Dynoed the car today (while the stereo was ON)!! *graph inside*

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CottonBurnerz

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#1

• Jul 24, 2004

• #1

I went to dyno the car today after putting on Steeda u/d pullies and Accufab plenum/75mm TB. After the dyno, I got in the car, start the car, then I noticed that the stereo was on, but I could barely hear it. It was playing the middle of the 12th song. I know that I was listening to song 4th or 5th when I parked the car. So, my car has dynoed while stereo was on

The question is, how much hp would that cost be by having the stereo on while dynoing?

Here's today's dyno graph:





Last time's dyno without pulleys and plenum/tb graph:





And lastly.. the graph of LT headers/catted X-pipe/cat-back VS. 4.10, alum DS, EEC reflashed + exhaust mods (same as the graph above):

 

01MineralgreyGT

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Jul 24, 2004

#2

• Jul 24, 2004

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IMO you shouldn't have any noticed loss with the stereo on

 

twogts4us

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Jul 24, 2004

#3

• Jul 24, 2004

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Stereo on while the car is on the dyno...am I missing something here? How could that cause any measurable loss?

 

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joestang98

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#4

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you must have had Foghat's-"Slow Ride" on??? that song always lowers your RWHP

 

StangFreak32

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Jul 24, 2004

#5

• Jul 24, 2004

• #5

wouldnt think that playing the radio would take away to much hp...but woulda also thought that the ud pulleys and tb and plenum woulda given ya more than just 8 hp....especially considering ive seen dyno runs after just a pulley install that showed they gave 10 hp....so would thought atleast a 15 hp gain

 

Blakers01GT

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Jul 24, 2004

#6

• Jul 24, 2004

• #6

having the stereo on won't make you lose hp, I want to see where pulley's have given someone 10RWHP, I wanna see that with a dyno run without em, then installed, then a run right after with them on. my Steeda U/D pulley's did JACK for me, all they did was slow my accessories down. I think the HP he gained was from the plenum/TB, which isn't a bad gain at all.:nice

 

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tangerine

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Jul 24, 2004

#7

• Jul 24, 2004

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LOL. I have never heard of someone loosing horsepower from having the radio on. I f you lose hp from that then you need to get your car checked out because something is majorly wrong.

 

MyEarsHurt

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#8

• Jul 24, 2004

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joestang98 said:

you must have had Foghat's-"Slow Ride" on??? that song always lowers your RWHP

Click to expand...

LMAO




I dont think that you would lose any horsepower, unless you have a system that is so loud it would make your battery drop under 12 volts of output, like 1 or 2 subs at full volume.

 

V

vidmaster

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Jul 24, 2004

#9

• Jul 24, 2004

• #9

my voltage drops when i crank mine. all the interior lights dim and flicker. I can't wait to see what happens with the UDP's haha. I guess it's time for a good battery and cap for the amp.

 

Cobra Jay

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Jul 24, 2004

#10

• Jul 24, 2004

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tangerine said:

LOL. I have never heard of someone loosing horsepower from having the radio on. I f you lose hp from that then you need to get your car checked out because something is majorly wrong.

Click to expand...

 

twogts4us

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Jul 24, 2004

#11

• Jul 24, 2004

• #11

joestang98 said:

you must have had Foghat's-"Slow Ride" on??? that song always lowers your RWHP

Click to expand...

 

C

CottonBurnerz

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Jul 24, 2004

#12

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lol heh guess you learn something everyday... how's my a/f ratio though? Isn't n/a application's ideal a/f is 13.1 or something like that?

 

twogts4us

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#13

• Jul 24, 2004

• #13

Your A/F is safe. Actually 14.7:1 is optimal, but most tuners feel safer under this number.

 

Aaron 4.6

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#14

• Jul 24, 2004

• #14

twogts4us said:

Your A/F is safe. Actually 14.7:1 is optimal, but most tuners feel safer under this number.

Click to expand...

14.7 is optimal for economy, but not necessarily optimal for making power.

There is no defined 'perfect' A/F ratio, as it will depend on the car, level of modification, and willingness to remove engine operational safety margin. Most folk find that 12.5- 13 works well for N/A applications.

 

6

68 & 00 GT

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#15

• Jul 24, 2004

• #15

nice numbers

I always turn my fan switch off just prior to running my car
want my car to have full electrical capability

 

stangmsy

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#16

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none