Stock/Built Motor - Boost and Durability - Page 2 - Toyota Yaris Forums

Focus_Sh1ft · 01-19-2011, 03:34 PM

Quote:

* I am throwing a CEL that is saying my 1st o2 sensor is running lean AND rich, that will most likely change when i go performance tune

That makes four of us that have had the AFR sensor flip out after seeing boost for awhile.

Definitely a strange problem, I suspect you guys that are tuning in closed loop may eventually have problems of the car randomly switching to open loop like I did. Would definitely recommend keeping an eye on open loop/ closed loop status.

schragen · 01-19-2011, 03:56 PM

Quote:

Originally Posted by Focus_Sh1ft

That makes four of us that have had the AFR sensor flip out after seeing boost for awhile.

Definitely a strange problem, I suspect you guys that are tuning in closed loop may eventually have problems of the car randomly switching to open loop like I did. Would definitely recommend keeping an eye on open loop/ closed loop status.

im sorry im pretty noob still, how would i accomplish keeping an eye on open/closed loops?

Focus_Sh1ft · 01-19-2011, 08:54 PM

Quote:

Originally Posted by schragen

im sorry im pretty noob still, how would i accomplish keeping an eye on open/closed loops?

You need to monitor it with an OBDII device. Scangauge is the perfect thing to have for the boosted due to all the things it can display AND read codes.

schragen · 01-19-2011, 08:58 PM

ahh well i guess that will bump up on my list of things to get ASAP

Focus_Sh1ft · 01-19-2011, 09:08 PM

Agreed, having a code reader is a must.

Being boosted isn't exactly cheap but you can't tell me it's not worth it

cali yaris · 01-19-2011, 10:12 PM

Quote:

Being boosted isn't exactly cheap but you can't tell me it's not worth it

That might have to go into my sig file

monchyxb · 05-08-2011, 08:32 PM

Engine: Stock
Induction: Greddy 14g turbo/custom ic
Boost:10psi
Whp: ~180
Management: Aem FIC
Fuel upgrades: Walbro 255lph/ Perrin Fuel Rail/ 2az injectors
Fuel: 93oct
Miles on boost: 1.5 years ~ 15K
Driving style: Very Agresive! I floor it everytime I can!
Other stuff: 2ZZ throttle body/ Custom 2.5" exhaust

Yoda · 05-08-2011, 09:22 PM

Thx for contributing

Just thought about this but shouldn't you be putting out more power than that @10psi? I mean you turbo is bigger after all and has a higher cfm. Maybe it the tune?

scioncrew · 05-09-2011, 02:42 AM

guys the biggest reason of engine fails is an improper tune. no matter how well you build your motor a bad tune will kill it in a hart bet.

Anyways here my Xb

Engine: Built (bore/sleeved/rods/pistons/springs/head work/cams)
F/I: Custom turbo kit T28
Boost: 14-20
WHP: 280
Management: AEM EMS
Fuel upgrade: 632cc injectors, Walbro pump, return line, modified Perrin rail
Fuel: Pump gas (91)
Miles on Boost: ~30+k miles
Length of time: built the motor in 2007 4yrs
Driving style: It was my daily driver untill i retired it and sold it to Garm.
MISC: rev limit 7500

monchyxb · 05-14-2011, 03:18 PM

Quote:

Originally Posted by Yoda

Thx for contributing

Just thought about this but shouldn't you be putting out more power than that @10psi? I mean you turbo is bigger after all and has a higher cfm. Maybe it the tune?

I really don't know, but the turbo is not that big.. I mean the max hp it gives is 250-260 +~. the tune has always been a problem, when I go WOT it leans and then reajusts and goes rich. maybe that affects the power. I'll take it to the dyno to see for real!

turboecho2005 · 05-16-2011, 05:42 PM

Quote:

Originally Posted by scioncrew

guys the biggest reason of engine fails is an improper tune. no matter how well you build your motor a bad tune will kill it in a hart bet.

You have it right on. I am 11.1:1 compression running 8.5psi but a rock solid tune. weeks it had spent on the dyno to make sure it can take the abuse every day with that compression. Turbo is a GT2871R

Yoda · 05-16-2011, 09:44 PM

Is that on a built engine or stock? 11.1:1 and pushing 8.5... You must have some magic elixir or something if it's still stock. What car is this btw?

turboecho2005 · 05-17-2011, 01:19 AM

Quote:

Originally Posted by Yoda

Is that on a built engine or stock? 11.1:1 and pushing 8.5... You must have some magic elixir or something if it's still stock. What car is this btw?

