I bought a W211 E55 not to long ago. Cant tell if it was modded tune/pulley wise , anyway to find out ?

The car pulls VERY HARD... throws you back into your seat and JUST GOES .. All ive done to it so far is Secondary Cat and Resonator delete, The Reason I ask is A few of my buddies have 335i's putting down 420whp/450wtq average.. and I usually pull on them if not stay even, now those 335i (like my old one) use to trap 116-118mph in the 1/4mile... Which mean the E55 doing the same ?

I checked the Supercharger pulley its stock.. I cant tell if the Crank pulley is.. it looks stock..

I dont want to order a Pulley / tune etc if i already have one thats why I ask.

Thanks
- Q

 

Post a pic of the crank pulley and I will be able to tell you if it is oem or aftermarket

 

Is the cooling system stock? First thing I would check is pullies, cooling system, and then of course tune. If you have a data logger you could easily see if you were tuned by comparing values to stock values found here.