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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 03-17-2011, 03:17 AM   #1
Registered User
Join Date: Feb 2009
Location: Seattle, Washington
Posts: 37
My Ride: e46 m3
HPF Subframe reinforcement

A couple weeks ago, I decided to get my subframe reinforced because living in Seattle, the roads are pretty shitty! Every bump, pothole or hobo I run over, I'm always paranoid that my subframe is slowly deteriorating. I then decided to call BMW Seattle and BMW NA however, the deadline for getting the inspection ended fall of 2010 so they basically told me to F*** off or pay for the inspection and hope for the best that my subframe was not cracked... :spank: if it is, BMW NA will deal with it case by case and there would be no guarantees. I also planned on running KW coils soon so getting the subframe reinforce regardless of cracks or not would probably be the best thing to do. :twocents:

Anyways here are the pics of the reinforcement process + I got my Rtabs done. You guys can guess what shop this is :lolhit:

Subframe is out!!

Turns out no cracks and super clean underside :thumbsup2:

Grinded down, welded in and sprayed for rust protection

Rtabs installed

The Powerflex Rtabs made such a big difference! The power transfer to the ground is amazing and the old Rtabs were almost like new even though the car currently has 34k miles on her odo.
Interior: Recaro Pole Positions & Schroth Harness, Wedge Engineering, Hardwired Valentine 1, DICE
Exterior: Carbon CSL Trunk & Diffuser, Aurora AE,
Suspension: KW V2, Powerflex RTABs, HPF Subframe Reinforcement
Performance: ///M3AN Headers, Supersprint Race
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