If so, what are you using and where are you putting the O2 sensor(s).

 

I ran a AEM in mine for awhile. I put it almost directly next to my factory o2 on the drivers side. The thing to remember is that the Factory O2's are actually wideband sensors and can be monitored with a durametric or brockaway unit. If you want to run one 24/7 though I'd suggest a AEM, or whatever you feel comfortable with it. With my standalone setup I have 2x o2's in the exhaust (making a total of 6 o2s total LOL!). I am able to monitor them 24/7 with the HKS AFK.

Now I warn you before you ask the standalone you have to convince Justin to install it LOL! It was put together, wired in, and tuned by Justin Nenni of Tuning Concepts. Since you are from the Supra world you know of him and his abilities, records, etc... LOL!

If you go with tuning though I'd suggest EPL, which is who I used when we were making 843rwhp SAE on the stock DME.

 

Wow, I had no idea the factory O2 sensors were wideband units. Learning more and more each day. I just google'd the Brockaway unit and it looks great for monitoring.

I don't think I will be qualifying for a standalone just yet. On the Supra it was a different story because it was very cost effective, and the tuning available on the stock ECU was VERY limited. It seems that's the exact opposite case here. As long as good drivability/idle/power can be made with the stock ECU I'm all for it.

My main reason for a frequent wideband read-out is that its a good sanity check on the tune for various driving conditions, and on a MAF equipped car its a good indication of any boost leaks that are developing etc. Just good for troubleshooting in general. Handy to have on a turbo car.

 

Oh I agree 100% on the sanity part. If I felt anything was wrong I (or my passenger) was watching the AEM like a hawk! Plus having the factory ones being widebands you are able to send in accurate logs to your tuner.