silverscooby09

iTrader: (1)

Has anyone got a bhp figure for a standard bugeye wrx? after what I think was a disappointing RR session yesterday I am trying to benchmark against others to see where I need to go next.

Thanks

Myles

iTrader: (40)

218bhp is the official figure, as far as I remember. What did you get, and what are your mods, if any?

TonyBurns

iTrader: (3)

218ps or 215bhp.

Tony

Myles

iTrader: (40)

Darned ps.

joz8968

iTrader: (13)

Ze Chermans have ever so slightly smaller work ponies

Myles

iTrader: (40)

Ja ja, sprecken ze ding dong.

joz8968

iTrader: (13)

Hoot.

Flammenwurfer nein nein!! Aiieeeeee!!!!!

Myles

iTrader: (40)

Donner und blitzen. Hande hoch. hande hoch Tommy!

joz8968

iTrader: (13)

konceppt

buy mine.its 271bhp and cheap!!!!!!

silverscooby09

iTrader: (1)

It got to 200.7bhp, only mods so far are:
SIT TMIC with y piece
Prodrive back box
Pipercross air filter
Uprated mainifold and up pipe.

All a little disappointing as we have paper work saying a prodrive pack was fitted but obviously not the case now as we have looked at the ecu and there is no holigram plus the bhp should be higher with a prodrive

konceppt

thought standard power was 218bhp?

silverscooby09

iTrader: (1)

8 year old car you would expect to loose something....18bhp??

Myles

iTrader: (40)

Now is the figure from the factory at the flywheel, and the rolling road at the wheels? Never done a rolling road so not sure, might be the answer though.

silverscooby09

iTrader: (1)

From what I heard yesterday there is a 15% difference between the wheels and flywheel.

My 200.7bhp was at the flywheel. Minus 15% makes it 170bhp at the wheels?

so if the stock 218 is at the wheels it would be c250 bhp at the flywheel.

either way mine would appear low.

joz8968

iTrader: (13)

218PS/215bhp is the official flywheel figure. A conservative 15% loss would mean only 182bhp at the wheels, so even that's significantly down from 200.7.

So I'd say the 200bhp IS the flywheel figure... just that it's a bit down from the 'expected' 215. Could be ineffective fans on the RR... or any number of variables. Even over inflated tyres can "lose" you bhp on a RR, etc, etc...

silverscooby09

iTrader: (1)

I am only down 15bhp from the claimed standard so really i am not to loose too much sleep, although I would have expected more given the minor mods.

It is also running just over .90 (bar) boost

What would people suggest next?.....now I know it has not got a prodrive ecu I am not too worried about loosing the ecu with a remap

I am thinking:
Remap
Boost control
Decat down pipe

Not sure about the order though.

joz8968

iTrader: (13)

Yeah, a 15bhp diff will be hardly noticable -- with it, at most it'd prob account for an ever so slightly keener acceleration.

However, 'normally' you'd expect a figure of c.5% difference either way i.e. more like anywhere between c.205-225bhp...

nick172sport

iTrader: (6)

my mates 2oo2 bug went on a rolling road standard apart from a decat was running 240 bhp 85k aswell

joz8968

iTrader: (13)

...Even if you had, you'd sell it first for decent wonga, and then fit a regular cheap replacement, ready for the EcuTek'ing...

silverscooby09

iTrader: (1)

surely an STI and not a WRX

dynamix

iTrader: (3)

how do you work that one out?

bigsinky

rolling roads can basically give what figure you want to hear. 18hp loss in an old car is pretty good.

nick172sport

iTrader: (6)

wrx mate

joz8968

iTrader: (13)

Less friction than correct or under inflated ones? No? Actually that's tripe isn't it. It's the force of the tyres exerting on the rollers (how well they're strapped down), that could affect the reading, right?

kevaldo

iTrader: (4)

Ive got a jap wrx bug and its 250bhp, now time for mods lol.

dynamix

iTrader: (3)

Common trick on dyno dynamics rollers is to add more pressure, this will reduce the rolling resistance and show higher WHP figures. With the way DD rollers extrapolate these WHP to flywheel figures, this can often add more to the flywheel figure too, where in reality there is no difference in the actual engine power.

Dastek rollers would account for this in the coast down losses.

Have you got the dyno graphs ?

The standard power is around 215bhp (flywheel) for a newage wrx. Some people believe that there is a set % for drive train losses but it is much more involved than that as that doesnt account for gearbox oil temp, tyre resistance, and any other saps on power through the system. That standard wrx would have somewhere in the region of 180 whp

silverscooby09

iTrader: (1)

here is the graphs

nick172sport

iTrader: (6)

no wrx not sti

dynamix

iTrader: (3)

hmm to the graph

looks like their set up of Ambient Temp and Intake Temps is slightly wrong giving false readings.

graphs looks normal albeit on the low side.