trd turbo tunning plan - Page 2 - Toyota Yaris Forums

fett22 · 06-08-2010, 10:05 AM

need these

fett22 · 06-08-2010, 11:24 AM

Still having the air leak after replacing the o ring, defenety the BOV is ruined,but sounds so good

. I am concerned about air/ fuel misture with these leak , is not some much air what i am lossing, but maybe after some miles i will have again the CEL, TRC AND VSC ligths have to wait to see whats up with that.

fett22 · 06-08-2010, 06:17 PM

lights are on again.

CTScott · 06-08-2010, 09:24 PM

Do you have a scantool to read the DTC that causing the CEL to light?

Did you swap your ECM for the one you received with the turbo? If so, did it come off of a Vitz that had TRAC and VSC?

fett22 · 06-08-2010, 09:32 PM

Quote:

Originally Posted by CTScott

Do you have a scantool to read the DTC that causing the CEL to light?

Did you swap your ECM for the one you received with the turbo? If so, did it come off of a Vitz that had TRAC and VSC?

tomorrow i am gonna scan the car, i used the car almost about 2 weeks with the turbo computer on no cel, try track control and worked fine, as soon as i installed the BOV, have the cel, and vsc trc ligths on,so not sure whats the issue.
will post info about the scantool.

Nexus1155 · 06-08-2010, 10:02 PM

Did you pressure test it or just slap everything together? If not, build a pressure tester, hook up some air w/ a regulator! and see how it goes, you probably have more leaks than you think.

In reality, we all like to believe its easy to slap something together and just have it work, but theres always going to be small hickups.

Yaris0609 · 06-08-2010, 11:23 PM

can you tell us where you have the vac line for the blow off valve hooked up? looks to me like thats the problem, I just cant tell where the line t's to. I see it going from the throttle body to the "t", then from there i can't tell. You should be pulling vac for the BOV after the throttle plate, like from a nipple in the intake manifold.

Nexus1155 · 06-09-2010, 12:28 AM

Now looking at what he said that looks very awkwardly setup.

I can somewhat see it going T'd from throttle body nipple, to the bov, then T'd back into a checkvalve into the MAF sensor/airbox?

Yaris0609 · 06-09-2010, 01:01 AM

in the parts diagram, there is no picture of a BPV. Maybe Toyota wanted it that way, small motor, small turbo, no reason for an anti lag valve(BPV), that turbo probably makes max boost at no rpm. If you want to run that BOV, you might need to plumb it differently....

Bluevitz-rs · 06-09-2010, 10:28 AM

Looks like it's routed TB-"T"-BOV/EVAP purge valve.

You might want to add a One Way vacuum valve just before the EVAP valve. You might be leaking boost through it.

Nexus1155 · 06-09-2010, 11:07 AM

Recirculate it..... BOV is cool for noisez i won't lie

fett22 · 06-09-2010, 02:24 PM

i take the vacum line from the same as the picture, i have a frend with exactly same car as mine and he use the vac line from same place that i take it,and that worked great for him, definitely theres and air leak couse of valve spring isnt closing completely , so after i change the valve were gonna see if thats the problem, thanks for all the info.

rob323 · 06-09-2010, 06:11 PM

Running a bov that vents to the atmosphere is not recommended on cars with an air flow meter (such as your car) as it will run real rich on gear changes. If the outlet from the bov was plumbed back in to the piping after the air flow meter but before the turbo, you will get correct air flow readings, correct fuel mixtures and no cel's.
Because the bov is open at idle, it is drawing in un-metered and unfiltered air and that is what is causing the cel's.

fett22 · 06-09-2010, 07:58 PM

Quote:

Originally Posted by rob323

Running a bov that vents to the atmosphere is not recommended on cars with an air flow meter (such as your car) as it will run real rich on gear changes. If the outlet from the bov was plumbed back in to the piping after the air flow meter but before the turbo, you will get correct air flow readings, correct fuel mixtures and no cel's.
Because the bov is open at idle, it is drawing in un-metered and unfiltered air and that is what is causing the cel's.

i think your absolutely rigth,tomorrow will take out the BOV, and weld the intercooling pipping.
theres no fun in having a cool sound in you car BOV, is thats gonna damage it.

fett22 · 07-13-2010, 03:39 AM

here;s the update i went to track and i am doing 15.5 s , and 15.9 with wet track, i have stock mufler with Cat, i will install a magnaflow and take out the cat, also need to replace the BOV, maybe on wekend.
so these is how it went, great response at beggining , turbo start boosting at 2.5 rpm up to 4.5 like a charm,but at higher rpm, in third and fourth gear , from 4.5 to 6 rpm engine acceleration decrease a lot. I need a few advices of what to do.
Also stock clucth is not responding so well, i felt a lot of power its been loosing from that ?

Before turbo i was doing 17.4 , so i gain almost 2 seconds, i have a friend that with same car turbo , its doing 14.8 just with turbo, no exhaust no aftermarket clucth ,
so what can be wrong with my car?.
i am boosting 0.5 bar, thats what trd computer its setup.

i am plannig to take it to 14s , so besides clucth, muffler ,crank pulley, what are other mods i could do?

