2.3 MTX Hatch Dyno Dynamics 3rd Gear Pulls - Updated 12/16/07 - Mazda3 Forums : The #1 Mazda 3 Forum


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Old 09-10-2006, 11:46 PM   #1
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Default 2.3 MTX Hatch Dyno Dynamics 3rd Gear Pulls - Updated 12/16/07

Dyno Session I - 9/9/2006
Stock Baseline

So before I start doing heavy modifications to the car I wanted to go ahead and get my first (near) base dyno done. Lucky me there is a load dyno here right here in Tampa (http://www.ellisautoworkZ.com) that also probably has the best price in town for 3 pulls. The tech I meet up with was Bryant Tonkin who was real cool guy and very willing to make sure I was happy with the runs. The great thing about the load dynos like the dyno dynamic systems are that they are more accurate than say jet dynos which are more prevalent. I've heard/read that jet dynos read anywhere from 10-15% higher which seemed kind of high to me but after seeing my results I think that 10% is probably dead on. BTW does any know of a good place to get a vacuum reading? Bryant tried searching for one for a few moments but didn't find one. Anyways here are the pics, some vids, and the results. Enjoy!


Only performance mods are the Buddy Club Condenser and AIT mod. Tires have about 32psi in them (nitrogen). Less than 11,000 miles. ~90 degree weather.









Vids...

http://www.groovesubstation.com/pers...Dyno%20008.wmv
http://www.groovesubstation.com/pers...Dyno%20010.wmv


Graphs...






Final results are ~126whp, and ~123tq so that would probably read about ~138.6whp and ~135.3tq on a dyno jet so overall I'm really happy with the results as they seem to right on par with what we should be seeing and the numbers were very consistent. What really makes me happy is that we are able to get a look at the low-end numbers, something which we really don't have a lot of info on as many people start at 2500 or higher on their graphs. As a side note, the first actual run we did was in 4th gear ( I totally forgot to make that clear to Bryant but he soon enough found out why!) and we were able to pull a max hp of 123whp before the car cut the fuel. Figure someone might find that interested/useful to know.

I also wanted to test 87 vs. 89 octane fuel since I’ve done the AIT mod and Bean is the only one I believe who has actually tried to test if there is any gain to be had by upping the octane with the advanced timings. However Beans car was moderately modified so I figured that perhaps it may not have the same effect on a more stock vehicle. I did my best to keep my tank low prior to the dyno so that way after I had gotten two good pulls I could put in the 89 and do a run to see if there was any gain. Unfortunately I probably still had over 2 gallons left in the tank, and I only brought a little over 4 gallons of 89 with me so its not exactly the best test since the 89 would obviously be diluted to a rather significant amount. There was a .5hp increase in the max whp of the pulls but that could be accounted by just variance in the dyno or the car itself. Next time I'll probably bring 93 oct fuel so that way if there still a few gallons of 87 left it won't be so diluted and we could more easily see if there’s a real gain or not. Anyways I'm definitely looking forward to being a repeat customer at Ellis AutoworkZ and recommend them to others in the area (especially you Wiz since I think we need to have a dyno shootout :P ). My next dyno I plan on actually verifying (fuck theories, lets see numbers!) what the removal of the stock intake resonator does when I finally get my intake in.

Oh yes and it’s conclusive…



Continue to...
Dyno Session II - http://www.mazda3forums.com/index.ph...391#msg1006391
Dyno Session III - http://www.mazda3forums.com/index.ph...997#msg1007997
Dyno Session I-III Summary - http://www.mazda3forums.com/index.ph...734#msg1018734
Dyno Session IV - 4-1 Header http://www.mazda3forums.com/index.ph...808#msg1062808
Dyno Session V - BSD kit http://www.mazda3forums.com/index.ph...096#msg1264096
Dyno Session VI - Larger TB http://www.mazda3forums.com/index.ph...196#msg1587196
Dyno Session VII - Engine Temp http://www.mazda3forums.com/index.ph...891#msg1924891
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Old 09-11-2006, 12:58 AM   #2
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Default Re: Dyno Dynamics 2.3 MTX Hatch 3rd Gear Pull

cool, that's a really smooth powerband.* *I wonder why * How is this dyno different from dynojets, doesn't the fact that the car is at an angle like that actually lower the readings?
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Old 09-11-2006, 06:46 PM   #3
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Default Re: Dyno Dynamics 2.3 MTX Hatch 3rd Gear Pull

[quote author=thebeansoldier link=topic=56566.msg943963#msg943963 date=1157950688]
cool, that's a really smooth powerband.* *I wonder why * How is this dyno different from dynojets, doesn't the fact that the car is at an angle like that actually lower the readings?
[/quote]

lnertia dynos like jet dynos uses the known mass of the heavy rollers as the resistance to the wheels and calculate that it takes X amount of power to rotate the rollers at Y speed and a computer calculates from there. Load/brake dynos on the other hand are connected to some form of brake sytem (usually water or some sort of electrical resistance) to resist the turning of the rollers. As the wheels turn the rollers, a sensor measures how much power is being held by the braking system which correlates to how much power the car is putting to the wheels. As far as I know I don't think the angle would make a difference.
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Old 09-16-2006, 09:47 AM   #4
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Default Re: Dyno Dynamics 2.3 MTX Hatch 3rd Gear Pull

Thank for the info lc. How long did it take to do the 3 pulls? I might be interested in checking it out some weekend.
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Old 09-16-2006, 11:55 AM   #5
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Default Re: Dyno Dynamics 2.3 MTX Hatch 3rd Gear Pull

[quote author=MZ3SP link=topic=56566.msg956310#msg956310 date=1158414468]
Thank for the info lc. How long did it take to do the 3 pulls? I might be interested in checking it out some weekend.
[/quote]

With everything we did about a hour.
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Old 09-17-2006, 12:10 AM   #6
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Default Re: Dyno Dynamics 2.3 MTX Hatch 3rd Gear Pull

good job lc

126hp
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Old 09-17-2006, 12:11 AM   #7
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Default Re: Dyno Dynamics 2.3 MTX Hatch 3rd Gear Pull

ps: thats just an other 126 reasons to go turbo!
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Old 09-17-2006, 06:14 PM   #8
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Default Re: Dyno Dynamics 2.3 MTX Hatch 3rd Gear Pull

Well I should be getting my intake installed and dyno'd this Saturday. About freakin' time!
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Old 09-17-2006, 06:58 PM   #9
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Default Re: Dyno Dynamics 2.3 MTX Hatch 3rd Gear Pull

ur F2?
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Old 09-18-2006, 12:47 AM   #10
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Default Re: Dyno Dynamics 2.3 MTX Hatch 3rd Gear Pull

[quote author=eurotuner link=topic=56566.msg958325#msg958325 date=1158533885]
ur F2?
[/quote]

no I sold it. Meant to get a K&N but I messed up and accidentally got an Injen but I think I'm going to just stick with it.
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