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Pud237 · 10-04-2008

That's why I asked for a scan of the graphs, to see if I could make out whether that would be the "at the wheels" figure or "at the flywheel", calculated by adding the power from the coastdown to the power at the wheels..

Normally there's roundabout a 19% transmission loss on a FWD Alfa, so if yours truely is 136bhp at the wheels that makes nearly 168 at the flywheel - well over the standard figures and that's before the remap.

I suspect that it was calculated to be 136bhp at the flywheel, giving you about 110bhp at the wheels before, and about 124bhp at the wheel after..

10-04-2008	#7 (Post Link)
Pud237 AO Platinum Member Join Date: Apr 2006 Location: North Yorkshire Posts: 13,537 Member car: Alfa 156	Re: 147 2.0 Selespeed Maping results That's why I asked for a scan of the graphs, to see if I could make out whether that would be the "at the wheels" figure or "at the flywheel", calculated by adding the power from the coastdown to the power at the wheels.. Normally there's roundabout a 19% transmission loss on a FWD Alfa, so if yours truely is 136bhp at the wheels that makes nearly 168 at the flywheel - well over the standard figures and that's before the remap. I suspect that it was calculated to be 136bhp at the flywheel, giving you about 110bhp at the wheels before, and about 124bhp at the wheel after.. Back on the road: Alfa 156 3.0 24v V6, Silver with red leather, Q2 diff, GTA Teledials, headlights & inlet manifold, AutoDelta carbon intake, decat pipe and SuperSprint rear box, FK coilovers, Dastek Unichip - my 245bhp beast! Gone but not forgotten: Alfa 156 2.4 JTD Veloce, Vela Blu, Angel 'mad map' & BMC CDA, Ferodo DS2500s - the fastest tractor in town! AO 'Bratpacker' No 5.