What do stock 99-04 GT's dyno on a Dynojet.

CANTONRACER

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Jun 29, 2000

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Cuyahoga Falls, Akron & Canton, OH

Jan 25, 2008

#1

• Jan 25, 2008

• #1

SAE or STD, what did you get.

No posts with I only had X done...stock, as it came from the dealer brand new.

I have seen dozens upon dozens of 99-04 GT's dyno...I have seen as low as 210 rwhp (auto) to as high as (227 rwhp) manual.

There is a local guy claiming his car made 251 rwhp, 291 rwtq stock. I do not want to call the guy a liar and I know all about freaks, but that is way off base from what I have seen.

 

scupking

Active Member

Sep 18, 2005

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Enfield, CT

Jan 25, 2008

#2

• Jan 25, 2008

• #2

251rwhp would = around 288hp at the engine. I know I wouldn't believe it. 227rwhp = 261hp at the engine so that would be were I would expect most to dyno at.

 

LI98GTStang

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Jun 22, 2000

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L.I., NY

Jan 25, 2008

#3

• Jan 25, 2008

• #3

The owner of the mustang shop that I go to around here dyno'd his own personal new edge mustang GT with 5sp. 100% stock and told me first hand that it was 224rwhp, and has seen many new edges that dyno plus or minus a few hp.

 

MyBloodRunsBlue

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Feb 1, 2007

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Jan 25, 2008

#4

• Jan 25, 2008

• #4

uncorrected i put out 267/316 with exhaust, x pipe, sct xcal 2....SAE it was 245/290 (somewhere around there)... so i wouldn't believe a word he is saying about 251 stock

 

04GTMustang

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Feb 28, 2006

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Stafford

Jan 25, 2008

#5

• Jan 25, 2008

• #5

i think they dyno around 225. mine put down 232 with midpipe catback and intake. 250rwhp is a lot for a stock car. maybe after chip, exhaust, and intake u would get that.

 

S

SilverBullet00

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Jul 5, 2004

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Wichita, KS

Jan 25, 2008

#6

• Jan 25, 2008

• #6

How do you SAE correct your dyno numbers? Whats the diff?

 

CobraRed_96_GT

Active Member

May 20, 2006

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UCSD/La Jolla

Jan 25, 2008

#7

• Jan 25, 2008

• #7

scupking said:

251rwhp would = around 288hp at the engine. I know I wouldn't believe it. 227rwhp = 261hp at the engine so that would be were I would expect most to dyno at.

Click to expand...

actually 251 would mean 295 at the crank since it's 251/.85 (for 15% drivetrain loss). The guy with stage 1 cams and an auto and some bolt ons put out 251rwhp here - some im thinking that's off, lol

 

XtorT'r

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Jun 11, 2003

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Minnesota, YAAA

Jan 25, 2008

#8

• Jan 25, 2008

• #8

Stock mine did 232.

 

04GTMustang

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Feb 28, 2006

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Stafford

Jan 25, 2008

#9

• Jan 25, 2008

• #9

XtorT'r said:

Stock mine did 232.

Click to expand...

now ur making me feel bad lol. well ill defend myself by saying i had an exhaust leak which i did at the time lol.

but i think to correct for sae you need to have the conditions at the time of dyno like temp and all. i could be wrong though.

 

J

justinschmidt1

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Jun 15, 2005

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Jan 25, 2008

#10

• Jan 25, 2008

• #10

Differant dynos make a differance too..and the weather.

Ive heard 220-230 for 5 speed and 210-215 for auto

 

S

spederman

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Apr 13, 2005

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Jan 25, 2008

#11

• Jan 25, 2008

• #11

CANTONRACER said:

There is a local guy claiming his car made 251 rwhp, 291 rwtq stock. I do not want to call the guy a liar and I know all about freaks, but that is way off base from what I have seen.

Click to expand...

I think it would be pretty safe to call him a liar. no way, there's no such thing as factory freaks imho. either the dyno was a pos and not calibrated, or he's just an effin liar. I've seen a ton of totally stock gt's 5 spds and they are always b/w 220-230rwhp

 

XtorT'r

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Jun 11, 2003

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Minnesota, YAAA

Jan 25, 2008

#12

• Jan 25, 2008

• #12

04GTMustang said:

now ur making me feel bad lol. well ill defend myself by saying i had an exhaust leak which i did at the time lol.

but i think to correct for sae you need to have the conditions at the time of dyno like temp and all. i could be wrong though.

Click to expand...

Keep in mind you kept cat's on when you put the Xpipe on your car. And 7hp isn't that far off. That leaves a lot of room for things like different oil, condition of the spark plugs or gap, weight of the rims and tires as I doubt we had the same ones when our cars were on the dyno, ect.

I am told that most dyno's will calibrate for altitude, humidity, and temp. I have also heard from people in my area that the good dynojets get about the same numbers as the Mustang dyno's we have in our area.

 

myponyrocks

I have more billet on the Stang than most women ha

Apr 18, 2004

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Jan 25, 2008

#13

• Jan 25, 2008

• #13

Diablo, Catted ProChamber, Weld-in Flowmaster 40s, Steeda Underdrive pullies, K&N and CDC Shaker it put down 251/290

Swapped in the KarKraft Shaker, C&L Pipe, and BBK Shorties
and it's 265/306

I need to hit the dyno again because I fixed a few exhaust leaks and retuned.

 

ADRENLN

Active Member

Apr 16, 2003

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NJ

Jan 25, 2008

#14

• Jan 25, 2008

• #14

220-235 max thats all there is to it

 

02LaserRed2V

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Jul 30, 2004

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Augusta, GA

Jan 25, 2008

#15

• Jan 25, 2008

• #15

Mine put down 205rwhp/238rwtq through an auto.

 

hotmustang331

Active Member

Apr 29, 2004

2,967

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Bastrop,TX

Jan 25, 2008

#16

• Jan 25, 2008

• #16

If its 35*s outside and the dyno gragh was uncorrected...I can see it happening. Tell the guy to go back and get his numbers converted to SAE like the rest of us use and see what happens. He doesnt have to dyno again....just pull the file and convert.
I assure you that its not REALLY making that much....not a chance.