My SuperFlow dyno numbers today - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

MJanowich · 06-09-2010, 02:26 PM

I went to EB3 Motorsports in Chantilly, VA today and got a chassis dyno on their SuperFlow dyno. Here are the best 2 pulls:

#3: 267.9 HP @ 5800 RPM
#4: 267.2 HP @ 5800 RPM

Those numbers seemed low to me even for a SuperFlow dyno. I told the guy doing the pulls (E.V., the owner) about the low octane mapping and how that was an issue for some people. The thing is, I pulled the #5 and #20 fuses last week for a full night.

So my questions are, for those of you who have had a stock L99 on a SuperFlow, what were your top HP numbers and is there something wrong with my car?

The shop owner said he usually sees a 28-30% drivetrain loss on his dyno so even at 30%, I should be pulling about 280 HP.

I'm thinking of getting my ECU flashed by the dealer with the latest software and then going back for another dyno run, but if my numbers seem reasonable, I don't want to waste my money doing that.

Thanks everyone!

Michael

ron10 · 06-09-2010, 02:44 PM

seems to me you should be getting well above 300.

caverman · 06-09-2010, 02:44 PM

WOW.....that's the lowest L99 numbers I've seen. Most are in the 320-330 range.

MJanowich · 06-09-2010, 02:54 PM

Even on a SuperFlow? I thought the 320-330 range was for a Dynojet type dyno.

I may have to PM Ted Jannetty on this since that's the dyno he uses.

HeavyD · 06-09-2010, 03:24 PM

What gear was this measured in? My pulls were about the same as your in 2 or 3rd. 4th shows the highest hp. I had 321 with a Mustang dyno. The engine should be at a higher in rpm too, @6000.

topgun1 · 06-09-2010, 03:30 PM

something is either wrong with your car, the dyno, the software, or the guy who did it. Those are extremely low numbers.

These are supposed to be RWHP and RWTQ in the 320 or so range. The drivetrain loss is for HP and TQ measured at the crank which should be right around 400 hp. Doesn't matter Superflow or Dynojet. Your #'s won't vary that significantly.

I would use another dyno.

Does your car feel slow? You should feel that difference. Was is stuck in AFM mode (on 4 cylinders)? I'm thinking it may have something to do with it.

MJanowich · 06-09-2010, 04:02 PM

The pulls were done in 4th gear. I have the print out for 2 of the pulls and they go to 6300 rpm. I listed 5800 rpm because that was peak power for the first good pull. That was his first L99 so I'm not sure if he didn't turn something off, like stability or traction control. He said he turned off traction control.

It's hard to judge how it "feels". That's too subjective. It certainly throws me back into the seat when I floor it.

JANNETTYRACING · 06-09-2010, 09:06 PM

Quote:

Originally Posted by MJanowich

I went to EB3 Motorsports in Chantilly, VA today and got a chassis dyno on their SuperFlow dyno. Here are the best 2 pulls:

#3: 267.9 HP @ 5800 RPM
#4: 267.2 HP @ 5800 RPM

Those numbers seemed low to me even for a SuperFlow dyno. I told the guy doing the pulls (E.V., the owner) about the low octane mapping and how that was an issue for some people. The thing is, I pulled the #5 and #20 fuses last week for a full night.

So my questions are, for those of you who have had a stock L99 on a SuperFlow, what were your top HP numbers and is there something wrong with my car?

The shop owner said he usually sees a 28-30% drivetrain loss on his dyno so even at 30%, I should be pulling about 280 HP.

I'm thinking of getting my ECU flashed by the dealer with the latest software and then going back for another dyno run, but if my numbers seem reasonable, I don't want to waste my money doing that.

Thanks everyone!

Michael

The absolute lowest number I have seen on an L99 is 327 on the first pull after subsequent pulls power climbed to 341 for Pulls 6-7 as I remember, There is a Thread about it on here I gained 14 HP for free.

Sounds to me like that dyno needs a calibration. Something is not right, I suggest you find another dyno and check it again, the car would have to be slower than a V6.

Ted.

thesnoopster · 06-10-2010, 10:14 AM

Those numbers cant be right.

MJanowich · 06-12-2010, 01:47 PM

The saga continues. I went to Function Tuned today in Dulles, Va for a second dyno opinion. Even though they are a Nissan performance shop, I picked this place because another forum member had his M6 dyno'ed there in April, so I had some numbers to reference. I even had a printout of his dyno that he posted here.

So, my max HP today was 281.7 rwhp, or ~14 hp more than what I pulled at EB3 Motorsports. This was on a Dyno Dynamics. The other camaro5 member's max HP was 340.2! Granted, I have an automatic but that's a huge difference.

So, clearly there is something wrong with my car. I'll be making an appointment shortly to take it to the dealer and have them check to see if I'm in "low octane" mode. Either way, I'm going to have them flash the ECU to the latest software version. Hopefully my dyno research will be enough evidence for them to do the work under warranty. Once I'm done with the dealer, I'm going back to Function Tuned for another dyno.

