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03-29-2010, 01:52 PM
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#1 |
 Drives: c Join Date: Feb 2010
Location: c
Posts: 627
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Camaro 2010 SS, V8 dyno at 304 HP
I just dyno'd my Camaro SS AT this morning and it's only putting out 304HP.
WTF? I thought it's supposed to put out around 350HP. Anyone have an idea what might cause this dramatic loss in power? I've taken out the muffler and the sound resonator for an X pipe and new mufflers. I can't image the loss in back pressure would cause a loss of 50 HP, can it? |
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03-29-2010, 01:58 PM
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#2 |
     
Drives: 10 SIM 2SS/RS LS3 Join Date: May 2008
Location: Winston-Salem, NC
Posts: 1,939
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ouch, yes, well you should at least be putting down 325-345, and definitely seen some L99's in the 350's. Was it warm and humid? that can make some difference. Was it only one run? I'd try more runs or try a different dyno shop. If it continues to put out low #'s, you might want to take it in to the dealer see why there may be a loss in power.
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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.... |
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03-29-2010, 01:59 PM
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#3 |
 Drives: '04 Range Rover, Camaro 2SS 6MT Join Date: Oct 2009
Location: Portland, OR
Posts: 213
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that sucks
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CGM 2SS/RS 6SM . No muff.
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03-29-2010, 02:00 PM
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#4 |
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Banned
Drives: 1991 New Yorker, 69 Tbird, ABM2SSRS Join Date: May 2009
Location: BC Canada
Posts: 2,248
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Low octane fuel possibly?
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03-29-2010, 02:01 PM
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#5 |
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Drives: c Join Date: Feb 2010
Location: c
Posts: 627
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I only put 91 octane
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03-29-2010, 02:03 PM
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#6 |
 
Drives: 2020 6.2 sierra 2022 zl1 camaro Join Date: Aug 2009
Location: Chicago
Posts: 199
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TRY A FUSE PULL ON YOUR L99
http://www.camaro5.com/forums/showthread.php?t=38964 Click on it, worked for me.. let us know wat happens good luck
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03-29-2010, 02:04 PM
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#7 |
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Drives: 10 SIM 2SS/RS LS3 Join Date: May 2008
Location: Winston-Salem, NC
Posts: 1,939
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Not that it would make a big difference, but I'd go with 93 octane if you have it at a gas station near you. I know alot of stations, like BP do. and try a fuse pull.
__________________
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.... |
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03-29-2010, 02:07 PM
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#8 |
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Drives: c Join Date: Feb 2010
Location: c
Posts: 627
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Ran another dyno, only put out 310hp.
so lame |
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03-29-2010, 02:07 PM
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#9 | |
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Banned
Drives: 2003 Cobra Convertible Join Date: Feb 2009
Location: CA
Posts: 2,925
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Quote:
Post the dyno sheet. What kind of dyno was it? what was the weather? what's you're elevation? If it's a load based dyno (mustang dyno) your numbers might be inline. you can make a load based dyno spit out just about any numbers you want/dont want. if it's a dynojet, then you will want to do what some of these guys say (fuse pull etc.) |
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03-29-2010, 02:17 PM
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#10 |
  
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Fill it up at least twice with 93 octane to remove/dilute most of the 91 octane. Then do the fuse pull reset procedure and re-dyno.
How many miles on the car? The break-in should be stabilized after around 2000 miles, so I'd wait at least that long to retest. You should be looking for something over 315 hp. The 400 crank hp minus 20% drivetrain loss (with AT) is 320 RWHP.
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Black 2SS ordered 1/4/2010, received 2/19/2010
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03-29-2010, 02:21 PM
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#11 |
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Drives: c Join Date: Feb 2010
Location: c
Posts: 627
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they took the wheels off and attached it directly to the dyno
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03-29-2010, 02:23 PM
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#12 |
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Drives: c Join Date: Feb 2010
Location: c
Posts: 627
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it's at 2300 miles. only 91 octane in california
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03-29-2010, 02:24 PM
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#13 | |
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Drives: c Join Date: Feb 2010
Location: c
Posts: 627
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Video of them dyno'ing it. not a full run.
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03-29-2010, 02:25 PM
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#14 |
  
Drives: Callaway Rogue Join Date: Jul 2009
Location: W8n 4 Snow, Minnesota
Posts: 4,731
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fuse pull
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