ESS Centrifugal Mustang Superchargers

[SheepDog]

@Pistol_91 , looks like the best I can do is take screenshots of the logs. Forum won't let me upload the log file.

at 6500 RPM, Im at 87 Microseconds (MAF Period)

At 7900 RPM just before I let off, Im at 83 Microseconds (MAF Period)

I did scope my exhaust last night to confirm that this was not a result of a clogged or damaged Cat.

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[SheepDog]

It might be that it just can't compress and move any more air. Let's see what will happen with the same pulley setup and new head unit.

Edit: you happy now?

Am I happy now?

Not sure what you are implying, but yeah, I will absolutely run again on the dyno when I get the G3R back. The math indicates that the G3X should not be out of airflow/compressor, but the thin air doesn't play nice when trying to figure these things out.

 

[illtal]

Am I happy now?

Not sure what you are implying, but yeah, I will absolutely run again on the dyno when I get the G3R back. The math indicates that the G3X should not be out of airflow/compressor, but the thin air doesn't play nice when trying to figure these things out.

Don't take Internet banter seriously. I'm just ribbing. My phone put in it the quote.

 

[GR1MxREAPER]

@Pistol_91 , looks like the best I can do is take screenshots of the logs. Forum won't let me upload the log file.

at 6500 RPM, Im at 87 Microseconds (MAF Period)

At 7900 RPM just before I let off, Im at 83 Microseconds (MAF Period)

I did scope my exhaust last night to confirm that this was not a result of a clogged or damaged Cat.

Im sure they arnt.. but are your cats holding you back? Even high flow cats have to struggle to make power at 800+rwhp in your crazy high altitude. Would be very interesting if someone had a set of Catless connection pipes for you to try on the dyno just to see if it helps at all or just to see the power increase lol.. Not a lot of testing of many things at 6000-7000+ altitude. Would be very interesting.

 

[SheepDog]

Im sure they arnt.. but are your cats holding you back? Even high flow cats have to struggle to make power at 800+rwhp in your crazy high altitude. Would be very interesting if someone had a set of Catless connection pipes for you to try on the dyno just to see if it helps at all or just to see the power increase lol.. Not a lot of testing of many things at 6000-7000+ altitude. Would be very interesting.

Could be I guess. I do have the catless "transition tubes" as Stainless Works likes to call them.

I sent my head unit off to ESS today for the G3R conversion. If the problem is exacerbated the next time I hit the Dyno, I will know that the problem wasn't the blower, and can try the cat deletes. Either way, The G3R makes sense to me, in that it should be able to move more air with the same pulley on it, which will be beneficial at this altitude. Especially when I go up to 8 or 9000 feet+ to carve up some mountain roads.

 

[SheepDog]

800+rwhp in your crazy high altitude.

Considering that Im really only making 700 wheel up here, I didn't think this would be my limitation but it is possible

 

[GR1MxREAPER]

Considering that Im really only making 700 wheel up here, I didn't think this would be my limitation but it is possible

Yeah I suppose you’re losing a lot cause of that altitude. The cats are still working overtime though. Keep us updated when you get the new head unit. I would be interested to see the results from no cats and if it helps at all if the new blower doesn’t fix the problem all by itself.

 

[Pistol_91]

@Pistol_91 , looks like the best I can do is take screenshots of the logs. Forum won't let me upload the log file.

at 6500 RPM, Im at 87 Microseconds (MAF Period)

At 7900 RPM just before I let off, Im at 83 Microseconds (MAF Period)

I did scope my exhaust last night to confirm that this was not a result of a clogged or damaged Cat.

The MAF period seems high to me for that type of power/MAF airflow/air load but could be because of the altitude you're at. It does show it's pulling 1.6 degrees in that 2nd screenshot you posted. Other than that, has to be altitude. I think the air load its reporting is on par with the power it put down. Is this the same tune as before with your old dyno sheet? The dyno curve doesn't look normal at all...


Would belt slip or wheel spin on the dyno be possible?

 

[cbrtrx]

Looks like the g3x is out of steam, let's see what the g3r will do.

You can see if it's clutch slip by looking at your rpm vs mph.

 

[SheepDog]

The MAF period seems high to me for that type of power/MAF airflow/air load but could be because of the altitude you're at. It does show it's pulling 1.6 degrees in that 2nd screenshot you posted. Other than that, has to be altitude. I think the air load its reporting is on par with the power it put down. Is this the same tune as before with your old dyno sheet? The dyno curve doesn't look normal at all...


Would belt slip or wheel spin on the dyno be possible?

I thought it might have been belt slip too. I did have some dust and my tensioner marks had moved so I thought maybe my belt had stretched a little. I put a new and slightly shorter belt on, ran it again, and had the exact same output, with the same dip in power past 6800 RPM. ( I did this 1 week apart - exact same result)

That pull in timing was way up at nearly 8000 RPM, but wasn't pulling any timing up to that point, and not where the power starts to fall off at 6800. I guess it could have been possible that the tires were slipping just a bit up there, but hard to imagine at nearly 160 MPH.

The tunes are not quite the same. However, the only thing that got changes were primarily fueling related changes so that I could run this DW810 brushless pump on the Stock power and ground circuit.

I too was thinking that I may be hitting some hidden limit in my tune somewhere. Like Fuel flow vs. Throttle angle, maybe load, or something else that would cause the throttle to start closing, or maybe cam angles to change. IDK.

Looks like the g3x is out of steam, let's see what the g3r will do.

You can see if it's clutch slip by looking at your rpm vs mph.

Yeah, Im kind of at that conclusion too. The G3x just can't move anymore air (this shitty thin air anyway) I went from a 105mm pulley and stock balancer, to a 95mm pulley and 10%OD balancer and only picked up a little over 2 PSI, when it should have been more like 4-5PSI gain.

 

[Pistol_91]

Logging desired air load, throttle angle, and airflow limit source would give you a dead indicator if it's hitting a limit and closing the blade.

Cam angles will affect cylinder pressure and boost at WOT if the angles differ from the previous tune.

 

[Mikepol2]

At a shop for an alignment and heard my car being driven into the service bay. Wow surprised at how pronounced the blower whine is even with the quiet gears!

 

[RiotfunK]

At a shop for an alignment and heard my car being driven into the service bay. Wow surprised at how pronounced the blower whine is even with the quiet gears!

Love that low Whheeeee sound. Its like its a secret until the Kachssssss hits when shifting.

 

[Bob Lob Law]

I love the whine/whistle of the "loud" gears at low rpm!

 

[Pistol_91]

It's definitely my favorite attribute of these blowers. Sounds so good.

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