If anyone has any tips for how to deal with the dealer, like a TSB for the low octane issue, it would be greatly appreciated.

JANNETTYRACING · 06-12-2010, 08:13 PM

Quote:

Originally Posted by MJanowich

The saga continues. I went to Function Tuned today in Dulles, Va for a second dyno opinion. Even though they are a Nissan performance shop, I picked this place because another forum member had his M6 dyno'ed there in April, so I had some numbers to reference. I even had a printout of his dyno that he posted here.

So, my max HP today was 281.7 rwhp, or ~14 hp more than what I pulled at EB3 Motorsports. This was on a Dyno Dynamics. The other camaro5 member's max HP was 340.2! Granted, I have an automatic but that's a huge difference.

So, clearly there is something wrong with my car. I'll be making an appointment shortly to take it to the dealer and have them check to see if I'm in "low octane" mode. Either way, I'm going to have them flash the ECU to the latest software version. Hopefully my dyno research will be enough evidence for them to do the work under warranty. Once I'm done with the dealer, I'm going back to Function Tuned for another dyno.

If anyone has any tips for how to deal with the dealer, like a TSB for the low octane issue, it would be greatly appreciated.

Have you opened the hood and counted the spark plugs, are you sure that is not a V6, Just Kidding.

Sorry your car is sour, Hopefully the Dealer can find something out of whack.

340 for an LS3 is 35 shy, but yours it like 50 shy from where it should be.
Ted.

MJanowich · 06-13-2010, 03:24 PM

I just spoke with the service manager. They've had my car all day, but since it's Sunday they can't call technical assistance at corporate.

He told me that it's got the latest software version, so they can't even flash it to update it. He's also trying to tell me that since it's the automatic, that may be the normal HP compared to the LS3 dyno I gave him.

I'm giving him one more shot to call Corporate tomorrow and maybe figure something out. If that doesn't work, I'm just going to have to get it tuned.

If anyone knows of any case numbers or something from GM that I can reference, please let me know. I know some of you with the low octane mapping had GM techs look at your cars.

formare · 06-13-2010, 03:33 PM

http://www.camaro5.com/forums/showth...=1#post1979308 a thread of many members who are experiencing the same issue. Your dyno data will help that whole group.

PQ · 06-15-2010, 01:14 AM

Quote:

Originally Posted by topgun1

Was is stuck in AFM mode (on 4 cylinders)? I'm thinking it may have something to do with it.

270 HP for 4 Cylinders? That would be impressive.

Quote:

Originally Posted by MJanowich

I just spoke with the service manager. They've had my car all day, but since it's Sunday they can't call technical assistance at corporate.

He told me that it's got the latest software version, so they can't even flash it to update it. He's also trying to tell me that since it's the automatic, that may be the normal HP compared to the LS3 dyno I gave him.

No way it's a normal HP. What is your VIN#?

Quote:

Originally Posted by MJanowich

I just got a call from the dealership. He had several techs look at my car and they think it's running within spec and all my software was already up to date.

Who knew 280 rwhp was within spec for GM for a 400 bhp engine...

It isn't. When my car was in low mode, before I did the fuse pull, it still dynoed at 315 and 317. It was on a Dynojet. Have you timed your car?

It was timing my car that made me realize the 'Slow L99' problem last year. NOT the dyno, OR the way it felt.

Time it, and see what you get. I suspect you are on some bad machines.

The dealer read mine as 'Within Specs' also. They would have to LOOK at the fuel table to know. And I don't think they even can.

06-09-2010, 02:26 PM	#1
MJanowich Door ding magnet Drives: 2010 Black 2SS/RS Join Date: Nov 2009 Location: Leesburg, VA Posts: 288 View My Garage	My SuperFlow dyno numbers today I went to EB3 Motorsports in Chantilly, VA today and got a chassis dyno on their SuperFlow dyno. Here are the best 2 pulls: #3: 267.9 HP @ 5800 RPM #4: 267.2 HP @ 5800 RPM Those numbers seemed low to me even for a SuperFlow dyno. I told the guy doing the pulls (E.V., the owner) about the low octane mapping and how that was an issue for some people. The thing is, I pulled the #5 and #20 fuses last week for a full night. So my questions are, for those of you who have had a stock L99 on a SuperFlow, what were your top HP numbers and is there something wrong with my car? The shop owner said he usually sees a 28-30% drivetrain loss on his dyno so even at 30%, I should be pulling about 280 HP. I'm thinking of getting my ECU flashed by the dealer with the latest software and then going back for another dyno run, but if my numbers seem reasonable, I don't want to waste my money doing that. Thanks everyone! Michael

