My W211 E55
#77
I'm just spitballing here, but my understanding is that our cars trap about 116 from factory...
Being conservative...Pulley/Tune gets you about 70ish more HP and maybe headers another 30...so around 100 in total?
That would probably be good for 8-10 more mph trap speed (which is what counts in a rolling race) so that would get you to around 125ish...and GTR's trap 122-125 from factory...full bolt on GTR's trap upwards of 135...
Me personally I only have tune and pulley so I don't imagine I'm trapping 125...I would guesstimate around 120...that's not enough for stock GTR's trapping 122-125...but man you got me wanting to test it out!