ESS Centrifugal Mustang Superchargers

[Proshop]

cool.. looks like mine is .73-.78 @ WOT.

Thanks for the help!

No problem at all! I like it way better than looking at a spread sheet. Another thing I like to check is what my fuel pressure does during a pull especially after having fuel pumps go down with out knowing it. It is fuel lift pump pressure actual vs below it which is desired. Your WB EQ ratio banks kind of go hand in hand with fuel lift pump pressure but still always something to check.

Sponsored

 

[daSNAK3]

No problem at all! I like it way better than looking at a spread sheet. Another thing I like to check is what my fuel pressure does during a pull especially after having fuel pumps go down with out knowing it. It is fuel lift pump pressure actual vs below it which is desired. Your WB EQ ratio banks kind of go hand in hand with fuel lift pump pressure but still always something to check.

I don’t see fuel lift pump pressure…

 

[Proshop]

I don’t see fuel lift pump pressure…

Interesting… you do have some channels on there that I don’t have also.

 

[Ruiner46]

Sorry, I didn't elaborate on LOL WUT's log because I thought Wengerd was about to reply and set everything straight. For the record, I'm not a tuner, but I did tune my own car by modifying a Whipple tune. What I write below could be wrong, but this is how I have assumed that things work by looking at a lot of logs over the last few years.

LAMBSE is basically the current target lambda for the ECU. It is not the same as the target lambda for WOT which is contained in a table in the tune. LAMBSE will adjust dynamically based on the feedback the ECU gets from the O2 sensors. For instance, at WOT, if the O2 sensors read leaner than the target lambda table, the LAMBSE will go rich to try and correct the current AFR. This can also be seen by watching the short term fuel trims. They will basically match the response of the LAMBSE because the ECU is trying to adjust the fuel using the STFT's.

Looking at the CSV log in the area just before full throttle, we can see the ECU transition to trying to achieve its target lambda. See this screenshot:

Green is throttle. Orange is LAMBSE. Yellow are the O2 sensors AFR1 and AFR2. Blue is the short term trims. At 43% throttle, we see the ECU start anticipating full throttle and the LAMBSE goes to 0.791. This is probably pretty close to the target lambda for full throttle.. something around 0.8. Keep in mind this is a real car where things take time to happen, so everything isn't instantaneous. As fuel starts to flow, we see the O2 AFR's start to go much richer than 0.8. AFR dips down to 0.71. The ECU thinks this is too rich, so the LAMBSE starts to climb and the short term trims start dropping . A short term trim of 0.859 at the bottom of the chart means that the ECU is trying to pull out 14.1% fuel because that is what it thinks it needs to hit its target lambda.

At the end of the full throttle run (not shown in screenshot), the O2's are reporting 0.77-0.78, so the trims did their job and got the fuel leaned out to the point where it is near the target lambda for full throttle. I can't tell you what that target is without seeing the actual tune file. Now this is all pretty safe as you can see by the happy knock sensors. However, to me, this is sloppy tuning. It looks like the numbers used for fuel flow are not accurate. The ECU doesn't have a good fuel model for injectors and pump, so it is relying on the feedback from O2's and trims to correct the fueling. This will happen on every run... it will start off rich, and lean out to hit the target. Also notice that long term fuel trims are stuck at 1, so they are disabled. This means that the ECU will never learn from its mistakes and it will always have to correct everything in real time.

Some tuners are all good with this kind of log. It is safe, so good enough. I would personally prefer that more work is done to get things closer instead of relying on bandaids in the ECU to correct everything. Even at the end of the run, short terms are still pulling more than 10% fuel, so the slopes and breakpoints in the tune for fuel flow are not really on target.

 

[Wengerd Performance]

Looking over your full log you are not lean and as someonehas already said you were looking at the ECU commanded lambda and not measured Lambda

 

[LOL WUT]

@Ruiner46 great explanation! Really appreciate you taking the time to help educate!

@Wengerd Performance appreciate your input!

 

[cbrtrx]

@Ruiner46 great explanation! Really appreciate you taking the time to help educate!

@Wengerd Performance appreciate your input!

Who tuned your car again?

 

[LOL WUT]

Who tuned your car again?

Lund

 

[cbrtrx]

Lund

Who at Lund said that was acceptable?

 

[LOL WUT]

Who at Lund said that was acceptable?

All the email exchanges are signed “Lund Calibrator Alex”. Whom I can only assume is everyone’s favorite YouTuber.

 

[larr12]

All the email exchanges are signed “Lund Calibrator Alex”. Whom I can only assume is everyone’s favorite YouTuber.

Hahaha oh shit here we go.

But Im glad everything is fine with the tune.

 

[daSNAK3]

This may not be the correct place for this question, but I’ll lay it out there. Since my ESS install the car has run absolutely phenomenal, tune was great and car runs very strong.

what is really strange is that cold starts fire right up and are completely normal, but starts after the car has warmed up seem off. I may need to record it to get the full effect but essentially the engine fires up almost without even cranking over and it almost sounds like there is a quick knock as well. It’s very strange. As soon as it is running it all is smooth and runs great.

I just have no clue what could cause this.

Post a video when you can.

 

[Brevin@ESS]

Congrats to Courtney this weekend at SCT women’s class. New PB in her 10r80 mustang! ESS G3X supercharger and still stock engine and transmission! Incredible results. Trap speed is enough for mid 8’s once the 1/8th mile is dialed in. Still plenty left in it. And a few pulley sizes yet to go.

This is just a sneak peak at what these blowers are capable of. And they’re just getting started. A $5900 off the shelf supercharger kit with those results is tough to argue against!

 

[RoGCobraRV]

Closest dyno is Tuners Inc in Orange Park. Will have to see if can get in soon. Out of mod $. Bought Corsa Active AB to go with Aceletec Resonated X pipe. Car is just to raspy with boost..

Must be in the Jax area as am I? Who did your install? I thought I read you had a shop install it. If so,how much did they charge? How does it work as far as an outside (wengerd) tuner. The shop flashes base tune upon completion I'm guessing. Then you get it home and do the revision process etc.

 

[gameovergt]

Must be in the Jax area as am I? Who did your install? I thought I read you had a shop install it. If so,how much did they charge? How does it work as far as an outside (wengerd) tuner. The shop flashes base tune upon completion I'm guessing. Then you get it home and do the revision process etc.

Message sent.

Sponsored