Hey guys, I'm going to be doing the repin and swap from my '85 ECM to the 86-89 '165 ECM. Then I'm planning on getting a flash chip installed so I can easily datalog/tune on the go without burning chips. I'm doing all of this so I can tune my 350+Tpi swap that I did last summer. My question is about O2 sensors. I've read about the LC1 from here on the boards, but I was wondering if there are any recommendations of other good Widebands, or if I'm even taking the right steps for tunning and if my O2 sensor should be first priority for tuning? I'm basically new at all of this, and was wondering where I should start after I swap the ECM in. Thanks for any and all responses!

I use a AEM UEGO with good results, plus I got it at an unbeatable price new from the locat tuner shop.

HI, I use the Zetronix ZT-2. Been using it for over a year, no issues so far. Dean.

Thanks guys! Those products seem great! I was under the impression that I was supposed to do all my data logging via the ECM which I was going to swap in, but according to Zeitronix, I can datalog with their ZT-2 it seems.

So does that mean I shouldn't worry about datalogging with my ECM, or should I do both? In order to actually make a change to my tune, I'd have to burn a new chip for the ECM based on my datalogs tho, correct? So, how do you guys do your tuning?

Having the WB in the datastream with the other engine data makes it much easier to line up the timeline of when things are happening.
Otherwide you have 2 files to try and see when you were rich/lean and figuring out when you were on the throttle and at what load/speed etc.
There are additional inputs to some WB kits that can add TPS, RPM, VSS etc.
The tradoff of using the ECM is logging speed is slow in comparison to the WB logging software but you need to run all the extra wiring rather than just adding the WB to the ECM.

Oh ok, thank you for clarifying that for me! So if I were to just get a wideband sensor to hookup with my ECM, what type of sensor alone should I get? The other ones that were mentioned above seemed packaged with all the datalogging equipment. I'm getting a good idea of all my options

i seen this thread and you seem to know some pretty good detail on these wideband O2 sensors... My question is I am looking to go to one, I have a mod 327 TPI from a 91 camaro. I am looking at the AEM inline wideband controler, i am curious if that is just a plug and play into my ECM 1227730? I am currently running a 3-wire heated O2, will the wideband help me with performance and fuel millage?

I have an LC-1 and it works fine and has lasted a long time on multiple vehicles for tuning. But the wiring is a pain and it does not come with enough wire, so your splicing in a middle if if you got their gauge...

If I had to do it again or if I would have known this is the one I would have got:
http://www.dynamicefi.com/TT-1.php

that TT-1 WB is that the kit w/O2 sensor for $189?

Yup!
I got to use one on a freinds car and it was a lot easier then the LC-1 plus tech support is way better!

cool thanks.
i got to ask do you see a diffrence in performance, matiance, and ease of problems using a Wideband O2 that a standard O2? what do I expect to see putting this on my system?

Well it does not replace your Narrow Band O2 to ECM although it has a simulated narrow band signal to go to ECM so you can install the Wide Band in it's place. Lots of guys weld in a new O2 bung for it too.

It gives you actual AFR from like 0 to 5 volts, like 7 to 1 AFR to 22 to 1 AFR. Where the narrow band gives AFR from like 0 to 1.1 volts. Only accurate around stoich 14.7 to 1 AFR.

I am trying to figure this out... so it does not replace the narrow band to ECU. so the ECU still uses the Narrow one for regulation. The wideband one is for monitoring only then?

The biggest issue with a WB setup using the Bosch sensor is too much heat. The sensor needs to be downstream several feet from the exhaust ports. Otherwise they over heat and go away.

This means that the stock NB O2 location isn't good to use. So that sensor can just stay in place.

The other issue is that if one uses the simulated NB output of the WB controller, the transport delay is huge. With the sensor so far from the engine, it just doesn't work out. The closed loop PID fueling routine lags way too much and the engine ends up surging.

Even our TT-1 WB has a simulated NB output. But in reality that is just because others on the market also have a simulated NB output. Although, we did take the time to make the simulated output sinusoidal.

RBob.

Would you mount it as far away as in the Y pipe of a single exhaust?

I read the TT-1 instructions and it said three feet from exhaust ports, this Y connection to single is 4 feet.

I've used the NGK afx several times, and it's one of the easiest to wire up too. I used it on my old 97 with a kb blower using an sct tuner to datalog and it worked great. I used one on my old v8 s10 to dial it in. Actually I still have the one I used on the cobra in the garage. I looked on your profile and seen you work at cat. I work there too, and if you want to take a look att he wide and sometime you can check it out.

After the Y is OK, even at 4' from the exhaust ports.

RBob.

I'm interested in the TT-1 WB. what is needed to get this all mounted up? I plan to do it soon and totally forgot that a an extra bung would be have to welded on, correct?

Yes, will need to weld or have welded the mounting bung. One is included with the system. Can see the users manual here:

www.dynamicefi.com/TT-1_UsersManual.html

RBob.

I was just looking through that. Found it after the post, Thank you!! I should be in a good position within the next couple of days. Ill email you then. Thanks