GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Just dynoed my car today..do I have a lemon?

Thread Tools
 
Search this Thread
 
Old Jan 31, 2007 | 02:56 AM
  #21  
thump_rrr's Avatar
 
Joined: April 12, 2005
Posts: 399
Likes: 0
Originally Posted by tifo
I wouldn't mind dynoing somewhere else, but is it bad for me to dyno the car and have them rev the crap out of it again when it's so new?
I bought mine on a Thursday and on the same Saturday my car was at the track running 13.65. There are some like me that believe that the only way to break in a car is to drive it like you stole it. My car has run a best of 12.461 N/A and is now running a full second quicker with an S/C so it doesn't seem to have hurt mine any.
As everyone else has also mentioned it seems that this person does not have much experience using a dyno.
Reply
Old Jan 31, 2007 | 03:49 AM
  #22  
metroplex's Avatar
Legacy TMS Member
 
Joined: October 2, 2006
Posts: 4,777
Likes: 16
From: Southeast Michigan
Dyno in a 1:1 trans gear ratio (4th gear for 3650) or don't bother posting the dyno results.
Also if you have an automatic, dyno it in the 1:1 trans gear ratio WITH THE TORQUE CONVERTER LOCKED, or don't bother posting the dyno results. The dyno operator doesn't understand or know how to do the latter, find another place.
Reply
Old Jan 31, 2007 | 05:34 AM
  #23  
dustindu4's Avatar
9 is not my lucky number.
 
Joined: March 12, 2004
Posts: 3,663
Likes: 1
Originally Posted by don_w
A dyno pull should always be done in a 1:1 tranny gear ratio... i.e., 4th gear. If the operator didn't know this, then I would doubt his abilities. Go somewhere else if you are really interested in finding out.
especially when they don't have A/F monitoring, which is a basic necessity
Reply
Old Jan 31, 2007 | 05:37 AM
  #24  
dustindu4's Avatar
9 is not my lucky number.
 
Joined: March 12, 2004
Posts: 3,663
Likes: 1
Originally Posted by thump_rrr
There are some like me that believe that the only way to break in a car is to drive it like you stole it.
I did a 50 foot burnout out of the dealer parking lot and have been driving it like that ever since. At 650 miles you are way past any possible break in period. The guy at the dyno shop you went to is a moron, go somewhere else
Reply
Old Jan 31, 2007 | 06:03 AM
  #25  
2L8IWON's Avatar
Team Mustang Source
 
Joined: October 17, 2004
Posts: 798
Likes: 2
tifo: I would say take the car somewhere else for a Dyno run and if the tuner is that big of an idiot get your tune looked at as well. Those numbers are low but thier gear could be off and there are adjustments that can be made for atmospherics, the guy might of screwed up the readings.

As an aside I got my car dyno tuned a year after I had my baseline run and lost 2 rwhp on the same dyno. My tuner blamed it on the E10 gas we are running here.

As far as not reving the car, come on man, it's a Stang!!! I've always been told to drive it like you are gonna drive it for the rest of it's life. I took my 03 Cobra to the track the first night I got it and hit the Rev limiter twice and the car still hit 500rwhp without a new or ported blower.

Have fun man and enjoy. vbmenu_register("postmenu_832423", true);
Reply
Old Jan 31, 2007 | 08:38 AM
  #26  
TacoBill's Avatar
 
Joined: September 23, 2004
Posts: 10,039
Likes: 5
From: SoCal
Originally Posted by tifo
... is it bad for me to dyno the car and have them rev the crap out of it again when it's so new?
I shot this video when I had around 500 miles on her.
Reply
Old Jan 31, 2007 | 09:29 AM
  #27  
classj's Avatar
Bullitt Member
 
Joined: July 18, 2006
Posts: 433
Likes: 0
At 650 miles you are way past any possible break in period.
I disagree somewhat. Every car I have ever owned is better seated at 2K miles than at 500.

The Hemi in my jeep took 2K miles or so to stop burning a tad bit of oil.
Reply
Old Jan 31, 2007 | 10:03 AM
  #28  
MTAS's Avatar
Team Mustang Source
 
Joined: January 30, 2004
Posts: 2,298
Likes: 4
From: Tampa FL
Originally Posted by tifo
I'm really disappointed after having my car dynoed today. Even though I've only had my car for two weeks and it only has 650 miles on it, I figured I get some baseline runs before my car gets modded next week.

