1ZZ throttle body - Toyota Yaris Forums

*tk-421* · 10-07-2009, 04:49 PM

In my case it has been a pretty cool mod to DIY. The only real PITA was getting the hose to fit. I swapped the chip and bypassed the coolant line. I've never had any CELs and it's been running strong for at least 5000kms. I do get a high idle (~2.5K) for the first couple of minutes and some oscillation (~500 RPMs) when warm.

The car feels more responsive and it is most noticeable in the mid to high range.

thebarber · 10-07-2009, 05:00 PM

Quote:

Originally Posted by tk-421

The only real PITA was getting the hose to fit

you can rotate the inlet connections on the tb to match the angle of the 1nzfe throttle body

Gideon · 10-07-2009, 07:37 PM

The Yaris throttle only opens to 80% at WOT IIRC, so anything of a larger diameter will be limited as well, although you're increasing the amount of air to the engine regardless.

My 1ZZ TB has been on for over 5,000 miles with no issues. No chip swap, I just let the ECU do it's thang. No CEL either, although I had one initially so it might have gotten tired of displaying it on the cluster.

I have a high idle like tk when cold, (2.5K) but it goes away when the engine warms up.

10-07-2009, 04:49 PM	#1
tk-421 Super Moderator View User's Garage Drives: 5D-07-LB Join Date: Jan 2007 Location: Dagobah Posts: 4,263	In my case it has been a pretty cool mod to DIY. The only real PITA was getting the hose to fit. I swapped the chip and bypassed the coolant line. I've never had any CELs and it's been running strong for at least 5000kms. I do get a high idle (~2.5K) for the first couple of minutes and some oscillation (~500 RPMs) when warm. The car feels more responsive and it is most noticeable in the mid to high range. __________________ --[ FORUM RULES ]--[ SEARCHING TIPS ]--[ EYELIDS PICS ]--[ RBK SPOILER ]--[ BEST/WORST INVESTMENTS ]--

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10-07-2009, 07:37 PM	#3
Gideon ★weeaboo★ View User's Garage Drives: 2008 Bayou LB Join Date: Oct 2008 Location: Sunnyvale, CA Posts: 661	The Yaris throttle only opens to 80% at WOT IIRC, so anything of a larger diameter will be limited as well, although you're increasing the amount of air to the engine regardless. My 1ZZ TB has been on for over 5,000 miles with no issues. No chip swap, I just let the ECU do it's thang. No CEL either, although I had one initially so it might have gotten tired of displaying it on the cluster. I have a high idle like tk when cold, (2.5K) but it goes away when the engine warms up.