A friend of mine dynoed a evo6 mak and was dissappointed by the 209 CV result at wheels which gave 300 CV at flywheel. is that normal, a 90 hp loss from engine to wheels. Note that ccording to DIN max power the car wooshes at 313 CV and is completely unmodified euro import.

 

25-30% loss is fairly normal.

 

Ouch... that hurt !!! Where's the MY01 218 bhp then ?

 

Always wondered about this.

Power at wheels is the 'real' figure, is it not, and power at flywheel is the actual manufacturers and 'max power' figure.

this correct?

if so the 208/215bhp for scooby would be at flywheel, which would equate to what at the wheels? or is this the at wheels value, which would then lead to the 240/250 at flywheel figure that some have stated before?

 

Well if u visit the dyno section u will be dissapointed! For std scoobs around 160-180 at the wheels!

 

130 even!

 

215bhp quoted by Subaru is at the flywheel, which equates to around 130-140bhp at wheels (very roughly). Check out dyno results at top of page to see the relationships between the two.

 

4 wheel drives are the worst for this,so much power is lost going through the 4 wd system.....Sunny Gtir's lose a massive ammount from flywheel to the wheels.

 

Hi Stelios,

Just seen this post, dont know how I missed it. Where did your friend get his car dyno'd
Who has a 4wd RR here? If he got it dyno'd on a 2wdRR by some method, I think the results would be a bit out, from what I've been told.

WREXY.

 

stupid quesion, but someone has to ask..... and it's me, what does CV stand for.

 

Another thing is that one RR will quote a different hp reading at the wheels of the same car to another RR. For eg. My friends 4wd dyno in OZ usually quotes 89 kw at the wheels, (119bhp at wheels), for a MY00 UK AUS spec stocker and another 4wd RR quotes 108kw at the wheels (144bhp at wheels) for the same car. Some dyno's get calibrated differently. My friends used to show more and believe or not my old Ford which blanked his dyno (more hp than his dyno could handle) was the reason his dyno got calibrated, cause when my car came off and another car went on the readings went crazy.
RR's in OZ never convert to flywheel power after a wheel reading cause it won't be a correct figure.

Dyno's should only be used to see improvements in hp made to a particular car before and after mods.

A dyno and always the same dyno should be used to get that first reading before any mods are done to the car to see what power you start with and then any mods done, again on the same dyno to see how much power you've gained. If you go to a different one it will give a different reading and will just confuse.

WREXY.

[This message has been edited by WREXY (edited 06 June 2001).]

 

Stelios,

That's fantastic news. We must organise to go real real soon. A friend of mine who has been in a Mac and then my car reckons mine felt a little stronger down low. I couldn't get past 2nd gear cause of the traffic congested roads in Athens so I couldn't show him my top end power to compare. But from what I've read here those PPP cars get up and go and should be even on power, if not better, than my car.

WREXY.

 

Stelios,

Dastek, who are the makers of Unichip have on there website, Greece, as one of the countries they distribute to. But Greece is not underlined yet, the other countries are, which probably means they haven't finalised yet. Maybe Ofart Autotuning will be the shop to get the deal. I hope so cause I doubt there are any other 4wd RR's here. Do you know anything about them, as tuners?

WREXY.

 

Weather & heat inside a RR please make a difference as well, if you want to match 2 cars you need to do them 1 after another trying to keep the temp. inside very similar during both runs.

As for power, be it max power or pub power talk people say my XXXXXXXXX has 90Bhp at the wheels cos its beter than saying I have 90 at the flywheel.

I used to have a 320 Bhp Cossie, thats 320 at the flywheel, but would never admit it was at the flywheel when the BS in the pub took over, I then would not disagree when people said 320 cossie, thats about 400 at the flywheel

 

CV=cheval vapeur (French for steam horse )A bit lower than bhp
Wrexy m8 4wd dyno in Athens : Ofart Autotuning tel 01-9237008 with Vamag dyno (?)My friend is insisting that the Mak is low on power compared to his previous std Scoob! I dont believe him of course as the dyno shows 300 at the wheels so I ll test drive it today/tomorrow. He even claimed that up to 120km/h a pd scood was 1/2 a car length ahead! He was hugely embarassed as he actually asked the guy for a burn up at the lights to test his mak ! All this make me v. sceptical as the Mak is dealers' and looks immaculate.

 

Not sure what CV stands for but it could be bhp.

One more point about RR's, to compare 2 cars, that is to see if a mates car has more power, than say yours, again you would have to use the same dyno to see the difference in power. No good going off 2 different dyno's as the figures will vary.

Cheers,
WREXY.

WREXY