So last nite i met up with one of my friends who has a 2008 bmw 535i that wanted to check my new SHO out. After checking it out we decided to do few friendly runs. I won but have some questions. I noticed that my car seems to hesitate a bit while at WOT and its hard to explain. It pulls hard but it seems to "skip" a bit at when accelerating in 2nd-4th gear. It feel more like traction control even tho its off, just odd. Also i tried to brakeboost one time in 2nd and the car juat lost all power after i let go of the brake. Anyways I think its either the gas from the dealerahip that was 87-89 that i mixed 92 with about 5 gallons to make it full once I got home or it could be the sparkplugs. On the maintenance history i do not see anything other that oil change and tires so I am assuming it still has stock plugs at 53k miles. I plan to stay stock until probably june-july of next year but would like to get plugs for it now and new airfilter since the stock one is dirty. What plugs are recommended for staying stock and what filter? Also do I gap them at .030 or .035?
Btw how badly should I have beat the beemer? Off the line it was not even close but from 1st gear I only put about a car on him by 65-70 and from 2nd gear we were even until about top of 3rd where I started to pull a bit and decided to shut it down right away due to excessive speed. Doea that sound about right? Both cars are stock. Oh and I do plan to run 93 w/o ethanol as soon as I go through this tank of gas!
