June 2009 DSPORT Mag

[viper117630]

We already know this but thought it was a good read. Interesting what they thought about the stock dyno numbers though. Is that the normal dyno numbers for a stock speed3?

"On its maiden run on MD Automotive's Dynojet dynamometer, the MAZDASPEED3 laid down 241.22 horsepower and 269.94 lb-ft of torque to the wheels. According to Mazda, the MAZDASPEED3 is rated at 263 horsepower and 280 lb-ft of torque. Either the MAZDASPEED3 has extremely low driveline loss (8 percent) or Mazda has significantly underrated the power output of the engine. Since we've never seen a driveline that efficient, it's many times more likely that the MAZDASPEED3's engine actually produces closer to 284 horsepower at the flywheel in stock form. "


http://www.dragsport.com/issue/2009/0609_tech.shtml

 

[oaklandopen]

i found it weird when i did my dyno run (stock with drop-in k&n air filter) and was getting like 250-255hp. ppl thought it was great (most had no idea what the numbers were) but were dumbfounded when i told them the engine output was 263hp.

 

[jwiist]

What were the final numbers after the tbe install and dyno?

 

[turbodcee]

(shrug) i was wondering the same. Do you have to subscribe to get the results?

 

[gtlaw]

I must have the most efficent drivetrain in existence 0% loss. stock I did 263 corrected hp on a mustang dyno

http://www.youtube.com/watch?v=Cca2R2h3Ap0&eurl=http%3A%2F%2Fwww%2Emazdas247%2Ecom%2Fforum%2Fshowthread%2Ephp%3Ft%3D123727803%26page%3D16&feature=player_embedded

 

[viper117630]

I have the actual magazine laying around here somewhere. I know this is step one of a two step process. They are coming back to add more parts and review.

 

[turbodcee]

I must have the most efficent drivetrain in existence 0% loss. stock I did 263 corrected hp on a mustang dyno

http://www.youtube.com/watch?v=Cca2...p?t=123727803&page=16&feature=player_embedded

I dont believe all dynos are not created equal and therefore will not produce the same results

 

[6SpeedTA95]

I dont believe all dynos are not created equal and therefore will not produce the same results

Thats correct, I can't remember the different dyno mfg's but it seems mustangs read higher if I remember right (could be wrong its been awhile) but I can remember dynoing my buddies car (7 years ago now) and on one dyno it pulled 224hp and then the next week 238hp (different dyno similar air conditions), guys at the shop said its not uncommon for there to be 4 to 6 and in some cases 7 or 8% differences between dynos.

 

[RC08MS3]

mustang dynos always read lower than everyone else. Everyone else corrects HP for different factors, but a true mustang dyno wont.

 

[viper117630]

I am thinking about taking mine to Agile Auto here in Maryland for a dyno. They use the dynapack which is supposed to be much more accurate since its hub power. It eliminates the inconstancies of tie downs and the wheels on the rollers.

 

[6SpeedTA95]

mustang dynos always read lower than everyone else. Everyone else corrects HP for different factors, but a true mustang dyno wont.

You're correct, I called my buddy and asked him if his car dyno'd higher on the mustang dyno or the dynojet, he said it dynod higher on the dynojet. He also went on to say "remember Jason and his Z28? his was the same way, everyone dyno'd less on the mustang dyno"

Sorry its been awhile :hs:

 

[HOBDisease]

Ms3 ftw, enough said...

 

[RC08MS3]

You're correct, I called my buddy and asked him if his car dyno'd higher on the mustang dyno or the dynojet, he said it dynod higher on the dynojet. He also went on to say "remember Jason and his Z28? his was the same way, everyone dyno'd less on the mustang dyno"

Sorry its been awhile :hs:

o its all good dude, its not always the easiest to keep up wit what dyno does what, i think its kinda ridiculous there is more than one to be honest. its got to the point were a dyno really means nothing, because they are all different.

 

[viper117630]

What were the final numbers after the tbe install and dyno?

(shrug) i was wondering the same. Do you have to subscribe to get the results?

Dug up my mag and got the results. They did a dyno after each mod.

Baseline: 241WHP 266TQ
Test 1: CPE 3 inch exhaust- 244WHP 270TQ
Test 2: CPE CAI- 253WHP 290TQ
Test 3: CPE DP- 273WHP 294TQ

 

[RC08MS3]

hm... so the CBE does gain HP..... just not much

 

[viper117630]

hm... so the CBE does gain HP..... just not much

Yeah, i wouldn't expect any kind of serious benefit other than sound unless you have some serious mods.

 

[derspi]

hm... so the CBE does gain HP..... just not much

And I gather most of that small gain was achieved by dumping the 2nd cat or does the CPE downpipe eliminate both cats at the same time?

 

[RC08MS3]

ehh yea, but at the same time it does show you get something, and you may only get 4 peak HP, but i mean i didnt see the dyno graph to show what the overall gain was. You may see a more broad power band, and i no for me it wasent only for the power, the sound and also no droan factor got my buy, my stock was horrible for highway droan.

Cats are all in the DP

 

[coololddude]

I never use dynos, I'd much rather Lie about the Horsepower and Torque!

 

[Sport6]

I never use dynos, I'd much rather Lie about the Horsepower and Torque!

Thats the way true racers do it