Went Dynoing today........ :(

[Well-sy]

This is my RX8 231 at the dyno:
 

 
Result
 

 
Any ideas people. From looking at the graph my only guess thus far, is that it may need a major service, i.e. plugs/ coils etc.
 
Any help appreciated

[probedb]

Is the graph at the wheels or the flywheel? The 231 is at the fly.

[m1tch]

Whats that? A supercharger needed? really? AND its shiny?

[Well-sy]

Yes, some form of FI is definetly needed!
 
So what is it supposed to be at the wheels?

[clive]

This is horse power at the wheels and this figure is absolutely fine  :driving

The 230 figure comes from the flywheel horse power where the engine would be Dyno tested before install, once in the car the gear box, diff, propshaft etc all contribute to frictional loss that brings the wheel horse power down to the type of figures you are seeing    

Hope this helps

[Well-sy]

ahhh I see. Thanks, never realised this.
 
Still gunna make that figure bigger tho lol

[m1tch]

I don\'t know why they unbolted the FI systems off the RX8 anyhow lol its a sports car and it seems to be a step backwards lol They even went backwards reducing the oil injectors causing early engines to fail...silly ford infected cars lol

[m4drx]

its is very interesting this would come up now as a friend of mine out his 231 on the dyno recently it has:

39k engine
uprated coils (mrp)
uprated leads (mrp)
new 02 (mrp)
Decat (mrp)
Cat back

it made.......


160 atw and 192 at the fly - bit shocking really.

[RXSpeedy]

Ahh so that was your RX8 it was looking very nice only RX7 and RX8 down there yesterday. Next time ill say hello if your aout.

[Well-sy]

Ahh so that was your RX8 it was looking very nice only RX7 and RX8 down there yesterday. Next time ill say hello if your aout.

oh hello
 
yes that was me at the rr day. Did have a nose about the rx7, probably one of the first cars I looked at. I think now I just get instantly drawn to rotary lol :rollin

[Well-sy]

its is very interesting this would come up now as a friend of mine out his 231 on the dyno recently it has:
 
39k engine
uprated coils (mrp)
uprated leads (mrp)
new 02 (mrp)
Decat (mrp)
Cat back
 
it made.......
 
 
160 atw and 192 at the fly - bit shocking really.

wow not good. espeacially since the only part from that list I can match is the cat back!

[clive]

its is very interesting this would come up now as a friend of mine out his 231 on the dyno recently it has:

39k engine
uprated coils (mrp)
uprated leads (mrp)
new 02 (mrp)
Decat (mrp)
Cat back

it made.......


160 atw and 192 at the fly - bit shocking really.

Hi Tharik,

You should realise that If this is the case then this cars engine has somthing either seriously wrong with it or the dyno was reading very very wrong ,

For instance We have know these portable rolling road dynos to be wayyyyy out,



If the horse power figure is correct then this car must really have some bad issues like bad starting misfiring etc etc,



If all is well get him to run it up the rad against another 230

[BlitzBoy]

 
Any ideas people. From looking at the graph my only guess thus far, is that it may need a major service, i.e. plugs/ coils etc.
 
Any help appreciated

Guys this figure is FLYWHEEL horsepower, not wheels, if it was wheels it means it has 250 at the flywheel which I doubt for a stock machine.

Most Rx8s (231) on dynos produce around 160 to 180 at the WHEELS

[BlitzBoy]

Also Clive and everybody with an Rx8 , you will have problems dynoing a RX8 correctly.
Please read this article , it explains the issues well.
http://www.modified.com/editors/technobabble/0312_sccp_mazda_rx8_miata_horsepower_dyno_test/index.html

your cars are probably running fine

[Well-sy]

Also Clive and everybody with an Rx8 , you will have problems dynoing a RX8 correctly.
Please read this article , it explains the issues well.
http://www.modified.com/editors/technobabble/0312_sccp_mazda_rx8_miata_horsepower_dyno_test/index.html
 
your cars are probably running fine

 
 I think this particular dyno was fairly advanced, my car was done on a \'rotary\' setting, infact it was a twin rotary setting as it has different modes for how many rotors you have.
 
 So does this mean my car is running very well, considering all the other figures iv seen in this thread.
 
also looking at the bhp line, could the initial dip in the curve be cured with a very good full service?