though.

As for timing, you could advance the chain (I think you suggested that on MI?) and use it in tangent with the FIC. That would be interesting...

(in other words do it)

mario98c · 12-13-2012, 02:33 AM

13.5 in all the powerband in open loop.

12-11-2012, 10:00 AM	#1
yaris2010RS View User's Garage Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009 Location: Angus, Ontario Posts: 1,891	N/A performance tune Hey all, so as most of you know i have recently switched from boosted to Stock. i cant wait to get boosted again but in the mean time i do plan to do some "wallet friendly" mods to this engine (its painfully slow). its 99% stock. Stock intake (carbon trap removed) stock header, stock midpipe, aftermarket axel back, 5w-20 oil and 87 octane fuel (im not gonna miss 91 and untra 94), i did reinstall my AEM Wideband AFR sensor into my stock midpipe to see what the stock ECM is doing. I do plan to do this correct by doing a dyno run prior to anything and as long as i find a reasonable rate for 3 pulls i plan to dyno after each small mod. Basically NA tuning is new to me (We actually tuning in general is, hence the fact im back to stock), i know our EMC has a fuel econo tune on it, and i love % changes. before we get into the nit-grits of my method of madness what kind of tune would benifit a NA engine. I have considered ways to set off the ECM to change output % but would % more fuel benefit to more Power? Stock ECM tune AFR (for all you wondering) is 14.6-15.6 for all conditions untill open loop conditions are met. where it drops down to a very steady 12.4. basically to make more power on a NA engine on a very small budget would i be looking to gain a bit more fuel or would this be useless and i should focus my efforts on timing? __________________ If it has boobs or wheels sooner or later your gonna have problems with it

12-13-2012, 02:33 AM	#4
mario98c Drives: Toyota Yaris Sedan 09 STD Join Date: May 2009 Location: Puerto Rico Posts: 1,227	13.5 in all the powerband in open loop. __________________

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
The Yaris Performance Primer	eTiMaGo	Performance Modifications	31	10-20-2025 10:08 AM
Performance?	chrisj	Off-topic / Other Cars / Everything else Discussions	9	10-16-2010 06:14 AM
December at TWM Performance!	TWM Performance	TWM Performance	17	01-08-2010 10:14 AM
>>>>>> Boxing Day Sale at TWM Performance; Short Shifters and Shift Knobs <<<<<<	TWM Performance	TWM Performance	0	12-24-2009 11:21 AM
Black Friday SALE from TWM Performance!	TWM Performance	TWM Performance	1	11-27-2009 12:46 PM

12-11-2012, 07:42 PM	#2
JustDidIt Drives: '08G2T Prius Join Date: Oct 2012 Location: United States Posts: 163	Hope I'm not hijacking ur thread... What are you planning to use for tuning and EMS? I'm looking for something that will advance timing for an NA build - as far as I know the: AEM FIC will only retard timing... Camcon...gone... haltech platinum - couldn't find any info about Timing advance. Allan Phillips Racing In-Line ECU - couldn't find any info about Timing advance. Greddy Emanage Ultimate - couldn't find any info about Timing advance. I've read of APR's ECU...but at $1800 your practically at AEM stand alone.

12-13-2012, 01:27 AM	#3
Focus_Sh1ft Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010 Location: New Jersey Posts: 875	.89 lambda is considered the sweet spot for NA, but I can't imagine you're going to see an appreciable improvement. Worth trying though. As for timing, you could advance the chain (I think you suggested that on MI?) and use it in tangent with the FIC. That would be interesting... (in other words do it)