Yes, there are some variables that I'm sure affected my runs, but still, the numbers are shockingly low considering it's a 2007 Mustang GT 5 speed manual. Yes, it's bone stock...

Here's the story:
1. I only have 650miles on my car (bought it on Jan 17th)

2. I told the guys who dynoed my car not to take it past 6000 RPMs (maybe a mistake?)

3. The guy who tested it did so in 3rd gear on the first two runs and on the third and final run he put it in 4th gear. (2nd run was the best, but the numbers are so far from the 1st and 3rd)

4. He didn't use any fans, but it was a cold day and drizzling here in southern california, so I figured the car would have made good HP.

Here are the numbers:

Run1: run conditions: 65.16 F Humidity: 53% SAE: 0.98
Max power=229.40 MaxTorque= 234.48

Run2: run conditions: 65.62 F Humidity 46% SAE: 0.98
Max Power=242.48 Max Torque=245.27

Run3: run conditions: 65.85 F Humidity: 47% SAE: 0.98
Max Power=221.45 Max Torque=219.03

What the hell! I know it's not broken in yet...is this car going to gain 25 HP when it loosens up? Do I have a lemon GT?

~Ray
Question for you - had the car been taken to redline prior to being on the dyon? I personally witnessed a dyno session where a car (an 05 S197) with several thousand miles on it had never been taken to redline The thing laid down like 250rwhp or something like that on the Mustang Dyno. The dyno operator asked the owner if he'd ever driven the car aggresively or taken it to redline in any gear. The answer was, "No". So the dyno operator got back in and took it to redline a few times and the thing laid down 280rwhp Take the car out and beat on it - you're not going to hurt it. It needs to be broken in the way you want it to run. If by some slim chance it blows up, at least it's under warranty. My car saw redline at least a dozen times the morning after I picked it up and 32K miles later she's still going strong as ever.
Reply
Old Jan 31, 2007 | 10:20 AM
  #29  
06GTwJUICE's Avatar
Mach 1 Member
 
Joined: August 25, 2006
Posts: 914
Likes: 0
Todays cars have such tight tolerances and are much more advanced than the old days. A breakin period is almost non existent. Granted you want to let the car warm up before you beat on it as all parts heat at different rates (expand etc)...

Take your car to another place in a month or so, dont worry about the numbers and dont listen to the people that say "dont post the results if you dont or didnt do such and such".. thats what the forum is for, to get advice and help which you posted for...
Reply
Old Jan 31, 2007 | 10:25 AM
  #30  
MTAS's Avatar
Team Mustang Source
 
Joined: January 30, 2004
Posts: 2,298
Likes: 4
From: Tampa FL
Thumbs up

Originally Posted by 06GTwJUICE
Todays cars have such tight tolerances and are much more advanced than the old days. A breakin period is almost non existent. Granted you want to let the car warm up before you beat on it as all parts heat at different rates (expand etc)...

Take your car to another place in a month or so, dont worry about the numbers and dont listen to the people that say "dont post the results if you dont or didnt do such and such".. thats what the forum is for, to get advice and help which you posted for...
All excellent points - I couldn't agree more When ever I take someone for a ride, and they want to see "what she'll do", I definitely let it get warm before winding out 1st, 2nd and 3rd on our little 2-lane/40MPH-zone road
Reply
Old Jan 31, 2007 | 10:26 AM
  #31  
metroplex's Avatar
Legacy TMS Member
 
Joined: October 2, 2006
Posts: 4,777
Likes: 16
From: Southeast Michigan
06GTwJuice: I didn't mean to offend anyone with my comments. I've seen some wild numbers and claims made by various people, and usually the reason is because the dyno operator was doofus and ran the car in 2nd gear or something.
Reply
Old Jan 31, 2007 | 10:31 AM
  #32  
Knight's Avatar
Needs to be more Astony
 
Joined: October 4, 2004
Posts: 8,610
Likes: 5
From: Volo, IL
since tolerances are so small on new cars its more important to take the car through all the revs and make sure you vary engine rpm right away so the rings seat properly.
Reply
Old Jan 31, 2007 | 11:17 AM
  #33  
06GTwJUICE's Avatar
Mach 1 Member
 
Joined: August 25, 2006
Posts: 914
Likes: 0
Originally Posted by metroplex
06GTwJuice: I didn't mean to offend anyone with my comments. I've seen some wild numbers and claims made by various people, and usually the reason is because the dyno operator was doofus and ran the car in 2nd gear or something.

