I dynoed my modified RX8 in Kirkland at Carb Conn.



Results:

200.8 RWHP / 148.6 FT-LBS (SAE Corrected to 196.77 / 142.75)



Site Conditions:

Dynojet 1-21-06. 63 Degrees, 47% Humidity, Altitude 250 feet.



Mods to my car:

Racing BEat REVi Intake, Ultra Plug Wires, Lineage Grounded, Unorthodox Racing Pulleys with 11% Underdrive, Mazdaspeed Lightened Flywheel, Rotary Performance Supercat Midpipe, Racing Beat REV8 Dual Catback Exhaust, Blue E-Manage with Slight Fuel Mods Only.



I plan on adding the Axial Flow Engineering Supercharger to the car next year after the engine management is all worked out with Richard Paul.

not bad

Thanks - It will get better. I have the Innovative Motorsports LC1 wideband with the XD1 gauge going in to monitor the O2 separate of what the canbus PCM is telling me. Once I have a better handle on the lambda ratios, I will tune the mix even better to about .92-.93 where the most power is to be made. The PCM is pulling timing at the upper end, so I need to add back in a few degrees to get back to 30 advance. I might even go with a full standalone for fuel and spark with the Mazsport Interceptor-X PCM, which is a customized Microtech with a built in harness and MAP sensor. Right now I'm just fooling the PCM with the E-Manage above 6200 RPM and 70% throttle in the open-loop.



I only have one more bolt on, and that would be a header. But all the work to date is struggling with the Siamese center exhaust port.

Dam thats as much as most bridgeports

no offense to eight and rotary owners.. wishin this wasnt the case

but this is sad... specially with all those mods..

the six generates similar whp numbers and more torque with just an ecu flash and intake..

and her base is 18hp less than the eight..

https://www.nopistons.com/forums/pub..._DIR#>/sad.png

While I appreciate your enthusiasm for another Mazda product, your post does not add merit to this thread. We all know that the 6 is a great car also, but a couple of items to remember:



It's front wheel drive

The V6 is a 3.0L piston engine

The manual V6 weighs 3287 lbs



My 8 in comparison:



Is rear wheel drive

Has a 1.3L ROTARY

And it weighs slightly under 3000 lbs now



PS: I am looking at a 6 for my wife https://www.nopistons.com/forums/pub...R#>/tongue.png

dont mind me .. its not a fair comparison... and my enthusiasm its not with the six ...

just expressin my disappointment for the lack of power the eight produces..

specially in comparison with a fwd 3200lb daily driven sedan..which is exactly my point...

ran the six gstock class against that of a bstock eight last year ...

was further disappointed by the eights results... figured id be outpowered-handled..

didnt drive away with the eight years ago from the dealership due to seating capacity btw...

That's ok. I have AMPs back if he loses in his Mazda6 at the lights. How much does the rx8 weigh? My car corner weight with a 48/52 F:R ratio. Cross weight of 49/51%, total weight 2820 lbs, full interior. Makes 196 RWHP and 183 ft-lbs torque. Although my engine might go kaboom at 146,000 miles... and only 78 psi cmopresson on the front and rear rotors...

I'm cool with that and I know what you mean about being dissapointed. Mazda did a pretty good job of extracting all the power out of the 8 in stock trim. Bolt on mods don't respond the same way because of the ECU getting in the way. My first dyno bone stock produced 177 RWHP sae corrected. I have only managed to get 19 HP out of my mods, but I don't have it completely tuned just yet. I posted here so that everyone could see this first hand. The Renesis has a tuff engine management to crack.

my Rx8 bone stock before I did anything to it. dynoed 196rwhp.. later down the road I dynoed 242rwhp with no bolt ons

OK, must have been a nitrous shot https://www.nopistons.com/forums/pub...1047683894.gif

yeah. curiosity is killin the cat here.

I am guessing Ito played w/ the timing to produce more hp in stock trim??????

It was ported. aux bridge.

I was talking on the 196. I figured there were some porting changes to get 242. Still good to konw.

That must have been one tuff porting job to pull off. I'd like to see the exhaust runners worked personally.

I know this thread had it's last response almost a month ago and I'm responding to a post from 2 months ago but it just has to be said. What's so sad about this? Show me another nonturbo 2 rotor this streetable that makes this much power. I'll wait. go look at the 6 port dyno charts here. We've got guys building 13B's, porting them, standalone ecu's, exhausts, etc and they are only approaching this number and this motor hasn't been opened up or even tuned as good as it could be. I'm failing to see the issue here. The Renesis by far makes more power than any other rotary at it's civility level. It takes a bridgeport or a peripheral port 13B to walk all over this number. The best streetported 13B's are only at the same level. Maybe with a few a little bit higher but those are built motors that have had everything done to them. Have you ever seen the exhaust ports in a Renesis? They are terrible. It's a wonder that engine makes any power at all yet alone more than a streetported and properly tuned 13B. bolt-on's don't do much on the Renesis like they do on the 13B. They are hard to get more out of. The only rotaries I see anywhere that have more power than this nonturbo from the factory are turbocharged. This is a nice number. Who cares about the 6 or any other car? What kind of dumb comparison is that. The Renesis also makes less power than the Queen Mary II or an F-18. I'm happy to see a rotary do this without any port work. The rotary community wanted more power for years and when Mazda finally gives it to them, people still complain. That is what's sad.

you can get a whole better car for less. i think thats what amp was referring to.

Is this a 4 or 6 port engine?



I'm hoping for 200hp at the prop (aircraft) with a 4 port and aftermarket ecu.

This is the 6-Port Manual N/A Renesis

better? depends what you mean

but mazda6 can hardly be in the same sentace

i've driven both a rx8 and a 6



you cannot compare them!



rx8 hands down and i dont even really like the rx8 that much.....

I'll take a supposedly underpowered manual trans RWD car over any FWD car anyday.



Mazda 6? I hate those cars...they look very nice, but are crap.

really how so...curious as to how you came to this conclusion..

agreed.. definitely not in the same class.. the six was merely brought up as an example...

siting my disappointment... eight bein above higher than the six in a lot of aspects... except power..



theres the speed6.. is that a better comparison..

the speed3 is comin..

hopin and wishin for the speed8.. not just in cosmetic parts mazda peddles now...

are you saying the rx8 is slower in the straight line then the mazda6? i hope you are kidding.

you guys read too much into this.... let me rephrase

im stating that for a car thats agreeably classed below the level of an eight....

you got a daily grocery getter fwd LSDless thats not so far off in power