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My RX8 on the Dyno

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Old Mar 4, 2007 | 10:12 PM
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My RX8 on the Dyno

Our local Mazda owners club had a dyno day on Saturday. Went out the dyno and was pretty happy with my numbers: 179.4-rwhp. Their inductive was broken so we couldn't get a torque reading
I will upload the dyno chart soon, too.
Sorry I don't have more pics, I need some!


That me in the black shirt and jeans, closest to the camera



And Jeff's (mazdamaniac) super-hawt RX8! That thing is damn sexy!

Last edited by chickenwafer; Mar 4, 2007 at 10:15 PM.
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Old Mar 4, 2007 | 10:23 PM
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Oh yeah, someone videotaped it so I will have a vid soon, too.

Dave
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Old Mar 4, 2007 | 10:45 PM
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From: Y-cat-o NZ
hope they had a fan going - don't see one there ?

Is MM going to post his dyno too ?
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Old Mar 4, 2007 | 10:47 PM
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From: CA, Rowland Hts.
looks fun. we have a dyno day here in socal as well at the end of the month.

let's see those dyno sheets!
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Old Mar 4, 2007 | 10:59 PM
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Originally Posted by Brettus
hope they had a fan going - don't see one there ?

Is MM going to post his dyno too ?

MM had a problem with his spark so he stopped making boost. He's gonna go back and rerun it later. I think he did 206rwhp or so with only a 1500rpm range of boost basically.
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Old Mar 4, 2007 | 11:00 PM
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250 WHP I will be happy...

I think mine has 150 whp....

Need a SC !!
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Old Mar 4, 2007 | 11:06 PM
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Well I'm not "Happy" with 179, but considering I only have an Intake (and it's an Umnitza one that people think suck) as my sole performance mod (AP pulley on it's way!!) I was happy and had the highest HP of all the NA RX-8's the showed up (out of 4)
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Old Mar 4, 2007 | 11:13 PM
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From: Y-cat-o NZ
Originally Posted by chickenwafer
MM had a problem with his spark so he stopped making boost. He's gonna go back and rerun it later. I think he did 206rwhp or so with only a 1500rpm range of boost basically.
tell him if he had a SC he would not have had that problem .
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Old Mar 4, 2007 | 11:19 PM
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From: Denver
Originally Posted by Brettus
tell him if he had a SC he would not have had that problem .

He might slap me
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Old Mar 4, 2007 | 11:29 PM
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Originally Posted by Brettus
tell him if he had a SC he would not have had that problem .

that is just rude,

funny, but rude.

anyone what is the rear on that car???

beers
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Old Mar 4, 2007 | 11:39 PM
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Originally Posted by swoope
that is just rude,

funny, but rude.

anyone what is the rear on that car???

beers

On the rear of what car? If this is a joke I don't get it...........
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Old Mar 4, 2007 | 11:45 PM
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Originally Posted by chickenwafer
On the rear of what car? If this is a joke I don't get it...........

no,

not at all, what rear is on the back off mm car.. is it stock, it is hard to tell at that angle.. it looks different...

beers
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Old Mar 4, 2007 | 11:51 PM
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From: Under my car
The rear bumper is OEM. The rest is MS.

Yeah, if I had an SC I wouldn't have had that problem. I also wouldn't have had over 200 HP before 4000 RPM, either, which I did.
My HP curve looked like a torque curve until 5500 when the combination of too much fuel and a bunch of boost blew out the spark.
Odd thing is, it only did that on the dyno. No problems on the street before or after the runs.
Not sure why, but the dyno was FUBAR at that moment since the RPM pickup didn't work.
Were going back in two weeks.
I'll have video of chickenwafer's run in a few days.



