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OK. Starting with the proper short pulse adder data I am going to extrapolate out beyond the acceptable min pulse value with the understanding that I will lose shot to shot accuracy . Logs I have...

That makes perfect sense. Sounds like my next step is to ask him to drop the min injector pulse and tweak the short pulse adders.

I would agree with you... yes.

Yes. If you command an afr lower than stoich(rich) the narrowband voltage will increase to around 1000mV. This will also be reflected in the wideband.

First I would say don't do anymore full...

I see that. I don't think i'd be concerned. When you are that close to the switch point of the sensors it doesn't take much to get them oscillating.

I should add that the fuel ratio is what causes...

It looks like there may be confusion on what the oxygen sensor signals look like and mean. I believe the spike you are talking about is just the oxygen sensor reacting to the changing air fuel ratio....

I am trying to help a friend tune his swapped turbo gen 3 camaro. He is running 80 pound injectors and the factory return fuel system with a referenced regulator. I entered proper data, and changed...

Here is the log file and tune...

Copied from another post I made...

OK. I finally was able to visit a local dyno dynamics shop yesterday for some baseline runs. In total I made 6 pulls, 4.5 of which it took to get the ramp rate...

My camaro had a vortech setup with the maf in place at 10 pounds. It's not the greatest solution imo, but it works. As Rinkrat mentioned... you could keep the stock maf setup and tune with 2 credits,...

I believe you can tune VE regardless. The operating system just determines how the computer uses the information.

I'm wondering if anyone has had issues where too much advance in the lower airflow/speed regions have translated into knock at wot. I have been chasing some knock at WOT with my setup, but it seems...

Yeah the fall days are really nice. Great for a cruise... unfortunately I almost feel irresponsible if I drive the car without really getting into it. The plate is a McLeod 360820 and the disc is...

Negative. Single racetronix with the venturi feed plugged, and the bucket drilled out. I know this isn't the best, and I'd prefer something more reliable, but it's what I have to work with right now....

So went out tonight to try a couple more items. I want to hit the dyno this saturday so i'm trying to get everything in line. Bad news is I appear to be out of fuel pump at around 5200 RPM. I ended...

Great thanks. Yeah I'm shooting for exactly what you have there with the startup. I'll keep working on it and post up my findings. May head to the dyno this weekend if life allows.

Thanks again.

It's 1.7x4x6250x(1/60) not x 60. Actaully now that i think of it dynamic flow/cylinder will drop from peak torque till redline. I have a ref regulator setup which means my injector offset is flat. If...

The engine isn't consuming oil and the turbo is bone dry. PCV system is two vent lines (sorry EPA). The crank ve is based off my tuned ve. Timing is 22 flat in the idle table. Cranking is still...

So I read that someone had equated dynamic flow to whp. Your dynamic flow is off up top from your meth, however if you extrapalate out with your max cylinder flow of 1.7g/cyl 1.7g/cyl x 4cyl/rev x...

Yeah I'm going to try your plugs, timing light, and I also have a phormula knock listening device that I may try out with the headphones and such.

What I had researched about flame velocity after...

I don't think it's the fuel... I only use shell or mobil 93. Plus the detonation was after peak torque at the same timing angle, which is confusing. I have a set of the plugs you listed on your dyno...

The timing adjustments are proportional verified by the log. 1.27 is 40% of the timing delta (5degrees) 0degrees at 1.25phi and -5degrees at 1.3phi giving 5(.40) = 2degrees. With truncation it was...

OK... I keep on just adding posts here, but I'm actually making progress. I pulled my compressor cover this morning and added a tap for my wastegates. I was concerned that I was shielding the signal...

I actually used the afr timing correction to remove the lead up top. Basically as the afr approaches that of the higher boost levels I have it pulling out up to 5 degrees which will proportionally...

Wow! Changed the plugs, and the car is much more responsive. I will need to drive it again to verify, but I'd say that issue is solved
(still at 10-11 pounds). Backed the ignition down to 14...