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As someone who lives on a chassis dyno..

For most NA applications there is no power to be had with a throttle body.

I've had 600 rwhp NA max effort cars pick up maybe 5 rwhp.


They are...

That's not how that works. The 2500RPM you have set in your tune is to enable/disable dynamic airflow calculations. Both MAF and VE are active always.. The weight goes to one or the other more...

I don't think this works. Prehaps they fixed it.

more than a decade ago I was trying to make a interface box that took that signal and convert into on/off for electric fans as an option. I...

It sounds like you are bothered by the difference between stock. The WOT shift point OEM are programmed to shift super short via MPH.. They basically have them waiting on the RPM qualifier to...

Perhaps its the way you are calculating it.

I'm not a fan of using the MAF to dial in VVE. Try disabling the MAF entirely and see how VVE stands by itself.

Supercharged/turbo charged watercraft have been that way for a while. Lots of boost and traditionally very lean AFR's.

I'll bet in both situations getting fuel to them would make more power.

You don't have STIT logging. Maybe I missed it.

This your fast idle airflow trim. Work on getting it to zero or slightly negative. like -0.5g.

I'll bet it is very negative right now and...

Sounds like it's got a REP type DTC going on. Make sure you scan it for codes while you have no pedal response.

This needs a lot more cranking airflow IMHO.

it also looks like VVE was roughed in but not tuned. Tuning this will make a good difference.

Have you looked on the tune repository for a stock file?

I'm fairly certain I would have one. You might have a export OS though compared to what I see here in the states.

AFR reported depends on what Stoich is assumed to be.

If this is an analog output AEM I have a spreadsheet to help find the real transfer function for your wideband as you have it installed. ...

I would try looking up VVE tuning. This looks like it hasn't had any. This will make a good difference in just about every issue you list.

Also looks lazy getting into PE and low on timing at WOT

2-3 g/cyl across the board will work on just about everything.

Maxing that table in some years causes a instant code. There are two codes 1514 and 1516. One is a tune issue.. one is a...

It could be just knock sensors. When they go bad, they get super sensitive or very quiet. Torque is important when installing new.

Another thing that might be throwing you off is no flex fuel sensor.

E85 from the pump is all over the place. 60-82ish% here. That will make a huge difference in fueling.

That tune could use some work.

Please search for VVE tuning. This setup will drive much better if that is dialed in. It isn't too hard.

The PE is targeting a very rich AFR for a NA car.
...

I modify these all the time. Typically don't zero it out. It blips a tiny bit of retard as the compressor clutch activates. If the table is setup right you won't feel a thing. If the truck...

Have you looked into the tune repository to see if you can find a stock file to compare it to?

you have to login the main site to get there.

It will have a code when it goes into this "Safety mode" use that code to diagnose the problem. ON a 2005 GTO a throttlebody/pedal code is usually not in tuning. Its mechanical.

It's been a while since I've done this. I've done a few SBCs, LT1's, and a BBC with his stuff.

He's always provided a base file with the injector bank select and firing order fixed. The way that...

Did it have fuel pressure when it had the hard start?

If so.. I'd multply the cranking airflow table by 15-20% +

I'd check fuel pressure.. Put the gauge on before you do anything else one morning.

I would use a GM sensor. I have zero faith in these aftermarket map sensors. I've seen too many bad ones personally and as a shop I get emails from china all the time offering bulk discounts on...

This has too much timing at idle. The best torque idle will be 28-31 degrees but you want to save some of that torque up for a idle dip/surge etc.. I'd recommend 18 degrees as that leaves a good...

Those injectors are pretty easy to work with IMHO. I wouldn't change them. We use them in house for smaller builds in house although you'd have a hard time maxing them out NA.


Post a log. A...