Retrieve data from EMU - need help evaluating map

[skogs]

Finally i think i may have found the reason the AFR is too lean. In the settings the injectors is set to 550cc, but they are actually 540cc. Could this have a big effect?

[PSI-Motor]

No doesn't matter.

[skogs]

When is the AFR-table actually used?

[nathan-rydell]

for a couple of days ago you said that the afr was ok, but there is not a problem running lean on that boost, i think you push too many buttons and are too afraid that it is not correct to the stock ecu, it never gonna be eigter....go to the tuner and tell him to look over it and se if he can find anything, take it on the road and see what they can do, but as the stock they want get it like, as i can read in this whole thread you have to little experience to push any buttons yourself.... so don't do it, as i wrote to you earlier, it is a lot of toyotas running aggressive ignition under 3500-4000....... also on mine 250+ toyotas for the past 15 years....itspretty normal even if some in here are disagree...

and as many here tells you the board DONT need to look completely fine, it takes time but you don't have to doo it since you just use some of it, also I'm a engineer on ecu`s and engines.... maybe the best solution for you is a stock ecu

[skogs]

for a couple of days ago you said that the afr was ok, but there is not a problem running lean on that boost, i think you push too many buttons and are too afraid that it is not correct to the stock ecu, it never gonna be eigter....go to the tuner and tell him to look over it and se if he can find anything, take it on the road and see what they can do, but as the stock they want get it like, as i can read in this whole thread you have to little experience to push any buttons yourself.... so don't do it, as i wrote to you earlier, it is a lot of toyotas running aggressive ignition under 3500-4000....... also on mine 250+ toyotas for the past 15 years....itspretty normal even if some in here are disagree...

and as many here tells you the board DONT need to look completely fine, it takes time but you don't have to doo it since you just use some of it, also I'm a engineer on ecu`s and engines.... maybe the best solution for you is a stock ecu

I didnt see the afr problem because the WBO was not connected, even though the ecu-settings said it was and EGO feedback was enabled. 13 afr at 200Kpa is NOT good, i now that much. The log i posted was before any fuelling-settings was changed, and it showed dangerous lean levels.

[skogs]

I put in the VE-table that ECUmaster provided (copied it from the picture). And made a new log:

See how the target AFR and actuall AFR match, as they are supposed to do.

Now i just need to calibrate the PID-values for EGO feedback. If i remember correctly i need to increase the integral gain or reduce the proportional gain to reduce oscillation.
I have limited boost to 12psi and lowered gain on the boost controller, so i'm little safe before i take it on a dyno.

[skogs]

This is a log of a similar pull, after tweaking the VE-table and EGO-PI.

Getting the VE-table right is very time-consuming without dyno and much experience. But it can be done, apparantly. The goal is to tweak the table so that the target AFR and actual AFR match at all loads and rpms. When thats done properly, it becomes really simple to just use the AFR-table to alter the ratio.

Calibrating EGO feedback proved more difficult, any tips on how to do that properly?

Btw, From norway are we, nathan_rydell?

[skogs]

The car would run of course, but it would be week och run hot on both CLT and EGT.

Would be nice if the "tuner" of this car could come in and comment what he was thinking when he did this

Yeah, that would be great. Don't you agree Nathan?

[skogs]

I want to thank everyone in here for their help and advice. If it werent for you i never would have taken it on a dyno, and i probably wouldnt notice how badly it knocked with the original map, until it was too late.

The values from the old ignition table resulted in BAD knocking on the dyno. Resulting safe table is 2-4 degrees more retarded in the entire powerband. Too advanced timing at low rpm resulted in loss of power.

Over 300bhp shows significant gains over the stock 242bhp, and most of it comes from correct timing. Boost is only 2-3 psi over stock.

[PBU]

Hello Skogs

What are your O2 sensor settings ?
Mine is working and AFR not to bad but very spiky.




Grts
Patrick