I know..

it's text, black and white.. no emotion behind it.

I just didnt want him being discouraged from asking for advice / help ..
Reply
Old Jan 31, 2007 | 11:19 AM
  #34  
06GTwJUICE's Avatar
Mach 1 Member
 
Joined: August 25, 2006
Posts: 914
Likes: 0
Originally Posted by Knight
since tolerances are so small on new cars its more important to take the car through all the revs and make sure you vary engine rpm right away so the rings seat properly.
Again, tight tolerances...

If the pistons had that large of a gap that they needed to seat properly over the first 1000 miles, she'd be smoking like a chimney for the 1000 miles of breakin... like my old chevelle after a rebuild..
Reply
Old Jan 31, 2007 | 11:36 AM
  #35  
SuperMach1's Avatar
Bullitt Member
 
Joined: December 7, 2006
Posts: 201
Likes: 0
Originally Posted by TacoBill
I shot this video when I had around 500 miles on her.
sickk video!
Reply
Old Jan 31, 2007 | 12:46 PM
  #36  
tifo's Avatar
Thread Starter
GT Member
 
Joined: December 14, 2006
Posts: 151
Likes: 0
From: San Gabriel Valley, CA
Originally Posted by 06GTwJUICE
Todays cars have such tight tolerances and are much more advanced than the old days. A breakin period is almost non existent. Granted you want to let the car warm up before you beat on it as all parts heat at different rates (expand etc)...

Take your car to another place in a month or so, dont worry about the numbers and dont listen to the people that say "dont post the results if you dont or didnt do such and such".. thats what the forum is for, to get advice and help which you posted for...
Thanks,
I'm actually going to take it to Swanson Performance http://www.swansonperformance.com/ to get it dynoed again (thanks for the suggestion Bill). I couldn't sleep well last night because I felt like I wasted 100 bucks and the guys who dynoed my car didn't do it right. I've had my CRX dynoed and there was only a few horsepower difference between each run. These guys had a 20 HP difference and when I called last night to complain to the owner, a worker who said the owner had gone home, mentioned to me they only had the dyno less than six months. I wish I had known that before...

Either way, I need to know what my stock baseline runs are because the equipment mentioned in my signature is going on next week. Thats for all the help guys.

~Ray
Reply
Old Jan 31, 2007 | 12:53 PM
  #37  
tifo's Avatar
Thread Starter
GT Member
 
Joined: December 14, 2006
Posts: 151
Likes: 0
From: San Gabriel Valley, CA
Originally Posted by metroplex
06GTwJuice: I didn't mean to offend anyone with my comments. I've seen some wild numbers and claims made by various people, and usually the reason is because the dyno operator was doofus and ran the car in 2nd gear or something.
No worries...You didn't offend. I knew there was something wrong...you should have seen my face after I saw the numbers. I spent $35,000 dollars for 07 Mustang GT (manual) and got 221 RWHP!

I'm taking some advice here. The hammer is going to drop and I'm going to stop babying the car.

~Ray
Reply
Old Jan 31, 2007 | 01:03 PM
  #38  
TacoBill's Avatar
 
Joined: September 23, 2004
Posts: 10,039
Likes: 5
From: SoCal
Originally Posted by tifo
The hammer is going to drop and I'm going to stop babying the car.
Careful Ray, it's wet out there today! And keep a watchful eye out for the Fuzz, I don't think the 'The guys over at TMS told me to drop the hammer!' excuse will fly.
Reply
Old Jan 31, 2007 | 01:40 PM
  #39  
Knight's Avatar
Needs to be more Astony
 
Joined: October 4, 2004
Posts: 8,610
Likes: 5
From: Volo, IL
Originally Posted by 06GTwJUICE
Again, tight tolerances...

If the pistons had that large of a gap that they needed to seat properly over the first 1000 miles, she'd be smoking like a chimney for the 1000 miles of breakin... like my old chevelle after a rebuild..
yeah i was supporting what you were saying.

I was saying break it in hard cause if you go to soft the engine will be broken in wrong quickly and once its broken in wrong not much you can do to fix it.
Reply
Old Jan 31, 2007 | 01:41 PM
  #40  
metroplex's Avatar
Legacy TMS Member
 
Joined: October 2, 2006
Posts: 4,777
Likes: 16
From: Southeast Michigan
Our engine shave tighter clearances and closer tolerances than the small block Fords of yore.
Reply



All times are GMT -6. The time now is 11:00 AM.