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Old 03-05-2009, 08:49 PM   #73
tk-421
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Yeah I think I can do it by myself as well, although I usually choose to do it through the dealer because I get a 30-day warranty on installation.

I'm currently looking for a silicone coupler to try again. They'll install the TB for free the next time I go for an appointment, so I'm not too mad.
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Old 03-05-2009, 08:57 PM   #74
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Im sorry, I dont think I said it correctly, you can only use a coupler like that if you have an aftermarket intake, unless you can take a small piece of aluminum tubing around 2" long to piece it together with.
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Old 03-13-2009, 11:17 AM   #75
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Anyone know if there is a pronlem installing this throttle body with a AFE intake?
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Old 03-27-2009, 09:01 PM   #76
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Anyone know if there is a pronlem installing this throttle body with a AFE intake?
good question, i'd like to know the answer as well
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Old 03-27-2009, 11:07 PM   #77
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how does the AFE connect to the TB?
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Old 03-28-2009, 01:28 AM   #78
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I believe the AFE uses a 45 degree rubber coupler that is sized to the stock TB, please correct me if I am wrong, I do not know if it is stretchable.

If this is indeed the case, then you can use a small piece of aluminum piping and the silicone rubber coupler mentioned before.
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Old 03-28-2009, 03:19 AM   #79
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I have the TB installed with an aFe intake.

Had to heat up the the rubber coupling in hot water for a bit to make it stretchable enough to fit. Install all nuts on the TB first before trying to put the rubber coupling on as it's thick enough that the TB mounting studs are pressed hard into the sides of the coupling.
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Old 04-02-2009, 09:10 PM   #80
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Installed the 1zz tb today, it was a relatively simple swap. Here's what happened after it was installed:

I let the car sit in the "on" position for 10 minutes
I started the car to get it up to operating temperature
-the idle swung from ~1400 rpm to ~2500 rpm for five minutes then idled at ~1500
I drove around town and some country roads for fifteen minutes, the idle varied while in neutral
I then parked the car and the idling became "normal" and rested around 900 rpm
I shut the car off and drove it again about an hour later...the idle was pretty low, around 600 rpm.
The car now idles around 600 rpm without any oscillation or CEL :)

I DID bypass the coolant lines and I did NOT swap the chip (yet) I'm going to drive around with this setup for a couple of days to see if there are any irregularities before I decide whether or not to swap chips.

Oh, I definitely can feel the difference in my 0-60 distance, it pulls stronger after about 4000 rpm all the way to about 80-90 mph. Great performance mod for under $60
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Old 04-02-2009, 09:19 PM   #81
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on another note, does anyone know the name of the part that the throttle body bolts up to? since the 1zz tb is much wider in diameter than the 1nf tb, the stock cylinder part that the 1zz gets bolted up to blocks a tiny bit of airflow, not allowing the 1zz to maximize its potential. i was wondering what this part is so i could see if i could find a mate for the 1zz tb.
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Old 04-02-2009, 09:42 PM   #82
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on another note, does anyone know the name of the part that the throttle body bolts up to? since the 1zz tb is much wider in diameter than the 1nf tb, the stock cylinder part that the 1zz gets bolted up to blocks a tiny bit of airflow, not allowing the 1zz to maximize its potential. i was wondering what this part is so i could see if i could find a mate for the 1zz tb.
it connects to the intake manifold...
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Old 04-02-2009, 09:46 PM   #83
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it connects to the intake manifold...
right, i didn't know if there was a specific name for the small portion right after the tb...or is that just the intake manifold?
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Old 04-02-2009, 10:40 PM   #84
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would a TB from either a camry or a rav4 fit? i found some on ebay. or the bolts won't line up.
idk for sure, but a 1zz is used for many toyotas...do they have the 1zz-fe motor? i thought the camry and rav-4 motors were larger?
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Old 04-02-2009, 10:58 PM   #85
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no, i don't believe it is the same
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Old 04-04-2009, 01:46 AM   #86
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Update:

This morning on the way to school, my car threw 2 CEL's: 2103 and 2111. Basically, the TB valve was stuck on WOT and when I hit the gas from a dead stop, nothing happened...the engine speed did not even increase.

I ended up swapping the chips (sensors) from the two throttle bodies and so far, so good. there is a high rev on cold start ups but after that, it settles down to around 900 rpm...without adjusting the idle set screw.
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Old 04-04-2009, 03:45 AM   #87
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Once you get that screw adjusted life will be even better. I noticed that with the idle set screw left in the "corolla" position, the transition to DFCO was pretty rough.

With the screw adjusted to a 600-700 rpm warm idle, DFCO transitions are back to near-stock.
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Old 04-04-2009, 02:18 PM   #88
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I just re-installed the 1zz throttle body, this time with the 1nz chip swapped onto it, and it still oscillates, so im leaving the battery unplugged longer this time. Did anyone have any initial oscillation before it settled on just a high idle?
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Old 04-04-2009, 02:31 PM   #89
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I just re-installed the 1zz throttle body, this time with the 1nz chip swapped onto it, and it still oscillates, so im leaving the battery unplugged longer this time. Did anyone have any initial oscillation before it settled on just a high idle?
i think just about everybody had that, i think it's normal.
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Old 04-04-2009, 02:37 PM   #90
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awesome, now I'm not mad anymore, lol, I get so pissed whenever I try something and it doesnt work, makes me feel so incompetent when I know I'm fully capable, lol
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