dmp

206hp...yup. Saw it...it's on film

Today a few NW RX8 ppl gathered for a dyno. MOST RX8s there spun about 185 at the wheels...very consistantly within a couple-few HP of one-another.


Until the Silver w/ Red/black leather went...198whp on one run...he hit 206 on another...His A/F ratios were in the mid 12:1 range; compared to my cars A/F's were were a solid point richer.

I'm not going to steal his thunder furhter, so I'll let him post up about it...


Thanks to all who posted up - I'll get pics/vids up before the weekend is over.

:D

No More Oldsmobiles

Uh-oh. More hp and it's silver.

DARKMAZ8

details pleez!!!!!!

truemagellen

variation is common...thus tuning can really make a difference with no additional mods

truemagellen

haha!

dmp

The car is just a stock rx8 with 14K miles. nobody is sure why, but his car stays nice and (safely) lean...unlike ours which dip into 'pig rich' conditions.

When we get $, we're thinking about swapping his MAF/ECU into another car to see if those could be causes.

Ike

What flash is he on compared to you?

dannobre

iTrader: (3)

Same flash as far as we can tell. It was quite a day. I have all the data on a CD...so when I get it organized I can send it to everyone concerned if they want it.

I have a problem with my car....for whatever reason it would max out at 130+/-. Ran it twice, six or seven runs each...with new gas in between...checked the plugs. It has run OK til this AM...and it crapped out on the way to Kirkland to the dyno ....after a fill up at a Chevron??

I ran it down to 1/4 tank...refiled, and dyno'd again...same thing


Anyone have any ideas......I also ran it with CZ on, off, out, reset. doesn't seem to be the piggyback it altered the A/F as expected, just no power. Coilpack??......By the way... the guys at Carbconn were great! www.carbconn.com. I guess I'll have to take it in with the dyno graphs ( the stock ones :D) and get them to take a look

Xyntax

Cool! You guys had 8s running dyno too! Four of us did ours here in San Jose. Check out our results at the West Forum.

IZoomZoomI

dam 206 stock... where is this guy!? That's what rx8 should be. Wonder what mazda did right with his car.

Xyntax

^ Probably screwed the ABS interference in the ECU thus freeing his RX-8 to run the way it should on a dyno :D

Nemesis8

iTrader: (3)

How about a teaser vid of our day. This was the highlight of our day. Click on the teaser.wmv file. It's 3186KB

http://www.hausers.com/nemesis8/videos/

DMP is going to host more vids once we get them rendered.

Reactionary

Finally, we got the counterexample. All us owners are going to owe you big time. How are you dynoing the cars? Everything Canzoomer said to do? Avoided limp mode?

IZoomZoomI

straight through aye? who's car was this?

Nemesis8

iTrader: (3)

Dynojet
DSC/TCS Disabled
5th Gear Pull
Wheel sensors left on the car untouched

Nemesis8

iTrader: (3)

That was a "Fastmike" mod to see what it would do. I missed the second pull flame. It shot out three feet! That was the third pull flame.

Ajax

Were all of the dynos run in 5th?

Fanman

So Nemesis, how much did you pull ? Was over at the So. Cal. meet met a few RX8 club members, had a good time.

jenkins-crew

maybe I missed it but what year was his 8?

MazdaManiac

iTrader: (3)

Myth. ABS (more accurately - TCS/DSC) does not interfere with dyno runs on this car.

There is no "limp mode" - at least not for these reasons. It is documented in datalogs while on the dyno. The ECU does nothing to pull power just because the wheels aren't spinning the way it wants to.

The ECU can affect power three ways - through fuel deliver, ignition timing and throttle position. It changes none of these while on the dyno.

IZoomZoomI

my abs light did turn on after the dyno run, so did one other owner. Can you explain this?

MazdaManiac

iTrader: (3)

Yes. Your ABS system didn't like seeing some of the wheels spinning and others not. This has been the case with ABS systems for decades.
However, it does not cause the PCM to pull power as others have claimed (provided your TCS is off).

cgrx

why the loss from the flywheel?
It should be less than average with eletric steering/carbon fiber drive shaft, etc.

Nemesis8

iTrader: (3)

Here are my pulls attached. The site conditions were: 59.86 Degrees F, 29.94 in-hg, humidity 45%, SAE: 0.96

dmp

One oddity I noticed yesterday...

All/most of us dyno'd about mid-140s lbs-ft of torque...that's about a 10% loss from the factory rating of ~160....I wonder why the car appears to lose much less tq thru the drivetrain as it does HP.