Transmission Loss
 

Just been looking at the MLR and looking through some of the EVOs for sale.

What sort of transmission loss do them boys work on cause theres a Evo 9 for sale with 282.5 Bhp ATW which he's worked out to be roughly 380 at he fly :wonder: thats 35% loss :nono:

Surely they must be a similiar loss to a Impreza ie around the 18% Mark?

It's one way to make your fly figures look good down the pub i guess :thumb:

its more like 26%, its not as simple as x percentage there s a hug long calculation, but roughly speaking its 26%

If thats the case then mines making roughly 360 at the fly on the standard Turbo. Surely thats not right ?? :wonder:

yeah mate sounds about right, mines running 340 at the fly 260 at the wheels, or near as damit

SO the figure Subaru give.. is that at the wheels / flywheel?

if you mean the 276, thats at the flywheel

So 276 Divded by 1.26 gives u 219 ATW

279/100 * 74 = 204bhp

bear in mind thats a rough thing not exact

The new-age ECUs actually work out a theoretical at-the-wheel figure, but I'm not sure how. On the run that gave me 390bhp flywheel on the rollers, the ECU reckoned 275 or so at the wheels. But as I said, I've no idea how accurate it is.


M

390/100 * 74 = 288 so not far off at all

Ok to further my question as im a bit daft :) If my car is quoted as 220ps on all scooby websites (import tdo4 wagon auto) is that at the wheels or the flywheel? Im guessing the flywheel ?

yeah it is at the fly, also ps isnt = to bhp though dont forget (although not far off)

Yeah but 22ps is what, rought 218 bhp or something daft like that, not a lot in it i knoow.. Cheers :)

heres a link to conversion figures , citroen no less, pmsl


c_converter_rates Page

Bhp to KW 0.7457 KW to Bhp 1.3410
Bhp to PS (hp DIN) 1.0139 PS (hp DIN) to Bhp 0.9863


so 220ps = 216.986bhp

Glad thats so simple ;)

it aint pmsl, thats just a very very simply way of working out whats realy a long winded calculation

:luxhello: My scoob has gained about an extra 20bhp just by reading this thread! :norty: :lol1: ;)

how you managed that? lol

Because I was always told that transmission loss was around the 18% mark, if it's infact 26% then my bragging rights for my fly figure have just increased by around 20BHP ;) :D

Like having a free penis extension. :lol1:

:D

lol, nah its more than 18% i think FWD is 16% by comparison, although im not sure if that figures near the mark or not in truth. always been more interested in the awd figure :D

Ste u and me been speaking to the same tuner me thinks ;) :thumb:

I've had three sessions on the rollers (and used two different ones), plus have had umpteen delta dash runs (and had the car on a weigh bridge)....mine has always been around the 14-16% mark....

every scoob is different

mine was 272bhp at the wheels 2 weeks ago :)

my mate put his on with a much bigger spec then me and got around 276bhp at the wheels with much bigger transmission losses