Slowest....2003....Ever....Dyno Results Inside

[Y2K AG GT]

Well my car hit 1,400 miles so I figured that it would be a good time to do a baseline before I add any mods. Here are the results :shrug:


Pull 1 - 337.6 HP 351.1 TQ
Pull 2 - 331.6 HP 342.7 TQ
Pull 3 - 320.3 HP 335.2 TQ

Talk about fat: The A/F was at 10 by 4.5k on each pull :??: which leads me to believe that my first mod had better be a chip.

What do you guys think?

 

[Jman20427]

Get the AF ratio to 11.8:1 or so...dyno it again at 2,000 miles. It should bump up to around 360 RWHP

 

[Tim03cobra]

My car was running so rich that even with a 2.93 pulley and filter is still needed fuel removed. Unfortunatly i didn't get it dynoed before the pulley.:bash:

 

[cobra101]

Yeah, that's pretty low. I would say get a predator or a chip (I prefer the predator) and see what happens.

It could be something else I guess. Maybe bad cats? spark plugs? But most put down 350-360rwhp stock with silencer in.

good luck.

Me, I can not even beat my track times that I had with 50rwhp less. Mann, traction is my problem

 

[Black306]

Most people have their A/F ratios go to <10 @ ~4000RPM stock. So that isn't anything abnormal.

What were the atmospheric conditions? What type of dyno was it on? Are those #s SAE?

Either something is up with your test conditions or something is up with your car. Those numbers are not normal for a '03 Cobra.

 

[SVTlover]

I would think there might be something wrong with it. Dont take my word for it but to lose more than 50 Hp from Crank to wheels Is to much? I have seen many stock cobras pull 360 to 390 HP at the wheel. But im by far no expert. Good luck SVTlover

 

[JKD COBRA]

what kind of dyno? Its not your tune, that is perfectly normal. They are all super rich up top and they still put down 360-390rwhp so something else is wrong.

 

[Y2K AG GT]

Originally posted by Black306
Most people have their A/F ratios go to <10 @ ~4000RPM stock. So that isn't anything abnormal.

What were the atmospheric conditions? What type of dyno was it on? Are those #s SAE?

Either something is up with your test conditions or something is up with your car. Those numbers are not normal for a '03 Cobra.

I did it at Kwik Kar in Richardson, Tx. At the time of the dyno it was 66 degrees outside with 90% humidity and 65 degree dew point. These were not the best conditions.

It was done on a Dynojet Dyno and those numbers are SAE.

 

[racerat]

Post up your graph so we can see what the curves look like. Something is out of wack.

 

[BigDaddy]

I don't know, anyone who spells "Quick" with a "K", Kuite...oops I mean Quite possibly has a bad dyno!---:beer:

You Cobra has all of the go fast parts to make just as much power as anyone else. Just get it tuned. What Computer Tune # is on the inside of your passenger side door?

Please post that number on your door.

-Dan

 

[VENOMOUS03COBRA]

something sounds badly wrong. even if you had clogged cats. it wouldnt cause your #'s to be that low.

 

[Jman20427]

How hot was it there when you dynoed it..J/C?
Check your plugs as well to see anything abnormal

 

[Y2K AG GT]

Originally posted by BigDaddy
I don't know, anyone who spells "Quick" with a "K", Kuite...oops I mean Quite possibly has a bad dyno!---:beer:

You Cobra has all of the go fast parts to make just as much power as anyone else. Just get it tuned. What Computer Tune # is on the inside of your passenger side door?

Please post that number on your door.

-Dan

I believe the tune # is E252874

 

[SVTCobra2001]

Originally posted by VENOMOUS03COBRA
something sounds badly wrong. even if you had clogged cats. it wouldnt cause your #'s to be that low.

Yes it would. On my 87' I was Dynoing at 310 hp and when just one Cat clogged (front right) the HP dropped to 26x. That was just under 50 HP with just one cat being bad. I would take it to Midas or something and have them do a flow test. They used to do it for free..

Eric

 

[vetkilr]

Have a dyno sheet?

What type of dyno was it on??

 

[TorchRedCobra04]

ah man i havent had my cobra dynoed yet...now this gets me scared

 

[1/2 bent]

Which number on the door would that be?? I'm looking also and there a 4 on a little sticker. Mine are
3R3A-YB
NPEF
YDH1
307172

 

[JKD COBRA]

YDH1 is the computer code for your car.

 

[351MachOne]

Makes me scared to go get dyno'd... NAh.. not really...

 

[03_Sonic Blur]

It takes 3 to 5 k miles to loosen up the motor. With more than 10k miles, mine dyno'd 386 SAE on a superflow, humidity about 40%, temp about 77 degrees, just a k&N e-0945 filter.

The first thing to go is your, umm, is umm,...

Why can't I ever remember what I was saying?