Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
dave@hennessey
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons


Reply
 
Thread Tools
Old 07-09-2009, 11:57 AM   #1
PQ
Booooosted.
 
PQ's Avatar
 
Drives: 2010 Supercharged SS
Join Date: Apr 2008
Location: Mobile, AL
Posts: 36,732
Send a message via Yahoo to PQ
irpq11, L99 Dyno results.

Ok fellas. Here are the results from my Dyno this morning.

The tuner was particularly puzzled by the fuel mixture running so rich to abnormal levels. He seemed pretty concerned. Said it may be causing HP loss.

EDIT: Turns out he was exactly right. The fuse pull solved the problem.

Name:  Dyno R1.jpg
Views: 32139
Size:  102.2 KB

Name:  Dyno R2.jpg
Views: 31458
Size:  137.2 KB

Name:  Dyno R3.jpg
Views: 30243
Size:  102.8 KB
__________________

Last edited by PQ; 05-16-2012 at 10:26 AM.
PQ is offline   Reply With Quote
Old 07-09-2009, 12:02 PM   #2
jdanza
 
jdanza's Avatar
 
Drives: 2010 2SS/RS VR-BLACK
Join Date: Apr 2009
Location: Southeast Fl
Posts: 392
Are the HP and torque #'s where they are supposed to be ?
__________________
2010 2SS/RS VICTORY RED / BLACK LEATHER - 6 SPEED M TRANS
6000 = Delivered To Customer-8/22/2009
jdanza is offline   Reply With Quote
Old 07-09-2009, 12:03 PM   #3
9c1ny
 
9c1ny's Avatar
 
Drives: C6 Zed-oh-six
Join Date: May 2009
Location: Buffalo NY
Posts: 675
seems to be pretty normal for the HP #'s
__________________
9c1ny is offline   Reply With Quote
Old 07-09-2009, 12:03 PM   #4
MTron
 
Drives: 99 Grand Prix
Join Date: Jul 2007
Location: Toronto
Posts: 334
they do seem a touch low. Could indicated a program issue.

I think the more significant thing here, is that if there is a programming issue, it could also affect the way the transmission shifts, as well as the torque management, thus further compounding the issue
MTron is offline   Reply With Quote
Old 07-09-2009, 12:03 PM   #5
GTAHVIT
Blessed
 
GTAHVIT's Avatar
 
Drives: 2013 Sonic RS MT
Join Date: Dec 2007
Location: Saint Augustine FL
Posts: 28,496
What else did he say??? was he happy with the HP numbers? Or did he think it was under powered?

I'm sure I should know this... but what should it be at the rear wheels?
GTAHVIT is offline   Reply With Quote
Old 07-09-2009, 12:07 PM   #6
PQ
Booooosted.
 
PQ's Avatar
 
Drives: 2010 Supercharged SS
Join Date: Apr 2008
Location: Mobile, AL
Posts: 36,732
Send a message via Yahoo to PQ
Quote:
Originally Posted by jdanza View Post
Are the HP and torque #'s where they are supposed to be ?
Quote:
Originally Posted by GTAHVIT View Post
What else did he say??? was he happy with the HP numbers? Or did he think it was under powered?

I'm sure I should know this... but what should it be at the rear wheels?
He said that in his opinion, this car should be losing no more than 15% from crank to wheels. He thinks the rich fuel mixture is causing a loss. In his opinion it should be getting 330 HP to the wheels. He says this car should be tighter than that.
__________________
PQ is offline   Reply With Quote
Old 07-09-2009, 12:08 PM   #7
JDBeck23

 
Drives: 2010 Camaro, 2SS/RS
Join Date: May 2009
Location: King George, Va
Posts: 881
What caused the 20 hp jump from first to third dyno pulls?

