SL55/63/65/R230 AMG: Renntech Tune + Pulley RWHP?
Does anyone know how much RWHP I will pick up? I think it's around 30 but I thought I'd ask.
I currently have the stock SL55 1/4 mile record. 12.096 @ 116mph.
Any guess where I will be after the Renntech mods? 11.8 @ 118?
JR



