I need help with this also

You can yes, especially if you're having a hard time building boost quickly or if you just want the brake to hold more efficiently by decreasing power.

@@scottcoleman162 ok thanks! I'm at 4 to 5 psi off the line, just Wanted to see if I could get it up a few more psi

That one was a sbe gen 3. It currently has a gen 3 that has forged pistons and rods in it.

It's pretty easy. There's a wiring harness plug in the steering column area that goes into the steering wheel. I used a multi meter to find which 2 wires went to that button. (I used the continuity tone setting) I then tied one of those wires to chassis ground and the other to the 2 step. So when the button is pushed it sends a ground to activate the 2 step.

Check that your graph is formatted correctly in the settings. It needs to have the entire range of kpa that you want to log.

@@scottcoleman162 I'll double check, I thought I set it up right thank you

In actuality it's two resistors. One is fixed value and the other is the sending unit itself, which is a variable resistor. A good rule of thumb is to use a fixed resistor value that is half the value of whatever your sending units max resistance is (or as close as possible) so in your case you'd want your fixed resistor to be around 55 ohm. This circuitry is commonly called a "voltage dividing circuit" if you visit tinker cad circuits you can build the circuit using their circuit design software (free) and try out different values of fixed resistor to get the voltage range you desire.

Sure what about it would you like to know?

I was hoping you could explain again what you typed in, so the histogram knows the difference between commanded afr vs actual afr. Thanks

Yes because you want the throttle body wide open to move as much air as possible.

Thank you, happy to help.

@@scottcoleman162 hope you share more projects , i need to build car computer computing average fuel consumption , so i need to use arduino that have inputs analogs 5 volts so i need to use this method to build this project , problem i dont need to make any modification to my fuel system i want to use wires that go to cluster harness

The short answer is yes. The 5 volt coming from the ps goes through a fixed resistor and then splits into 2 wires. 1 wire is an output for the pcm (0-5 signal) the other goes into the sending unit. The sending unit itself is a variable resistor. As its resistance changes, it changes the voltage output from the ps.

@@scottcoleman162 Is it dangerous to have 5 volts running through that sending unit wire since it goes into the fuel tank? I'm thinking about wiring up a low fuel warning light using the technique you describe. A little worried about that warning light popping on and creating an explosion. :)

@@kevinb21 most factory gauges usually take in 12v and output out 5-7 volt to the sender. Check the voltage on one to know for sure.

@@scottcoleman162 Thanks for the info. It helped get my DIY low fuel warning light going!

@@kevinb21 good to know, I haven't tried it, but you could likely also use the sending as just a ground and have a bulb that dims and brightens as the fuel level changes. There's a website called "tinkercad" that let's you design and stimulate circuits, really easy to use.

Yes I am

Correct, there should be a 0-5v signal wire for the egr that goes into your pcm. Alternatively you could use an ac sensor or fuel tank pressure sensor.

Awesome to hear!!! You're welcome.

Its home made using a 12.6" LCD screen and controller, MS3 Pro and TunerStudio ran through a very small computer.

This particular setup was in a truck that had a drum brake rear end on street drag radials. While on the foot brake building boost it'd either take over the rear brake and spin the tires or push through the front brake, so a little more power was taken out to help keep that from happening. If you have a tranny brake you can probably rip it up really nice. I've since moved on to MS3 Pro for my vehicles, which uses Tuner Studio.

I've heard of people using the fuel tank pressure sensor or ac sensor. The engine needs the map to sense manifold pressure...

@@scottcoleman162 thanks, yea that what i was thinking , fuel tank pressure sensor will be lol.. 👍🏼

Hey man is normal my was 2 decimal off i add +12 to be close to my guage …

@@XXNAYARITAXX yes sir, all of them are a little different and you just add or subtract to get as close as possible. 👍

@@scottcoleman162 oh nice thanks again , 🙏

I'm using an AEM wideband gauge that has a 0-5 volt output reference. That reference is then input into the EGR pin of the pcm, then in the scanner I can log the EGR voltage (EGR voltage is also 0-5 volt) no EGR sensor is used, just the wiring input that goes into the computer. Then you basically change the math so that the scanner displays a numerical value based off the voltage it sees on the EGR pin.

What convertor are you running? It maybe too tight for the RPM setting on your 2 step with that much timing pulled. Keep in mind when you retard the timing it pulls power out and power is a huge determination on when a convertor will stall/flash.... So there's a balance there, if you don't have enough power, the engine may not be able to get up on the converter. You don't have to shoot for a certain number, you have to find the number that works... if it's working at -5 that's where I'd start.

It has to be saved, it's been a while since I've used the software since converting to ms3 but remember that there is a particular way to save all of the charts, graphs and maths.

The button engages the two step limiter.

It's a 12.3" touch screen that I retrofit to the dashboard. It runs from a Raspberry Pi through the ms3 Pro ecu.

Yes sir! This one should handle quite a bit of power. It's too fun not to push for just a little more. I have another project car that I've put on hold for a while that I need to focus on. The old truck has proven to be an attention hog. 😂

I'm hoping to start making some content regarding tuner studio tuning including it's antilag feature it's been a DIFFICULT year to find the time to do so.

@@scottcoleman162 I understand . It would be great Content using tuner studio but it would be even greater if you do it using hp tuners since the great majority use it to tune their factory ecms either way great content keep the videos coming .

The vehicle example in this video uses a 3400 rpm stall and a disc brake rear end. If you're having a hard time holding the wheels try taking out more timing which will decrease power. If you're using a low stall it'll be more difficult

What pcm are you using?

411 for 5.3

12200411

I'd use a Base tune from sloppy mechanics you'll need it to match your map sensor (2 or 3 bar) and whatever fuel injectors you're using. I'm using MegaSquirt for this project..

Thanks for guidance. I have the 3 Bar MAP sensor from the LSA. I’ll check them. I also have a factory CTSV 6.2 flash. Would you suggest coping values over If so, which ones? I’m new to this but willing to learn and doing as needed.