Its my 4AGE 20v blacktop motor. Internals are bone stock.

Yoda · 05-17-2011, 01:29 AM

standalone management?

turboecho2005 · 05-17-2011, 02:08 PM

Quote:

Originally Posted by Yoda

standalone management?

yes. megasquirt

why? · 05-18-2011, 01:25 AM

look at his sig. Twin engines? I'd love to see that thing at the drag strip.

Mister Z · 05-24-2011, 02:43 AM

Was wondering the guys who posted that there using 1zz or 2az injectors, what size? or are these stock 1zz/2az injectors or upgraded versions?

monchyxb · 05-25-2011, 01:49 AM

Quote:

Originally Posted by Mister Z

Was wondering the guys who posted that there using 1zz or 2az injectors, what size? or are these stock 1zz/2az injectors or upgraded versions?

The 2AZ injectors are stock injectors and the size is 370cc.

05-08-2011, 09:22 PM	#26
Yoda Drives: 2008 Black Sedan Join Date: Oct 2008 Location: FL Posts: 966	Thx for contributing Just thought about this but shouldn't you be putting out more power than that @10psi? I mean you turbo is bigger after all and has a higher cfm. Maybe it the tune? Last edited by Yoda; 05-08-2011 at 10:10 PM.

05-09-2011, 02:42 AM	#27
scioncrew Drives: SCION tC Join Date: Nov 2008 Location: HB Posts: 99	guys the biggest reason of engine fails is an improper tune. no matter how well you build your motor a bad tune will kill it in a hart bet. Anyways here my Xb Engine: Built (bore/sleeved/rods/pistons/springs/head work/cams) F/I: Custom turbo kit T28 Boost: 14-20 WHP: 280 Management: AEM EMS Fuel upgrade: 632cc injectors, Walbro pump, return line, modified Perrin rail Fuel: Pump gas (91) Miles on Boost: ~30+k miles Length of time: built the motor in 2007 4yrs Driving style: It was my daily driver untill i retired it and sold it to Garm. MISC: rev limit 7500 __________________ 05 Scion tC allmotor 350+ hp 9.34@144mph 05 Scion tC sfwd 880hp 9.96@147mph 05 Scion xB 280hp 12.97@104mph 07 Toyota Yaris 357hp 12.80@107mph

05-18-2011, 01:25 AM	#34
why? Only Happy When it Rains View User's Garage Drives: Yaris LB Join Date: Jan 2006 Location: harnett county NC Posts: 4,097	look at his sig. Twin engines? I'd love to see that thing at the drag strip. __________________ Colin Chapman disciple

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01-19-2011, 08:58 PM	#22
schragen Onyx Edition View User's Garage Drives: Yaris 3DR Onyx Edition Join Date: Jun 2010 Location: Colorado Posts: 27	ahh well i guess that will bump up on my list of things to get ASAP

01-19-2011, 09:08 PM	#23
Focus_Sh1ft Drives: 08 Yaris Turbo; 06 tC Turbo Join Date: Jan 2010 Location: New Jersey Posts: 875	Agreed, having a code reader is a must. Being boosted isn't exactly cheap but you can't tell me it's not worth it

05-08-2011, 08:32 PM	#25
monchyxb Drives: scion xb Join Date: Dec 2010 Location: Puerto Rico Posts: 16	Engine: Stock Induction: Greddy 14g turbo/custom ic Boost:10psi Whp: ~180 Management: Aem FIC Fuel upgrades: Walbro 255lph/ Perrin Fuel Rail/ 2az injectors Fuel: 93oct Miles on boost: 1.5 years ~ 15K Driving style: Very Agresive! I floor it everytime I can! Other stuff: 2ZZ throttle body/ Custom 2.5" exhaust

05-16-2011, 09:44 PM	#30
Yoda Drives: 2008 Black Sedan Join Date: Oct 2008 Location: FL Posts: 966	Is that on a built engine or stock? 11.1:1 and pushing 8.5... You must have some magic elixir or something if it's still stock. What car is this btw?

05-17-2011, 01:29 AM	#32
Yoda Drives: 2008 Black Sedan Join Date: Oct 2008 Location: FL Posts: 966	standalone management?

05-24-2011, 02:43 AM	#35
Mister Z Drives: 08 Yaris HB Join Date: Nov 2009 Location: Rancho Cucamonga, CA Posts: 282	Was wondering the guys who posted that there using 1zz or 2az injectors, what size? or are these stock 1zz/2az injectors or upgraded versions?