It has Begun - Page 2 - Toyota Yaris Forums

WorkTL · 03-01-2015, 10:08 AM

Did you get the TB to work?

scod4025 · 03-01-2015, 01:51 PM

Yes and no It bolted right in but then the aFe intake coupler was a little small and it was hitting the bolts so pulled it all out and put in allen head cap bolts and removed the spacer nut on all the brackets that hold coolant line and wire for TB and seems to be working but don't like the way the wire bracket is sitting might cause a leak in the future also flipped the coolant line bracket around so now my hose doesn't rub against the CAM( see pics for this issues)

Also have a rough Idle for 20 or 30 min but once the car gets to good temp then it goes away(yes I have the high idle for 30sec at first start to) I've been adjusting the Idle screw but cant seem to get it right but will keep playing with it

WorkTL · 03-01-2015, 07:25 PM

Do you notice a increase in hp?

fnkngrv · 03-01-2015, 08:44 PM

The stock diameter pulley would be the way to go. The intention of the underdrive had been to deliver as much as possibpe since the mod doesn't necessarily give a ton of return on a stock setup. The MI version has been constructed with a better design than the NST and since it is stock size it will not mess with the charging system. This is especially important if you add additonal electrical demand....for example a couple amps to drive an audio upgrade, Heated seat kits, etc. NST doesn't even make a set anymore I do not believe for thw Yaris community and he never answered me when I attempted to talk to him in the last couple years.

scod4025 · 03-02-2015, 09:06 AM

I noticed a little increase in HP but the biggest difference was the throttle response that got much quicker which was noticeable to me during freeway driving, was able to accelerate so much faster at speed

But... if you haven't done your exhaust you will know it. When I lifted my foot could feel the restrictive flow. Felt like the car was down shifting, this got less pronounced when I went to 2" pipe from the resonator. But its still there ever so slightly think I need to remove resonator. Wish I didn't need the cat but, poor me I live in California

and I would never think of doing anything against the law

fnkngrv · 03-02-2015, 09:21 AM

You bring up the point I have been trying to make for years. The pulley swaps may not net you any real power gains, but they get you into the powerband a hell of a lot quicker which translates to better performance and then conversely is totally worth it. It makes the butt dyno happy.

scod4025 · 03-02-2015, 09:27 AM

So with that said will be getting the Pulley this month. Love that quick feel.

or the

isn't that car a gas saver

axiom · 03-08-2015, 07:34 PM

So, I just installed the MI intake manifold. Are those spacers for the head cover or to move the radiator hose away from the manifold tubing? I was able to use the stock nuts and bolts to put the head cover back on.

scod4025 · 03-09-2015, 08:21 AM

To tell you the truth I am unsure, I believe they could be used for either. I used them to lift my cover up off the intake manifold(I could have used stock nuts and bolts but it was touching), but I believe that they could be used for the hose as well, but I just flipped the hose bracket around and it gave me about 1/2" of clearance from the manifold. But I did also remove the stock bolts from around the TB and put in 6mm cap bolts so deleted the nuts that hold the bracket down, which if your still using would give you a little bit more space then what I have

scod4025 · 03-15-2015, 06:02 PM

Ok so spent all morning on it but finally got the TB dialed in right went from a fluctuating idle to a nice smooth one finally and was at 23mpg while it was off but with the driving I do

jumped back up to 27mpg

Have yet to get the cash together for the new pulley so that is on hold for now

scod4025 · 03-23-2015, 03:03 PM

Car is going on the Dyno tomorrow to see what my numbers are but think I'm still running a bit rich because of the TB but will get to see what all the bolt-ons have done

LTHatch · 03-23-2015, 03:51 PM

Very nice! Can't wait to see what it puts down, any chance you can run 91 in it with a reset?

scod4025 · 03-24-2015, 08:16 AM

I would but since I started bolting on its had nothing but 91 in it so wouldn't have an 87 base line for you but will post up the 91 numbers

scod4025 · 03-25-2015, 09:16 AM

ok here are my numbers

came out as 103.4 WHP
and had to run it a bit rich to get that number I leaned it out and then I couldn't break 100 oh well good baseline to start from

LTHatch · 03-25-2015, 01:16 PM

Dang those are good numbers for an auto! How did you add fuel(i didn't see any engine management mentioned in this thread)?

scod4025 · 03-25-2015, 06:19 PM

its kind of a cheat but with the TB you can adjust the idle stop and if you do it while the car is still running it screws with the ECU learning for a throttle use but only one time shot and only get a little bit of adjustment

ucsmfu · 03-27-2015, 02:54 AM

was the intake easy to install ?

Installing mine next week :P

scod4025 · 03-27-2015, 10:05 AM

It was for me. If your mechanically inclined most of the stuff I installed is a fast and easy install, If not will take a little bit longer but everything is straight forward so should be able to figure it out. I also removed the mounting bracket that the stock air box sat on (MAP sensor is zip tied to it) so could get AFE a bit lower and then was able to get AFE bolted to the battery bracket and front frame for stability they didn't mention removing it in the instructions they sent

03-01-2015, 08:44 PM	#22
fnkngrv Mr. 155 and climbing View User's Garage Drives: Seriously Modded 07 Sedan Join Date: Jun 2006 Location: In The Hotbox Posts: 4,742	The stock diameter pulley would be the way to go. The intention of the underdrive had been to deliver as much as possibpe since the mod doesn't necessarily give a ton of return on a stock setup. The MI version has been constructed with a better design than the NST and since it is stock size it will not mess with the charging system. This is especially important if you add additonal electrical demand....for example a couple amps to drive an audio upgrade, Heated seat kits, etc. NST doesn't even make a set anymore I do not believe for thw Yaris community and he never answered me when I attempted to talk to him in the last couple years. __________________ Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing *Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes.*

