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Discussion Starter #1
Nothing big at all.

126HP
129Torque

I have a stromung DT exhaust, ganzflo intake and a DIRTY K&N air filter.

Just thought I'd share. :)
 

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got pictures? I'm interested in seeing the dyno chart... also, what kind of dyno?
AO
 

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Yes yes, what kind of dyno did you do it on? Those numbers don't seem bad.

Graham
 

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Discussion Starter #4
It's the Cobb dyno.. I'm not real sure of what kind it was.

I don't have a picture yet of the graph yet.. I'm digital camera-less. But, I'll try to get it soon.
 

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i think cobb has a mustang dyno. could be wrong though.
 

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Thanks for sharing! I have pretty much the same setup, though I'm not sure of the condition of my K&N air filter.

At least I finally know that my car is weaker than most. But it handles great and looks great. =)


Ben
 

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Heh. Check the pic you linked to. Cobb has a Mustang Dynamometer. Not a Ford Mustang Dyno, silly.
 

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2000 Subaru Impreza RS2.5 BRP
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A few months ago, I had my car dynoed at Curry's Automotive in VA, on their Mustang AWD dyno.

Car Mods:
DIY throttle-body intake (showing ~5 HP gain @peak over fender-fed, stock box)
Stock manifolds
Random Cat
Stromung dual-tip w/midpipe
15-lb. lightened stock flywheel (ACT clutch as well)

With Stock box & removed silencers
Max Torque: 148 lb-ft.
Max Power: 145 HP

With DIY intake
Max Torque: 146 lb-ft.
Max Power: 151??? The HP was still climbing when the tester let off. It looks like it would have peaked at about 151 HP.
 

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snipes and bugbomb -

do you know what vehicle weights were used? i believe both of these dyno runs would need to use the same weight basis for a fair comparison. not flaming mind you...:)

mark
 

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horatio,
I don't believe you are reading that graph correctly. My Throttle-body cone filter had over 8 lb-ft. of torque ABOVE the stock box from 2500 to 3500 RPM (The red line [TBI] is above the blue line [stock]). The only rev-range that the stock box made better torque was from 3500-4500 RPM, and I hardly ever use that rev range. I would much rather have the extra power where it is with the cone. I have great torque cruising around town, and I have great HP when I am racing the motor from 4500-6000RPM.

skeptic,
I didn't realize that they entered vehicle weights in. Why do they need the vehicle's weight if they are strapping it down so it can't move?
 
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Duh. My bad. I was confusing myself. :run:


I think they enter the weight because a lighter object will have a harder time moving a set weight than a heavier one. But I don't understand why it matters when the car isn't moving either.
 

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you can see the vehicle weight on the posted dyno run for the s4. but, to tell you the truth, i don't know what difference it makes either. september last year, cobb was just getting their dyno set up and i was there getting street cams installed. trey asked me if he could put mine on as they were making adjustments. i noticed they always input weight of the vehicle before making a run. maybe that isn't a true factor but i got the impression it could skew the results. i wanted to ask alot more questions but trey and the mustang engineer had their hands full trying to get the dyno set up properly. i think i'll drop trey an email now and ask him what he thinks. only thing i can think of is if the dyno is a variable inertia type. i'll forward anything i find out.

mark
 

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2Point5RS said:
Nothing big at all.

126HP
129Torque

I have a stromung DT exhaust, ganzflo intake and a DIRTY K&N air filter.

Just thought I'd share. :)
I've seen this number ~125hp a few times now, and it is what I
kept getting with G-tech runs for a similarly setup car (cat-back,
CAI, K&N).

I guess we can safely assume that this is what most RSs with
these mods are going to get +/- a couple.

Stu
 

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just got a reply from trey:

Mark,

Yes, the numbers we input for vehicle weight help the dyno properly load the vehicle. It's a load-based dyno, not purely a inertia dyno. It simulates inertia. It also uses an aerodynamic profile for loading.

Ultimately, it's impossible to compare numbers from one dyno to the next. Also, Mustang dynos have the ability to compute numbers based on parasitic drivetrain losses, and other correction factors. Some shops run their dyno to estimate flywheel HP, while others use different methods for coming up with their final numbers.

Ultimately, all you can do is compare the numbers the car made stock to what you make after each modification.

Thanks,
Trey
COBB Tuning
 

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skeptik said:
Ultimately, all you can do is compare the numbers the car made stock to what you make after each modification.
That's what I thought. I am pretty sure that Curry's Mustang dyno is set up strangely for my car. 150HP at the wheels sounds off for a car with my mods. At least I got the charts showing good gains for my $40 intake.
 
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