Outstanding! Best instructional videos on HP Tuners ever. Thank you

@ChopperDoc181

4 жыл бұрын

Glad it was helpful!

awesome video, very informative, it helped me alot... now i'm looking into tuning the spark tables... is it possible you could make a video?

@ChopperDoc181

3 жыл бұрын

Spark is tricky for street tuning. I generally tune out knock as I’m going and reduce and smooth those areas. As for trying to maximize potential, a good race logger or an actual track can substitute for a dyno. Beyond that, look into my boost tune setup guide as to what areas to watch out for. It gives you an idea where you’ll have trouble if you push too hard.

thanks

Not sure if you're still here. I saw a question on another video that I don't remember seeing on the forums. Could a resistor be reliably placed inline with maf output to scale down the output instead of scaling the entire tune?

@ChopperDoc181

Жыл бұрын

That’s a very clever idea, I just don’t know if I’d fully trust it.

Can you tell me here or maybe make an addition to your Ve video and explain how to graph/log the VE table using STFT? I'm assuming instead of AFR Error the same stft is used just like it is in this video for MAF tuning.

@ChopperDoc181

4 жыл бұрын

I apologize for the late reply... Been on vacation with the family. All you have to do is go to >Engine>Fuel>Oxygen Sensors>Closed Loop Enable... and set back to stock values. From there, in the scanner, use STFT's as the "error" plot instead of the wideband. There is a PID available to use both banks, might have to scroll to look for it. Just type STFT into the search bar and the options should all be there as to what to plot. Remember though, this WILL NOT work in power enrichment. So if you are on the throttle hard, when things are most likely to break, then you will have NO clue what is going on with your fuel. When entering PE, the last STFT that was logged is basically what the PCM goes off of from there on up. If it's lean, then that's even worse. It is highly recommended to use a wideband for tuning fuel tables. Trust me it's worth the extra $150.

@SINSTER7THREE

4 жыл бұрын

When you change the eq ratio to 1.0 above 140 degrees . How do you know what to change eq ratio back to after maf/ve tuning is complete?

@SINSTER7THREE

4 жыл бұрын

Nevermine back to stock settings,

Did you make a video on Gen 3 spark and timing tuning? I don't see it on your channel, could you drop a link if so?

So even if I am going to tune a maf only wot ol tune I still need to tune the ve table first ?I am confused and If I am tuning on open loop whenever I finish collbrating the maf why do I renable the oxy sensors and dfco..etc shouldn't I leave it disabled since I am doing a maf tune in open loop isn't this going to mess everything up and make my tuning useless since close loop will be renabled???

@ChopperDoc181

3 жыл бұрын

Some folks do run MAF only setups. As for your other questions, MAF is tuned in open loop using a wide band, just like VE. Don’t turn on any adders, leave it just like the VE tune setup. Only difference is the table you are adjusting, and one other setting under dynamic airflow. You want to set your high RPM disable for dynamic air down to 1 RPM so the PCM will always use the MAF as the airmass model. Normally it’s recommend to also tune the VE to have a complete and proper tune. However it is possible to skip this as there are a lot of ways to setup a tune and many possible combinations out there.

@hassanabas1549

3 жыл бұрын

Thanks came a long way since then pretty much got the idea I have another couple question about tuning for best fuel mpg should I use stft ,ltft to do such a tune or is it better with a wide band and what does actually need tuning for best mpg beside the maf ,ve tables do I need to tune for example timing ,pe, if you could give me the basic of this to start with I already know how to log and tune but I don't know how to go about such a tune do I need to disable something before doing a tune like this for example do I need to reduce timing ,maybe do something in power enrichment ...etc I have no idea about this the only thing I know it's about tuning the maf and ve tables so I would like you to write me some steps for this to set me at the right direction

At 4:35 you set the open loop eq ratio to 1.0 across the high end of the table. Isn’t that too lean for WOT tuning? Why not set the eq ratio to 1.18 (12.5 AFR) across the board and verify with your Wide band?

@ChopperDoc181

2 жыл бұрын

Because PE is for WOT. If you do it it on that table, it could command 12.5 all the time outside of WOT. It’s not necessary. Set up your PE triggers appropriately and you will command 12.5 under high load. The idea behind “1’ing” out this table is so you remove another adder from the list of adders modifying your commanded so you can get a more accurate airflow baseline. The only adder you should be using for WOT is PE.

I have a cammed ls1 that at 7200 hz it’s falling in it’s face. I put a 100mm housing and ls7 maf in it. I’m having issues idling under 1k. Could my placement be the issue?

@ChopperDoc181

3 жыл бұрын

Placement is always a consideration. You can try a different clock position. Normally MAF functions best under high flow. Is it having the same issue when you put it in speed density?

@cdracing5617

3 жыл бұрын

@@ChopperDoc181 no, I gave up trying to tune it myself cause I think I bit off more then I can chew. But the guy I sent it too says it runs good in speed density but is still not wanting to idle under 1k and can’t do wot pulls

@ChopperDoc181

3 жыл бұрын

It may need to be scaled, not sure. I don’t know your setup and can’t see the log, so best I can do is guess. Sorry for not being a better help there.