03-02-2015, 09:21 AM	#24
fnkngrv Mr. 155 and climbing View User's Garage Drives: Seriously Modded 07 Sedan Join Date: Jun 2006 Location: In The Hotbox Posts: 4,742	You bring up the point I have been trying to make for years. The pulley swaps may not net you any real power gains, but they get you into the powerband a hell of a lot quicker which translates to better performance and then conversely is totally worth it. It makes the butt dyno happy. __________________ Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing *Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes.*

03-15-2015, 06:02 PM	#28
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	Ok so spent all morning on it but finally got the TB dialed in right went from a fluctuating idle to a nice smooth one finally and was at 23mpg while it was off but with the driving I do jumped back up to 27mpg Have yet to get the cash together for the new pulley so that is on hold for now Last edited by scod4025; 03-16-2015 at 08:10 AM.

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03-01-2015, 10:08 AM	#19
WorkTL View User's Garage Drives: 2013 Yaris LE Join Date: Sep 2014 Location: SoCal Posts: 216	Did you get the TB to work?

03-01-2015, 01:51 PM	#20
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	Yes and no It bolted right in but then the aFe intake coupler was a little small and it was hitting the bolts so pulled it all out and put in allen head cap bolts and removed the spacer nut on all the brackets that hold coolant line and wire for TB and seems to be working but don't like the way the wire bracket is sitting might cause a leak in the future also flipped the coolant line bracket around so now my hose doesn't rub against the CAM( see pics for this issues) Also have a rough Idle for 20 or 30 min but once the car gets to good temp then it goes away(yes I have the high idle for 30sec at first start to) I've been adjusting the Idle screw but cant seem to get it right but will keep playing with it

03-01-2015, 07:25 PM	#21
WorkTL View User's Garage Drives: 2013 Yaris LE Join Date: Sep 2014 Location: SoCal Posts: 216	Do you notice a increase in hp?

03-02-2015, 09:06 AM	#23
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	I noticed a little increase in HP but the biggest difference was the throttle response that got much quicker which was noticeable to me during freeway driving, was able to accelerate so much faster at speed But... if you haven't done your exhaust you will know it. When I lifted my foot could feel the restrictive flow. Felt like the car was down shifting, this got less pronounced when I went to 2" pipe from the resonator. But its still there ever so slightly think I need to remove resonator. Wish I didn't need the cat but, poor me I live in California and I would never think of doing anything against the law

03-02-2015, 09:27 AM	#25
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	So with that said will be getting the Pulley this month. Love that quick feel. or the isn't that car a gas saver

03-08-2015, 07:34 PM	#26
axiom View User's Garage Drives: 2007 Yaris Join Date: May 2013 Location: Colorado Posts: 68	So, I just installed the MI intake manifold. Are those spacers for the head cover or to move the radiator hose away from the manifold tubing? I was able to use the stock nuts and bolts to put the head cover back on.

03-09-2015, 08:21 AM	#27
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	To tell you the truth I am unsure, I believe they could be used for either. I used them to lift my cover up off the intake manifold(I could have used stock nuts and bolts but it was touching), but I believe that they could be used for the hose as well, but I just flipped the hose bracket around and it gave me about 1/2" of clearance from the manifold. But I did also remove the stock bolts from around the TB and put in 6mm cap bolts so deleted the nuts that hold the bracket down, which if your still using would give you a little bit more space then what I have

03-23-2015, 03:03 PM	#29
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	Car is going on the Dyno tomorrow to see what my numbers are but think I'm still running a bit rich because of the TB but will get to see what all the bolt-ons have done

03-23-2015, 03:51 PM	#30
LTHatch Drives: 2013 Yaris Hatchback L Join Date: May 2013 Location: Newark NJ Posts: 229	Very nice! Can't wait to see what it puts down, any chance you can run 91 in it with a reset?

03-24-2015, 08:16 AM	#31
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	I would but since I started bolting on its had nothing but 91 in it so wouldn't have an 87 base line for you but will post up the 91 numbers

03-25-2015, 09:16 AM	#32
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	ok here are my numbers came out as 103.4 WHP and had to run it a bit rich to get that number I leaned it out and then I couldn't break 100 oh well good baseline to start from

03-25-2015, 01:16 PM	#33
LTHatch Drives: 2013 Yaris Hatchback L Join Date: May 2013 Location: Newark NJ Posts: 229	Dang those are good numbers for an auto! How did you add fuel(i didn't see any engine management mentioned in this thread)?

03-25-2015, 06:19 PM	#34
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	its kind of a cheat but with the TB you can adjust the idle stop and if you do it while the car is still running it screws with the ECU learning for a throttle use but only one time shot and only get a little bit of adjustment

03-27-2015, 02:54 AM	#35
ucsmfu Drives: yaris le Join Date: Sep 2014 Location: vancouver, BC Posts: 224	was the intake easy to install ? Installing mine next week :P

03-27-2015, 10:05 AM	#36
scod4025 Drives: 12 LE 5d HB 1nz-fe Automatic Join Date: Oct 2014 Location: Sacramento Posts: 101	It was for me. If your mechanically inclined most of the stuff I installed is a fast and easy install, If not will take a little bit longer but everything is straight forward so should be able to figure it out. I also removed the mounting bracket that the stock air box sat on (MAP sensor is zip tied to it) so could get AFE a bit lower and then was able to get AFE bolted to the battery bracket and front frame for stability they didn't mention removing it in the instructions they sent