The Unofficial BMW M5 Messageboard (m5board.com) - View Single Post - Dinan 540-S3 Dyno Results

540-S3 · 31st May 2007, 23:51

I had my 1997 S/C 540 dyno'd yesterday at West Coast Viper today. Dinan claims 414hp at the crank, so I was expecting around 364 at the wheels. The tech said he thought it would be closer to 330. We were both surprised by the results at 400hp and 358tq at the wheels or 448hp(?) at the crank. Either their results are skewed or a previous owner made some mods that I was unaware of. This car was actually Steve's R&D car. Could he have made some changes that he made only to his car? Maybe someone changed out a pulley. Anyway your comments are welcome.

31st May 2007, 23:51	#1 (permalink)
540-S3 Member, Sport: On DSC: On (>100 posts) Join Date: Jan 2006 Location: Southern California Posts: 144 Thanks: 0 Thanked 3 Times in 3 Posts	Dinan 540-S3 Dyno Results I had my 1997 S/C 540 dyno'd yesterday at West Coast Viper today. Dinan claims 414hp at the crank, so I was expecting around 364 at the wheels. The tech said he thought it would be closer to 330. We were both surprised by the results at 400hp and 358tq at the wheels or 448hp(?) at the crank. Either their results are skewed or a previous owner made some mods that I was unaware of. This car was actually Steve's R&D car. Could he have made some changes that he made only to his car? Maybe someone changed out a pulley. Anyway your comments are welcome. __________________ o 1997 540i6 o Dinan supercharger system o Dinan stage 3 suspension system o Dinan wheels o UUC OE-sized CeraMetallic clutch o UUC lighten flywheel o UUC EVO3 SSK/DSSR o M-Tech illuminated shifter o M5 3.15 LSD o Cubic trim o Gauge rings o OEM In-dash CD o Ultimate pedals o Hella AE's o 400 RWHP o