DIY - 1.8L 1ZZ-FE TB Connector Chip Swap

[bobolinko]

My Motor is a 2ZR-FE

Is there anyone with knowledge about a TB Swap For My Motor ?
I'd be really interested to find any information to that end!

Thank you guys!

[kustom play]

so was the scion TC TB good as well?

Somebody has an extra one they can give me, dont want to waste the time doing it if it wont work

[weapon5]

sorry a bit confuse where is the chip?

[Yaris_That]

2006 Yaris Hb RS 4 door 5speed.
So I did the tb swap yesterday. What a difference it has made. I drove 200km last night with no noticeable problems, just when I shift the rpms hold for about a 1/2 second and on cold start engine will start at 3000rpm then 20sec later it goes to 2000rpm and once fully warmed up idles at 557rmp. NO check engine light. During installation battery negative side was disconnected. I did not do the chip swap yet, I did not do coolant bypass because here in Canada Ottawa it's cold. To be able to hook up coolant lines I had the lengthen ONE of the two coolant lines. The one that goes to the right side of engine. I did adjust the idle screw 1 1/2 counter clockwise and then an other 45 degrees counter clockwise. As for the TB I made my own gasket that is fitted around the ends of the TB I did keep the stock o-ring/seal in place. As for the chip swap I will wait a bit, don't really see a need to swap it yet. I do plan on installing an inline catch can with filter due to the increased air flow. Any comments or suggestions would be appreciated.

[tk-421]

Nicely done! Extra points on the DIY gasket.
I'm thinking the chip swap is not necessary, although it may depend on the TB serial number... Still, I wouldn't touch it if there's no CEL

[Yaris_That]

Originally Posted by tk-421

Nicely done! Extra points on the DIY gasket.
I'm thinking the chip swap is not necessary, although it may depend on the TB serial number... Still, I wouldn't touch it if there's no CEL

Only thing I'm wondering is, will it solve that 1/2 second rmp hold when shifting. As for the 3000rpm at cold start doesn't bother me at all.

[tk-421]

Originally Posted by Yaris_That

Only thing I'm wondering is, will it solve that 1/2 second rmp hold when shifting. As for the 3000rpm at cold start doesn't bother me at all.

It most likely will not. You might want to look into getting a throttle controller to tweak that to your heart's content.

[Yaris_That]

Originally Posted by tk-421

It most likely will not. You might want to look into getting a throttle controller to tweak that to your heart's content.

Really, never thought of getting one. I noticed that your using the NTD Throttle Controller, has it helped with that problem?

[Yaris_That]

As for the people who are having problems with the idle set screw, this is the hardest part of the TB swap in my opinion. Getting the screw to turn, Position the TB on a vise DON'T tighten the vise to much or you might crack the TB hosing. I chiseled away as much of the epoxy as I could using an assorted set of precision flat head mini screwdrivers and mini hammer. Try to get as deep as you can into the taper at the base of the screw, After that I covered the ends of the TB and sand blasted the idle screw area. Then I got a T10 torx bit and hammered it into the head of the screw until seated to the bottom of the head, making my own thread pattern that is a way tighter fit and less likely to strip when trying to remove with intended Allen key. I tried with Allen key and was starting to strip. Also the hammering action helps to free up the threads by cracking away any remaining epoxy stuck in the threads. I would NOT recommend this but I also applied a bit of heat to the screw using a small flame torch.
In the end I wanted to be as careful as possible not to damage the idle screw for I did not want to have to tap and die in a new idle screw and possibly cause an other problem.

[tk-421]

I've been using it for months and it's great. The throttle lag is almost completely eliminated now.

[fase4]

My yaris is 1st gen so my TB is drive by wire and not chip, besides the 1zz TB it's linkless tipe so I doubt this mod will work for me... Any idea of what I can do?

[tk-421]

Well, DBW does have the advantage of having no lag at all, so I can't think of anything as far as the 1st gen throttle body is concerned... Something like an upgraded intake should yield slightly better throttle response, however.

[fase4]

So this mod its not suitable for me? I think the 1zz TB is better for having a larger diameter but there is more concept here?

[Goosecreekjoey]

Way cool

[ikenty]

I know that I am late to the party but I just did mines.

2008 Toyota Vitz RS
JDM 1NZFE with Rocker Arms & EGR
Ported intake to match throttle body.
1ZZ Throttle body part no: 22030-0D031

I haven't done the chip swap as yet but I bought three throttle bodies to experiment so if needs be I will swap the chip using my spare 1nz throttle body and one of the other 1zz throttle bodies.

First start was 4500rpm dropping back down to 2000rpm so I drove it away so as not to wake the neighbors. After it got warm the idle was oscillating between 1000rpm and 2000rpm then it dropped to 800rpm idle.

After the first spirited drive about 50 kms the car idles at 800rpm. No CEL thus far.

I have a blitz throttle controller and the list of vehicles which it fits have 1nz, 1zz, 1az, 2az, 2zr, 3zr.

The 2zr and 3zr throttle are options for 1nz throttle upgrade aswell.