Seems low to me, I would take the first dyno run into the dealer and put up the big WTF?!
__________________

2010 2SS/RS CGM
American Racing Headers, Magnaflow axle back, Roto-Fab CAI, Audio Integrations Sub box, Alpine Type R 10, Alpine MRP-500 amp, Pro Clips iPhone Mount
JDBeck23 is offline   Reply With Quote
Old 07-09-2009, 12:08 PM   #8
Xanthos
Almost-Original Postwhore
 
Xanthos's Avatar
 
Drives: Stick
Join Date: Mar 2008
Location: Oklahoma
Posts: 12,566
They should be able 320 at the rear wheels, but that A/F ratio looks a bit weird to me as well... That could quite possibly be messing with your numbers. Of course, it could be something else as well.
- X
__________________
Xanthos is offline   Reply With Quote
Old 07-09-2009, 12:08 PM   #9
MTron
 
Drives: 99 Grand Prix
Join Date: Jul 2007
Location: Toronto
Posts: 334
actually, on further inspection, those seem very wonky...

i mean run 1, the torque and hp curves are nearly idenicel.....very strange....as well the A/F graph is messed...took a major plunge at 4.5 k rpm to 10:1....NOT normal and 200lb feet of torque at 4000 rpm...i mean....wow...not normal

run 2 you A:F is low, and your torque is taking a dive, but more normal then the first


run 3, same issues as 1, A/F dive at 4k rpm torque too low for the rpm at 4000
MTron is offline   Reply With Quote
Old 07-09-2009, 12:09 PM   #10
matt55

 
matt55's Avatar
 
Drives: CTS-V
Join Date: Aug 2008
Location: Raleigh NC
Posts: 1,061
Wow rich in the mid , I wonder if the WBO2 is off ?
__________________
11.9@119mph, 495 whp , Airaid + tune .
matt55 is offline   Reply With Quote
Old 07-09-2009, 12:10 PM   #11
ElAntonius
 
Drives: 2010 Camaro 1SS A6
Join Date: Apr 2009
Location: Tampa, FL
Posts: 140
They seem in line with the lower side of what most people are pulling in on the L99 (which seems to range about 310-330 depending on the dyno and other factors)

I wouldn't say that kind of dyno pull would be indicative of a car that is losing 1.5-2 seconds to 60.

Edit: I mean the actual HP numbers. Analysis of the A/F mixture and curves is beyond my ability.
__________________
A House Divided...
ElAntonius is offline   Reply With Quote
Old 07-09-2009, 12:11 PM   #12
1320junkie
Account Suspended
 
Drives: The Imperial Army
Join Date: Feb 2009
Location: The Darkside
Posts: 15,741
Yeah man its a tad bit off..2nd and 3rd would be acceptable but your a/f is kinda wacked...wth happened with the 1st run?
1320junkie is offline   Reply With Quote
Old 07-09-2009, 12:13 PM   #13
D1BADZ
hmmmmm
 
D1BADZ's Avatar
 
Drives: 2010 IOM in-n-out 2SS
Join Date: Oct 2008
Location: San Jose, Ca
Posts: 1,325
hmmm, interesting, thanks for posting this up
__________________
"Responsibility is a Heavy Responsibilty" (Cheech)

D1BADZ is offline   Reply With Quote
Old 07-09-2009, 12:16 PM   #14
ElAntonius
 
Drives: 2010 Camaro 1SS A6
Join Date: Apr 2009
Location: Tampa, FL
Posts: 140
Looking at the low starting torque on run 1, I wonder...

irpq, you've said that you randomly had the car 'wake up' the other day, though it seems intermittent?

I've been thinking about my theory that the car doesn't respond as well to mashing the throttle from the get-go...all my best launches have been in situations where I smoothly feed the throttle in and I've had some disappointing launches where I rammed it...is it possible that some aspect of the L99 software is limiting maximum torque from a dead stop? Perhaps some sort of break-in software?
__________________
A House Divided...
ElAntonius is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Texas Speed Long Tubes & Rumbler 5 Cat-Back Dyno Results! Trevor @ Texas Speed Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 47 09-06-2009 03:36 PM
Check your Order here bvonscott Camaro Price | Ordering | Tracking | Dealers Discussions 665 06-29-2009 01:00 PM
L99 STOCK dyno video and results pharmd Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 7 06-25-2009 10:05 AM
Dyno Results on L99? pharmd Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 23 05-12-2009 10:53 PM
BUDWEISER SHOOTOUT LINE UP CamaroScotty General Automotive + Other Cars Discussion 22 02-07-2009 07:03 PM


All times are GMT -5. The time now is 12:51 PM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.