In my HP Tuner program on the VCM Editor Engine Diag page I can only see DTC's, it isn't giving me the options for Airflow etc. Am I doing something wrong? I just need to set my MAF Fail Freq to 0 so I can disable. I have a Holley Terminator X Max system integrated which runs speed density only. Somehow the MAF is interfering with the engine running at higher RPM AFR goes crazy cyclical

@ChopperDoc181

4 жыл бұрын

I'd give Holley customer service a call on this one. I can't be of much help here unfortunately, since I have no experience with that operating system or PCM. You're using HPT to tune it I assume?

@donsalisbury5578

4 жыл бұрын

@@ChopperDoc181 Thanks for the reply - It's not the Holley ECU I'm programming with the HP Tuner, it's the OEM PCM that still controls the MAF. Just need to access that MAF Fail Freq and adjust to "0"

@ChopperDoc181

4 жыл бұрын

That’s pretty strange that you don’t have the other tabs. Here’s a few things you can try though... obviously unplug the MAF itself, if it’s plugged in. That will fail it for sure lol. Second, go to your dynamic airflow tab (under airflow) and set it to the max RPM for dynamic airflow disable. I think I cover that in the guide here, except you’ll be going the other direction obviously. Stock is usually 3k or 4k RPM. That should prevent the MAF from making airflow calcs, hopefully.

@ChopperDoc181

4 жыл бұрын

The dynamic airflow High RPM disable I’m talking about is at 4:00 in the video. Set that bad boy to 9999 or something your engine will never see. Like I said, hopefully that works.

@donsalisbury5578

4 жыл бұрын

@@ChopperDoc181 Thank you so much for the reply..I did try unplugging the MAF and the car shut off? Not sure why. So that I'm clear the car is running during these changes and not running when I write the program? Also, should the engine be running to see these tabs I'm not seeing on the VCM Editor page under engine diag?

You copy high octane to low octane table after you disable the MAF to tune VE. Don’t you re-enable the low octane table when done tuning?

@ChopperDoc181

4 жыл бұрын

Yes, though if you do not have anything on the knock learn factor, the low octane table isn't necessarily needed. It exists as a safety net for running low octane fuels. If your setup is a daily driver, and you require the table, yes, you re-enable it just like normal. If you have prolonged knock that drives the number towards the LO table when you are using your desired fuel, then obviously fixing that is priority.

This is the first time I've ever seen ve tuning suggested being done before MAF tuning 🤔. What's the reasoning behind this exactly?

@ChopperDoc181

3 жыл бұрын

Because the Gen III PCM is MAF based, meaning that if the MAF is enabled in anyway it will affect your SD tune. That’s why a lot of guys also unplug it when tuning SD. So it makes sense to tune SD first, then MAF, then spark. It was the way that always worked in the past, and the way I still do it. On later generations you can’t fully disable the MAF, however newer generations also don’t have SD tables either. Just lots and lots of complicated formulas. That’s why there is an editor for that now. It used to be a standalone program for that made by Bluecat. HPT has since essentially added this program into the editor. But yeah, lots of old tutorials will show the way I’m showing. It’s how I learned, so it’s how I teach it.

@boosted0079

3 жыл бұрын

@@ChopperDoc181 I really love the detail you go into on these processes. I do have a few questions for you though if you don't mind. I'm starting to tune a GM 3800 series 2 V6 that I've built and done a supercharged top swap to. Nothing to crazy. Very mild cam that's almost stock. My question is there's no real way to disable dfco on these PCMs. It's a P04 PCM. This Gen 3 stuff is really close, and it's what I was told to follow for tuning procedures. I do have a wideband and HP tuners with pro features. What's the best way around thed dfco issue since I can't disable that? Is bumping up the cell counts the best way to try and keep most of the lean conditions from deceleration from skewing the data?

@ChopperDoc181

3 жыл бұрын

No just don’t tune that area. It won’t matter if you can’t turn off DFCO.

cold u drop ur email so that i can ask u a few things i have everything set up like u said my buddy has me set up to tune maf diff from what u have i can email u the logs of ur way and his and tell me witch i should go with his is not making sense to me i have a aem 30-300 wideband i think how wideband is set up in channels is whats throwing me off he says i have to log in lamda then i can just copy paste by half percent he said if i leave it in 14.7 ill have to do math? but if i switch to lamda then ur graph dont show any data ?so i guess i just need u to look at my two diff channel setups and tell me witch is right to tune my maf on my gen 3 p59 ecu would mean alot to me if u could help me with this lil problem thank u i have facebook also if thats more easy i can send screenn shots too

@ChopperDoc181

Жыл бұрын

You can simply change the histogram to log lambda and use that as a correction. When setting up the graph just use lambda instead of AFR. The end result is the same.

@haroldpowell

Жыл бұрын

@@ChopperDoc181 ok thank u