Where is this coming from? I am not sure that anyone knows how low the dyno was reading. We could pull any arbitrary number to multiply. I never made any claim of what the real HP readings "should" have been. My point is simply that they were consistent across the board.

In all honesty I don't really even care if my HP was higher or lower than anyone else. I am only interested in understanding the readings so that I know if I have improved my car (and by how much) when I make changes in the future. At the end of the day, who gives a rip if someone elses car performs differently other than to understand what changes will effect performance on your own car?

 

Me - I must be the only person

 

stfu brettus!! go hangout with the kiwi's and albatrosses Sheww!!!!

:D

btw, can someone loan me 1.5k?

 

lol @ Brettus

I liked the tag in someone else’s Sig ... the RX-8 is not the fastest car on the road, just the most fun. If having massive HP is the only goal, buy a Mercedes-Benz SLR McLaren Roadster. 641 HP stock and you won't have reliability issues

But seriously, what difference does it make if someone has more HP than you? The question is, do you like your car? If so, great. If not, change it or buy a new one.

Jeff, can you explain the relative wheel speed to run time setting? I understand torque and HP. What I don't understand is how the dyno's are configured. The load they exert on the car should be constant but the wheel size would change the ratio of the dyno wheel to the car wheel. The transmission does not make the reading more or less accurate. That in itself would be irrelevant since the RWHP is a function of how much load is applied to how fast the car's wheel can change the speed (acceleration). It does not matter what is in between the engine and the wheel as far as RWHP is concerned. Obviously it does matter for the transfer efficiency but that is a whole different topic (that MT guys like to focus on).

Oh, and for the numbers the Turbo guys were posting ... they are fairly meaningless. The Turbos rely on the air force which is not constant when changing speeds. On the dyno the air flow is only whatever the external fan is blowing at. That fan speed/air pressure is not changing at all. This means they are not getting the real effect of the turbo in comparison to what it would when the car is actually driving. I would expect that every turbo would have had low numbers simply based on that fact unless there were really strong fans blowing that would emulate the same volume of air as if they were driving.

For Phil's SC I would not think that to be the same. I would really love to know what his numbers were. Guess I should not have waited at the BBQ.

 

I'm considering doing yet ANOTHER DynoDay this summer and I'm curious to see who would be interested.

the Dyno will be at a different location and will cost roughly the same. (give or take a few bucks)

If there's enough interest I will pick a date and negotiate a price for us...

 

The dyno has to be set up to understand the effective gear ratio of the car being tested so that it knows the engine RPM from the drum speed.
It also is set to load the drums based on how long you want the run to be.
Since the dyno was expecting t lower gear ratio of a M/T 4th, it didn't load the drums as heavily fo the A/T 3rd and calculated the motor to be spinning way faster than it was.

Air Force?
Huh? Turbos make their own air pressure. They don't care if the car is moving.

 

the sc 8 did not get more hp then you, basically proof that your dyno sheet was off lol.

doesnt really matter either way haha

and i would be up for another dyno day

 

Yep, that certainly does sound likely. And Jeff's explanation makes sense.

I do think it is a bit strange that they would want to use the engine's RPM to calculate RWHP since it would be way more accurate and consistent to use the actual Dyno wheel RPM to calculate it.

And Jeff, air force is probablly a bad term for me to use. I have heard that the air pressure generated from the car movement has an additional effect on turbos and that you can alter the dyno read of a turboed car by increasing or decreasing the air flow generated infront of the car. I do not know if that is true or not but assumed that as a possible reason that the turbos could have performed lower.

Jedi, I would be up for another dyno. All I wanted it for in the first place was to have a baseline to compare mods to. If my last one was flawed then I basically dynoed last time for nothing :-(

 

I am down, if I can get more time with the tuner =). Otherwise, it really isn't worth it to me at this point.

 

I am down too

 

up and down and all around

hopefully by next dyno i have a turbo kitz

 

I have no problem making the trip.
I love you guys and SoCal is alright by me.

Might have to come up with a little per diem for me so I don't lose money on the deal, but I doubt it will be too painful since I drive out and I like shitty hotels!

 

we'll take care of you Jeff, I won't let you lose money on a deal, not on my watch.

 

And to be honest, if you want to come early, I will pay to have you hang out in my Garage for a little bit and shake down the car. I hear it is pretty hot in the AZ right now.... its a mild 86 in my garage right now.

 

never mind all this SoCal BS . NZ is where you want to come MM . I have a big garage (bigger than Slavearms) with central heating (i'll put a fan heater in the middle ) and a beautiful epoxy coated floor that is really comfortable to lie on . Waddayasay MM ?

 

I'm there!
Not sure what I can do for you and I'm not sure you want to sink $1400 USD just to send me on vacation.
But I'll go!

 

Maybe when you guys get your kit ready to go ... That would be a good deal for me

 

Ray...........help me sell the fidanza and exedy clutch

and I will buy your clutch and flywheel damn it T.T

(shouldn't have ordered it at that time, damn mee!!)

 

Well, I do have a complete kit sitting here, ready to go!

Probably not what you were hoping, though.

 

bret,

i think he has you cornered!

and jeff, check pm. i need about 3 min of phone time.

beers

 

I am still interested in an AP if they add '08 support. Any chance of that happening before you come down?

 

Almost none.
I don't expect the '08 support until I get a few other things I've asked for.
So, it might be a couple of months.

 

i will be there!! with no 8 though... will you guys flame me if i bring my little ricer honda?

 

Yes.

 

You have NOOOOO idea how bad the flaming will be.