Originally Posted by hard45' post='1019498' date='Sep 28 2009, 03:58 PM

Nah dude, the Magnaflow muffler is here to stay. It sounds good and for some reason, it seemed to have helped my car.

Friday night the misses and I were heading home in a hwy in Mexico and then out of nowhere, this vato in a E39 M5 pulled next to us and asked for a dance. We were neck to neck for a good two miles or so. We then slowed and started again but this time I was behind him in the same lane, seconds into the second dance, I noticed that I was really close to his rear bumper and decided to back off...perhaps it was draft and not because maybe I was faster...he continued on.

We later pulled up to a cantina and he asked me what was done to my car, I said: Muffler, RPI scoop and K&N filter with the charcoal filter removed. He said that I was the first non M5 E60 Series car to run with him like that. FYI, he was the only passenger in his ride while I was hauling the wife and I. She is only about 140lbs but it was extra weight nonetheless. I think I would have beaten him by half a car or a car if I was solo...maybe. I think I will be removing all the spare tire crap just in case I end up in Mexico again.

Thanks,
Hard45

Originally Posted by miguex' post='1019506' date='Sep 28 2009, 05:14 PM

Nice! yes our 545i has a hidden potential.

Yes, remove the spare tire. it helps lots the weight. I bet someone here will tell you to remove the floor mats! lol... Joking of course!

did you know about Sprint Booster? it is a must!

How about the LSD? I bet you will love it! that is the best mod of all (IMO) but yes pricey.

Originally Posted by hard45' post='1019766' date='Sep 28 2009, 09:14 PM

Hello Miguex,

Oh yeah, I am aware of the spring booster and yes, I have one...it was my first mod.

What is a LSD?

Thanks,
Hard45

Originally Posted by miguex' post='1019787' date='Sep 28 2009, 10:33 PM

there are some info:

http://www.optionimports.com/quaife.html

http://www.youtube.com/watch?v=AHmSDXrVG84 (video)

https://5series.net/forums/index.php?showtopic=43670 (one member installed it on his 545i)

https://5series.net/forums/index.php?showtopic=64556

http://www.diffsonline.com/product/customdiff5.shtml (the shop sells LSD kit for BMW)

In summary: all M has LSD that is why the manufacturer does not want LSD on non-M cars so there are aftermarket ones.