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03-17-2015, 08:28 AM | #1 |
Obsessed with 1.5L
Drives: '10 PW Yaris Sedan Join Date: Feb 2011
Location: Westminster, MD
Posts: 907
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very low boost possible?
On tercels you can run up to 4lbs of boost before doing anything to the ecu and fueling. I know this cuz i did it to my car and a few others. Can that be done on the Yaris as well?
The reason is i have most of the stuff gathered to turbo the damn car finally and the itch is really getting to me. I think i asked this a long while ago but I cannot recall the answer
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-Greg...the Exhaust Freak. -10 PW sedan 107whp/110wtq, full exhaust, suspension bits, TRD LSD -06 Highlander 3mzfe Limited AWD -82 Malibu, 1uzfe swap -97 Tercel coupe, 1nzfe/4.31 -96 Tercel coupe, Turbo 5efe, autoX -96 Tercel 4dr |
03-17-2015, 07:53 PM | #2 |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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My bet is no. Modern cars have such aggressive closed loop control of the AFR to optimize for fuel economy that you would be lean whenever you were in boost.
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03-17-2015, 11:18 PM | #3 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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I'm going to attempt it in a few months. If it works then yeah, if not, I'll just lock the wastegate open until I can get fuel adjusted. But seeing as how the car run pretty rich from factory under heavy acceleration, I don't foresee a problem running 4 PSI.
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03-18-2015, 07:51 AM | #4 |
Obsessed with 1.5L
Drives: '10 PW Yaris Sedan Join Date: Feb 2011
Location: Westminster, MD
Posts: 907
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Yeah. My tercel ran stupid rich na. At 3.5lbs i picked up nearly 30wheel and 3mpg and still was mid 11s afr. After 4lbs it would go into fuel cut.
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-Greg...the Exhaust Freak. -10 PW sedan 107whp/110wtq, full exhaust, suspension bits, TRD LSD -06 Highlander 3mzfe Limited AWD -82 Malibu, 1uzfe swap -97 Tercel coupe, 1nzfe/4.31 -96 Tercel coupe, Turbo 5efe, autoX -96 Tercel 4dr |
03-18-2015, 09:12 AM | #5 |
2ZR swap. DO IT! Ask how!
Drives: 09 Meteoric Metallic HB Join Date: Feb 2011
Location: West Michigan
Posts: 2,333
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In theory you could use a Blitz S/C piggyback--assuming you could find one on the cheap. I haven't looked at what's inside of it, but maybe CT has. I've reverse engineered the throttle position switch, but that was all passive components. If there's a programmable chip in the piggyback, there's not much I could do with it, but I may be able to sort out the passive components.
I wonder if it would be possible to use a signal conditioner--or equivalent circuit--to modify the wideband signal to trick the engine into running rich. Hmm... |
03-18-2015, 09:47 PM | #6 | |
Quote:
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03-18-2015, 09:51 PM | #7 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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03-18-2015, 09:57 PM | #8 | |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Quote:
As far as the comment about the Yaris running rich, it really does not. If you watch the AFR on a stock yaris it runs around 13.8 when cold, then aggressively maintains stoich (14.7), until it goes open loop at WOT. At that point it seldom drops below 12.8.
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03-18-2015, 10:21 PM | #9 |
Sorry man just couldn't help myself. I read somewhere that EL Prototypes did an extensive testing on the 1.5 1 NZ-FE with higher boost supercharging and found the engine could only run about 5 psi of boost. The TTE supercharger only runs about 5 psi I believe. Also read the blitz charger of markyboys is running .7 psi of boost. You may want to talk with someone in person that knows about this stuff. Good luck!
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03-18-2015, 10:56 PM | #10 | |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Quote:
The most critical component of reliability with boost is fuel control.
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03-19-2015, 07:07 AM | #11 | |
Quote:
Last edited by Flammable; 03-19-2015 at 07:18 AM. |
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03-19-2015, 07:50 AM | #12 | |
2ZR swap. DO IT! Ask how!
Drives: 09 Meteoric Metallic HB Join Date: Feb 2011
Location: West Michigan
Posts: 2,333
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Quote:
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03-19-2015, 08:43 AM | #13 | |
Drives: 2010 black yaris Join Date: Oct 2010
Location: savannah, ga
Posts: 2,868
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Quote:
The yaris is a great little car and has a lot of potential outside of the eco life.
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-Derrick- "Racing is important to men who do it well. When you're racing... It's life. Anything that happens before or after, is just waiting." |
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03-19-2015, 08:54 AM | #14 |
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,744
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Flammable member for a month. Other contributors to the thread membership 4 years and greater.
The OP and other contributors are well aware of how the 1NZ handles boost applications, whether it be s/c or turbo, at 6+ psi. There have been many builds done and documented here over the years making this the largest repository of information anywhere specific to boosting the Yaris. Of course you are going to get flamed for coming in here and stating you read something somewhere without a true understanding of what has gone on here in this forum since 2006. I guess your screen name kinda makes sense... Now let's get back to the business of establishing a knowledge base for sub 6 psi boost levels.
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03-19-2015, 09:01 AM | #15 |
I wasn't trying to start something was just having fun with the OP with my original post. Guess there isn't much tolerance here that kind of thing, my bad.
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03-19-2015, 09:08 AM | #16 |
Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008
Location: Georgetown, Ontario, Canada
Posts: 5,744
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That is what emoticons are for, to convey attempts at humour or good natured ribbing. We have lots of tolerance for poking fun at people provided that your messages can convey that intent.
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03-19-2015, 09:21 AM | #17 |
That is why I put the "lol" at the end of my original post. I understand now I should not have interjected later with what "I read" about boost but I was not trying to BS the OP which was why I said he should speak with someone personaly that has knowledge about boosting. It was early in the thread still and I did not realize many of you guys know each other and have a tight bond and for that I apoligize. I will bow out of here so you guys can continue your discussion. Cheers.
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03-19-2015, 09:36 AM | #18 |
Obsessed with 1.5L
Drives: '10 PW Yaris Sedan Join Date: Feb 2011
Location: Westminster, MD
Posts: 907
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Im well aware of the 1nz and its capabilities. Its more of 'what can i get away with since i bought a damn house'
I think soon ill start working on all the plumbing and getting it ready. Like i did with my tercel...i fooled around for the better part of 3 years before i finally got everything made for its final install and its been totally reliable for almost 35k
__________________
-Greg...the Exhaust Freak. -10 PW sedan 107whp/110wtq, full exhaust, suspension bits, TRD LSD -06 Highlander 3mzfe Limited AWD -82 Malibu, 1uzfe swap -97 Tercel coupe, 1nzfe/4.31 -96 Tercel coupe, Turbo 5efe, autoX -96 Tercel 4dr |
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