06-09-2010, 03:30 PM	#6
topgun1 Drives: 10 SIM 2SS/RS LS3 Join Date: May 2008 Location: Winston-Salem, NC Posts: 1,939 View My Garage	something is either wrong with your car, the dyno, the software, or the guy who did it. Those are extremely low numbers. These are supposed to be RWHP and RWTQ in the 320 or so range. The drivetrain loss is for HP and TQ measured at the crank which should be right around 400 hp. Doesn't matter Superflow or Dynojet. Your #'s won't vary that significantly. I would use another dyno. Does your car feel slow? You should feel that difference. Was is stuck in AFM mode (on 4 cylinders)? I'm thinking it may have something to do with it. __________________ 5th Gen Camaros of the Carolinas SIM, 2SS/RS LS3 5/7/11 453.9 RWHP 427.5 RWTQ VMS Stage 2.5 Comp Cams kit, Cold Air Inductions intake, ADM race scoop, DT 1 3/4" headers, Solo cats, 3" Magnaflow catback, Pypes cutouts, HP tune, H&R SuperSport springs, Eibach sways/spacers, TexasSpeed UD pulley, LSR tensioner pulley, Barton shifter, skip shift eliminator, powder-coated calipers, R1 concept rotors, StopTech pads, Granatelli wires, Lloyds mats, tint, AAC afterburner taillamps, AAC scanner/sidemarkers, SRP pedals, custom engine cover, black bowties, Ridergraphix hood spears....

06-10-2010, 10:14 AM	#9
thesnoopster Drives: '17 Fifty SS - '18 Traverse Redline Join Date: Jul 2009 Location: Northern Virginia Posts: 3,616	Those numbers cant be right. __________________ 2017 Camaro SS -"FIFTY" Mods: "93 Octane"

06-13-2010, 03:33 PM	#13
formare The Milano Drives: 2017 Firefly ShipWorks Join Date: Jun 2010 Location: Chicagoland (Crown Point, IN) Posts: 1,877 View My Garage	http://www.camaro5.com/forums/showth...=1#post1979308 a thread of many members who are experiencing the same issue. Your dyno data will help that whole group. __________________ My first Love. She was called "Miss Carriage" (still cry when I think about her) 383, Muncie 4 speed, custom linkage mated to hurst short throw shifter.

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06-09-2010, 02:54 PM	#4
MJanowich Door ding magnet Drives: 2010 Black 2SS/RS Join Date: Nov 2009 Location: Leesburg, VA Posts: 288 View My Garage	Even on a SuperFlow? I thought the 320-330 range was for a Dynojet type dyno. I may have to PM Ted Jannetty on this since that's the dyno he uses.

06-09-2010, 03:24 PM	#5
HeavyD Drives: 1SSRS RY L99 Join Date: Aug 2009 Location: Ontario Posts: 1,323	What gear was this measured in? My pulls were about the same as your in 2 or 3rd. 4th shows the highest hp. I had 321 with a Mustang dyno. The engine should be at a higher in rpm too, @6000.

06-09-2010, 04:02 PM	#7
MJanowich Door ding magnet Drives: 2010 Black 2SS/RS Join Date: Nov 2009 Location: Leesburg, VA Posts: 288 View My Garage	The pulls were done in 4th gear. I have the print out for 2 of the pulls and they go to 6300 rpm. I listed 5800 rpm because that was peak power for the first good pull. That was his first L99 so I'm not sure if he didn't turn something off, like stability or traction control. He said he turned off traction control. It's hard to judge how it "feels". That's too subjective. It certainly throws me back into the seat when I floor it.

06-12-2010, 01:47 PM	#10
MJanowich Door ding magnet Drives: 2010 Black 2SS/RS Join Date: Nov 2009 Location: Leesburg, VA Posts: 288 View My Garage	The saga continues. I went to Function Tuned today in Dulles, Va for a second dyno opinion. Even though they are a Nissan performance shop, I picked this place because another forum member had his M6 dyno'ed there in April, so I had some numbers to reference. I even had a printout of his dyno that he posted here. So, my max HP today was 281.7 rwhp, or ~14 hp more than what I pulled at EB3 Motorsports. This was on a Dyno Dynamics. The other camaro5 member's max HP was 340.2! Granted, I have an automatic but that's a huge difference. So, clearly there is something wrong with my car. I'll be making an appointment shortly to take it to the dealer and have them check to see if I'm in "low octane" mode. Either way, I'm going to have them flash the ECU to the latest software version. Hopefully my dyno research will be enough evidence for them to do the work under warranty. Once I'm done with the dealer, I'm going back to Function Tuned for another dyno. If anyone has any tips for how to deal with the dealer, like a TSB for the low octane issue, it would be greatly appreciated.

06-13-2010, 03:24 PM	#12
MJanowich Door ding magnet Drives: 2010 Black 2SS/RS Join Date: Nov 2009 Location: Leesburg, VA Posts: 288 View My Garage	I just spoke with the service manager. They've had my car all day, but since it's Sunday they can't call technical assistance at corporate. He told me that it's got the latest software version, so they can't even flash it to update it. He's also trying to tell me that since it's the automatic, that may be the normal HP compared to the LS3 dyno I gave him. I'm giving him one more shot to call Corporate tomorrow and maybe figure something out. If that doesn't work, I'm just going to have to get it tuned. If anyone knows of any case numbers or something from GM that I can reference, please let me know. I know some of you with the low octane mapping had GM techs look at your cars.