Attached Thumbnails My RX8 on the Dyno-azmc_dyno_day_030307045.jpg   My RX8 on the Dyno-img_1006.jpg  

Last edited by MazdaManiac; Mar 4, 2007 at 11:54 PM.
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Old Mar 5, 2007 | 12:29 AM
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From: Y-cat-o NZ
Originally Posted by MazdaManiac
Odd thing is, it only did that on the dyno. No problems on the street before or after the runs.

you would act up as well if that many people were lookiing up your undercarridge ..
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Old Mar 5, 2007 | 01:09 AM
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From: Denver
Originally Posted by Brettus
you would act up as well if that many people were lookiing up your undercarridge ..

The thing is a marvel of engineering. It was required to check it out!!!
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Old Mar 5, 2007 | 01:38 AM
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you would think the driveshaft was a stripper pole.. and it had strippers on it...

beers
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Old Mar 5, 2007 | 01:55 AM
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From: Under my car
It is and it does.
Wait a minute - which shaft are we talking about?

It was kinda funny - when the tech brought the car in and jacked it up, there was this mad rush to get under it.
I'm under that car so often, the very sight of the undercarriage makes my back ache.
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Old Mar 5, 2007 | 02:50 AM
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From: Denver
Originally Posted by MazdaManiac
It is and it does.
Wait a minute - which shaft are we talking about?

It was kinda funny - when the tech brought the car in and jacked it up, there was this mad rush to get under it.
I'm under that car so often, the very sight of the undercarriage makes my back ache.

HAHA, that was funny. And the rock damage to your exhaust and motor mounts, "Welcome to Arizona!" exactly.

Hey, Jeff, just be sure to let me know when you head back, I wana be there when you lay down over 300-rwhp!
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Old Mar 5, 2007 | 11:42 AM
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From: Under my car
I'll call Devin at the end of this week.
I'll probably go there on Thursday the 15th or Tuesday the 20th.
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Old Mar 5, 2007 | 12:14 PM
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bummer about the damn plugs going out.
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Old Mar 5, 2007 | 01:37 PM
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Not a biggie. I'm just not sure why it misbehaved on the dyno but ran great on the street. It wasn't overheating.
I only had 3 quick runs, so I didn't get any adjustments in between.
When I go back next week, I am going to have the dyno to myself for a bit, so I'll be able to dial it in.
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Old Mar 5, 2007 | 01:51 PM
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what kind of dyno?

I ran 160whp on a dyno dynamics. Which always reads lower than the other dynos. They call it the heartbreaker!

From what I've been told, the Dyno Dynamics Dyno is a much more accurate reading of HP.
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Old Mar 5, 2007 | 02:12 PM
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From: Denver
Originally Posted by chr1s
what kind of dyno?

I ran 160whp on a dyno dynamics. Which always reads lower than the other dynos. They call it the heartbreaker!

From what I've been told, the Dyno Dynamics Dyno is a much more accurate reading of HP.

This was a Dynojet. There was a guy there with a souped-up Mazda 6 Sportwagon that had done 199 or 202 or something before on a Dynopack and then on this Dynojet he did 187, but the tech didn't take it to redline so his numbers were a little screwy.

Jeff, just let me know what day it is. Thursday works better for me But w/e day is fine.
Also, did your 8 drive home fine? Only acting up when on the dyno?
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Old Mar 5, 2007 | 03:40 PM
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From: Under my car
Originally Posted by chickenwafer
Also, did your 8 drive home fine? Only acting up when on the dyno?
Yeah, it drove great. Got into it pretty hard on Bell rd on my way back from Tony's house after Todd's spring install.
Did a couple of long 4th-gear pulls (just like the dyno) and it ran like it normally does in the 11:1 range.

I'm thinking there is something speed related going on. I'm going to gang the front wheel speed sensors to the rear with an impedance matching transformer for the next dyno session.
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Old Mar 5, 2007 | 04:54 PM
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From: Denver
Originally Posted by MazdaManiac
I'm thinking there is something speed related going on. I'm going to gang the front wheel speed sensors to the rear with an impedance matching transformer for the next dyno session.
That sounds like it might clear things up. If the PCM freaks out because the rear wheels are doing 150mph and the fronts are moving, it could start shutting stuff down, thinking you're about to be in an accident or something? Worth trying anyways.
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