Thanks for all.
Rodrigo.

cali yaris · 07-13-2010, 11:29 AM

Before you consider more mods, make the car as fast as possible like it is.

What gauges are you watching while you race?

rob323 · 07-13-2010, 04:42 PM

Pressurise the intake to check for air leaks and a leaking bov. They will cause a loss of power at the top end.

PETERPOOP · 07-13-2010, 09:55 PM

Quote:

Originally Posted by fett22

Before turbo i was doing 17.4 , so i gain almost 2 seconds, i have a friend that with same car turbo , its doing 14.8 just with turbo, no exhaust no aftermarket clucth ,
so what can be wrong with my car?.
i am boosting 0.5 bar, thats what trd computer its setup.

i am plannig to take it to 14s , so besides clucth, muffler ,crank pulley, what are other mods i could do?

Thanks for all.
Rodrigo.

In all respect, maybe he's a better driver?

06-09-2010, 12:28 AM	#26
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	Now looking at what he said that looks very awkwardly setup. I can somewhat see it going T'd from throttle body nipple, to the bov, then T'd back into a checkvalve into the MAF sensor/airbox? Last edited by Nexus1155; 06-09-2010 at 12:39 AM.

07-13-2010, 11:29 AM	#34
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	Before you consider more mods, make the car as fast as possible like it is. What gauges are you watching while you race? __________________ 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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06-08-2010, 11:24 AM	#20
fett22 View User's Garage Drives: 2004 yaris t-sport turbo Join Date: Aug 2009 Location: Costa Rica Posts: 21	Still having the air leak after replacing the o ring, defenety the BOV is ruined,but sounds so good . I am concerned about air/ fuel misture with these leak , is not some much air what i am lossing, but maybe after some miles i will have again the CEL, TRC AND VSC ligths have to wait to see whats up with that.

06-08-2010, 09:24 PM	#22
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	Do you have a scantool to read the DTC that causing the CEL to light? Did you swap your ECM for the one you received with the turbo? If so, did it come off of a Vitz that had TRAC and VSC?

06-08-2010, 10:02 PM	#24
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	Did you pressure test it or just slap everything together? If not, build a pressure tester, hook up some air w/ a regulator! and see how it goes, you probably have more leaks than you think. In reality, we all like to believe its easy to slap something together and just have it work, but theres always going to be small hickups.

06-08-2010, 11:23 PM	#25
Yaris0609 Drives: 09 Yaris 3 DR HB Join Date: Jun 2009 Location: Tucson, AZ Posts: 49	can you tell us where you have the vac line for the blow off valve hooked up? looks to me like thats the problem, I just cant tell where the line t's to. I see it going from the throttle body to the "t", then from there i can't tell. You should be pulling vac for the BOV after the throttle plate, like from a nipple in the intake manifold.

06-09-2010, 01:01 AM	#27
Yaris0609 Drives: 09 Yaris 3 DR HB Join Date: Jun 2009 Location: Tucson, AZ Posts: 49	in the parts diagram, there is no picture of a BPV. Maybe Toyota wanted it that way, small motor, small turbo, no reason for an anti lag valve(BPV), that turbo probably makes max boost at no rpm. If you want to run that BOV, you might need to plumb it differently....

06-09-2010, 10:28 AM	#28
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	Looks like it's routed TB-"T"-BOV/EVAP purge valve. You might want to add a One Way vacuum valve just before the EVAP valve. You might be leaking boost through it.

06-09-2010, 11:07 AM	#29
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	Recirculate it..... BOV is cool for noisez i won't lie

06-09-2010, 06:11 PM	#31
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	Running a bov that vents to the atmosphere is not recommended on cars with an air flow meter (such as your car) as it will run real rich on gear changes. If the outlet from the bov was plumbed back in to the piping after the air flow meter but before the turbo, you will get correct air flow readings, correct fuel mixtures and no cel's. Because the bov is open at idle, it is drawing in un-metered and unfiltered air and that is what is causing the cel's.

07-13-2010, 03:39 AM	#33
fett22 View User's Garage Drives: 2004 yaris t-sport turbo Join Date: Aug 2009 Location: Costa Rica Posts: 21	here;s the update i went to track and i am doing 15.5 s , and 15.9 with wet track, i have stock mufler with Cat, i will install a magnaflow and take out the cat, also need to replace the BOV, maybe on wekend. so these is how it went, great response at beggining , turbo start boosting at 2.5 rpm up to 4.5 like a charm,but at higher rpm, in third and fourth gear , from 4.5 to 6 rpm engine acceleration decrease a lot. I need a few advices of what to do. Also stock clucth is not responding so well, i felt a lot of power its been loosing from that ? Before turbo i was doing 17.4 , so i gain almost 2 seconds, i have a friend that with same car turbo , its doing 14.8 just with turbo, no exhaust no aftermarket clucth , so what can be wrong with my car?. i am boosting 0.5 bar, thats what trd computer its setup. i am plannig to take it to 14s , so besides clucth, muffler ,crank pulley, what are other mods i could do? Thanks for all. Rodrigo.

07-13-2010, 04:42 PM	#35
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	Pressurise the intake to check for air leaks and a leaking bov. They will cause a loss of power at the top end.