Engine TRD SUPERCHARGER X100

There's a second hole to the right of the original knock sensor. I'm going to install Another 1 wire knock sensor and compare the signal outputs between the original and second location sensor to see the differences of signal. If they are close enough. I'll install the new type 2 wire knock sensor in the second hole since it's more sensitive and will pickup knock better than the 1 wire. I will try running the second knock sensor directly to the TRD ecu and the 1 wire will continue to go to the original ecu unmodified. I'm going to try borrowing my friend's oscilloscope to test these signals. The Second hole is actually the same diameter and depth as the original. Here's an image of what i'm talking about.


Added: Aug 9, 2012 7:41 AM
I also just ordered a wideband O2 sensor and will be monitoring the A/F ratio before and after. Closed loop and Open loop.

Yup. That second location is not great but it's something. Lol I'm going to use an Innovate MXT-L wideband system. It comes with datalogging software for the A/F ratio. Should have it installed tomorrow.

I'll be using a snapon Modis 4 channel osilloscope to get a base line knock sensor data. First test I'm going
to install a Second 1 wire knock sensor. Compare the differences in signals between the original knock sensor and
the second 1 wire. After that I will install the New 2 wire knock sensor in the second location to get a baseline
as well. Then for a third test. I will put the (2) wire knock sensor in the original location and 1 wire in the second
to see how that works.

I have a Mustang dyno at the shop that can put a heavy and moderate load on the engine to detect knock.
I'll Also do some freeway driving. But the test will be more accurate and controlled on the dyno.

I'm going to install the TRD Ecu prior to installing the supercharger for testing as well to see
how it controls the knock. It should work just fine. At the same time I'll be checking to make sure the fifth injector is pulsating as it should. I'll obviously run another set of tests after the supercharger is installed as well.

So after much research. I think the only way to run the TRD ecu properly is to run a second ecu that is made for the 2 wire knock sensor to provide the proper circuitry for the 2nd knock sensor. Then tap the TRD ecu off of that. I don't think You can just run it directly to the TRD ecu.

http://www.newcelica.org/forums/showthread.php?t=205701&page=2

That's a very good read for the differences in knock sensors.

So, If I can find a "CHEAP" 03-04 corolla or matrix ecu I will try this.
But I'm thinking the best way to run this setup, just like any other setup,
is to either run a stand alone or a combo of piggybacks.

These are your options.

FIRST:

Run a combo of piggybacks. Running a Split Second additional injector controller
to control the stock TRD fifth injector. Which is actually pretty good. Called them
earlier today and they actually have MAPS to upload to your controller prior to shipping
it to have a good "Starting" point.
http://www.splitsec.com/spike/Toyota-Matrix/spiketoyotaMatrix.html

With some other form of controlling ignition and fuel. FIC, Camcon, Greddy etc..

SECOND.

Run a Power FC with 2zz injectors and control everything. Period.
Added: Aug 15, 2012 5:25 AM
This isn't necessarily a "BAD" thing. You find plenty of supercharger kits without the TRD ECU for cheaper. Then you can spend the cash saved on buying proper tuning items.

I think It's because I haven't been clear why the knock sensor is so important. The TRD ECU makes
adjustments to your fuel ratio and ignition timing using the sensors on your engine. One of those
inputs is from the Knock sensor. It is designed to take inputs from a 2 wire knock sensor. However,
the knock sensor that is Stock on the 8th gen's is a 1 wire knock sensor. Now, it's not just a matter of
how many wires it has. They work differently and send out a different signal. You cannot send the 1
wire knock sensor signal to the TRD ECU because it is different then what the TRD ECU expects to
see.

Now you cannot just replace the 1 wire knock sensor for a 2 wire to make the TRD ECU happy because
now you have to deal with the stock ECU not getting a proper signal too. Thus the reason why I'm
talking about adding a second 2 wire knock sensor to the block to make the TRD ECU happy.


P.S. The Knock Sensor is very very very important. It tells your ECU that the engine is basically exploding inside the combustion chamber uncontrolled "not by spark plug". This
will destroy engines especially with BOOoOst.

