[HULZAZZ]

With the Unichip at WOT, AFR is at 11.0. Without the Unichip it would be in the 9.5 - 10.0 AFR.
Yes, I have a Wideband and a boost gauge hooked up and mounted on the steering column.
I don't know what the ECU may/may not have learned, all I know is my AFR consistently stays at 11.0 during WOT. I think what what really made a difference is the tuner told me he was able to add a little bit of timing back in with the Unichip and you can't do that with the MAF calibrator. I know a lot of people are down with the Unichip, but mine seems to be working great. That has been my experience with it, hope that helps. For anybody thinking of using a Unichip with a custom tune; do all of your mods first, then consider getting a custom tune.
Later...

So your AFR was pretty flat across the rpm range with no spikes prior to the Unichip?
I just ordered a wideband so I can test a little ******* way I'm thinking to lean out the AFR for under $100. Plus once I go FI it will be good to have.

Post MAF un-metered air leak controlled by a solenoid at WOT??? Will it work? I'll find out soon unless someone gives me a good reason not to. It should lean the AFR out, but the real question is will it advance timing at all? I'll use some OBD2 scanner software I have to monitor.

 

[HULZAZZ]

I think the O2 sensors will still notice it... I dunno for sure tho. May be worth a try for the track...

I also had several discussions with Uni, I think it was even Jack whom I had talked to...

I learned that even if you make more power you may not see much if any gain in 1/4 mile times on a stockish truck. The truck still has torque management (more or less) and it is a smart bitch and tries to save itself...

Meaning, if you launch hard with a uni, the truck will still limit the power to the trans if it see's it is operating outside of normal characteristics....

He also told me to try doing roll-ons vs launching, and it actually made a difference, a big difference. Once the truck is moving and doing 3-5 and then tromp it it pulls harder than just launching. At first I thought he was bs'ing me but he isn't. Uni can and will make more power in most cases, however if that power can't be put to the ground when you want it then most will not be happy.


Now as for the afr ratio, Damn, that is pig rich. On my quad I am looking more around 13.5-14:1 or so if I remember correctly for tuning with an afr monitor installed. ( I have one, haven't installed it yet... Need to, then need to find all the notes on tuning it with an afr monitor for power)

At WOT the truck should go into open loop and fuel/timing is based off preset tables according to MAF readings, but with these Trucks you never know.

My truck hits the rev limit on the 2-3 shift if I punch from a dead stop. From a roll on it shifts fine. I don't know if my tranny is messed up or a glitch in the nannies. These trucks are just too complicated.

 

[HULZAZZ]

Well I will find out soon. If it works and there is any noticeable gain, just using it occasionally under WOT at the track might not give the ECU time to learn/correct(if it can actually do that). For all I know with my custom intake and exhaust may have already leaned it out to the ideal AFR. Once I get the wideband on there I will know for sure.
I decided to sell my Civic, so the truck has become my new tinkering toy.

 

[HULZAZZ]

as you drive during normal operation your ECU tries to keep the truck within parameters set by Toyota engineers, in doing so it keeps notes, per say. It uses these notes to estimate the tune for WOT, and at WOT it ignores the Mass Air Meter, unfortunately your controlled vacuum leak will do nothing.

The trick is to make your 02 sensors read artificially rich, they are the end all sensor that the ECU uses to determine final tune. If the ECU sees a rich condition compared to pre set maps it will adjust (lean out a/f ratio) and you just did what all other tuners are trying to do.

Most vehicles I am familiar with use MAF to calculate load and have pre- determined ignition/fuel tables based on load? If what you are saying is true does this truck have a MAP sensor that I am not aware of to determine load?

 

[HULZAZZ]

That went over my head...
How can you lean out the AFR for under $100?
and how exactly does "Post MAF un-metered air leak controlled by a solenoid at WOT??? " work???

I can't say if it will work or not, but normal cars with a MAF if you have air coming in un-metered by the MAF it will cause a lean condition and possibly advance timing. I was going to wait till I did some experimenting, but I wanted to get some opinions on the theory.

I guess I just can't help the ******* inside of me and my urge to tinker. People said I couldn't put an old M90 supercharger on a Civic and make it work, but I did. I boosted my car for $500 and added aprox. 100whp. I could have got at least another 40whp out of it but the fuel system was near max. Never got my 11 second slip due to traction issues and weak clutch. The car is about to be sold Friday and honestly I was ready to sell a while back, but wanted to prove my setup would work.
Project double agent. NA/M90 Supercharged K20 EG Civic - K20A.org .:. The K Series Source . Honda / Acura K20a k24a Engine Forum

 

[HULZAZZ]

I think I may have made a mistake, the 02 sensors are ignored, not the mass air meter. your trick may work. it;s late and I worked a 14hr. day LOL

Now that sounds like a normal car to me.
I forgive you. I work nights offshore and those 14-18hr shifts can take a toll on you.