If you have an in proper knock sensor signal. You will Most likely LOOOOSE a lot of power
and a log of MPG's. Making the whole reason of wanting to boost void

I'm curious too how this turns out. I hardly drive the Corolla anymore, but I would love to turn it into a project car.

It'll be a few more weeks. This research is taking up a lot of my time. I should just go ahead and do it already lol

What about using the celica ecu, or is the corolla/matrix one better because the supercharger was designed for those cars and the trd ecu was used in conjunction with them?

I'd have the same problem. Celica 1zzfe's used a 1 wire knock sensor 2000-2005. Mr2 as well. Corolla and Matrix are the ones that had 2 wire knock sensor

Oh now i see, makes sense

I'm not giving up on this project guys. Just going to take me more time to research this.

I think it's worth a shot. I'm going to go ahead and "try" to connect the 2wire sensor directly to the ECU to see
if it makes it happy lol. If it does, then we're golden.

Other then the AC issues. All other sensors appear to be interchangeable and will work.

I think someone should write up a thread teaching us noobs about tuning/auto electronics/fuel maps/ratios/all the confusing tuning software. Im so lost when it comes to this stuff.

Just finished my first "Rough" test of the second knock sensor location. By rough, I mean I'm using a DVOM hooked
up to the knock sensors in the 2 different locations. Then tapping the upper block by cylinders 1, 2, 3 and 4. Just taking a quick AC voltage reading. As expected, loss a little bit of signal when tapping cylinder #1 but still getting a good reading. I'm only loosing about .01-.02 compared to tapping it next to #4. Interesting findings is that the 1 wire and the 2 wire created just about the same amount of AC voltage from .01-.13, depending on how hard and or fast I tap the engine.

This weekend I will take the intake manifold off my car so that I can tap the engine still in the car and get actual live running readings off the oscilloscope with two 1 wire sensor hooked up. Then I'll compare the signals by overlaying them.

What I got out of this quick test.... I believe the 2 wire sensor WILL be able to connect to the
TRD ECU directly and work properly!!!


Added: Aug 16, 2012 4:29 AM

I wish there was an easy way to teach via internet text but the best way would be to buy a basic automotive electronics book and start from there by learning what each sensors job is, what to expect from them and how
the computer interprets them.
Added: Aug 16, 2012 4:50 AM

Hey James,

Maybe you can point me in the right direction. What kind and where should I get the proper shielded wire? I'm
thinking Fry's but I HATE driving to fremont during traffic times... LOL I think I only need about 25 Feet at most. Will this work? http://www.radioshack.com/product/index.jsp?productId=2062643

ANOTHER idea I had was to weld a bung next to the original Knock sensor location with one of these. http://www.ebay.com/itm/12mm-O2-Oxygen-sensor-bung-02-nut-fitting-/330640792554#ht_803wt_829

I'm only going to be testing the difference of signals between the two 1 wire sensors to see if the different Locations make a big difference. After that test, i'll install the 2 wire sensor.

I never said the original location wasn't ideal. The original location is perfect

Lol Hmm how about this...

2 same speakers in 2 different spots. I'll be listening to see which location sounds better or if they sound the same.

I'll put the 2 wire on the better spot since it's able to hear better than the 1 wire.


On a good side note. I just fitted the idler bracket and IT CLEARS our mount! So we're good there

I've been busy rebuilding a 1zz (Piston Mod) to install the supercharger on. My silver Corolla is burning way too much oil now. Short block is put together now. Tmw is head day. Hopefully I will install everything within 2 weeks.
Added: Aug 26, 2012 7:16 AM

I need to do that very soon my car has a light smoke when i gas it too hard and i get carbon build up on my bumper and trunk not heavy but i dont think seafoam will help at this point

Is the smoke black, blue, or white?

It's a black but once again not a thick black but i am running Mobile 10w30 Full synth, and i use 91 so i might be running rich

I had a puff of black smoke coming out of mine, it was making my rear bumper black...It was running rich, changed both o2 sensors and now my bumper is not that dirty

That definitely might be it ! but i do kind of burn oil i have no clue at what rate

who wants to find me some sensors lol