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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > Help with Downpipe Install



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      03-20-2018, 11:52 AM   #1
blau iii
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Help with Downpipe Install

I'm banging my head against the wall with my new DPs. I'm fairly mechanically inclined; have done VCGs, OFG, suspension, etc. so this shouldn't be that hard.

For the life of me, I can't get the four bolts off the OE DPs and the cat back exhaust. I live in Pittsburgh so 94,000 miles of crap has built up on these. I don't have a torch, any other ideas on how to get these off? Suggestions on where to cut?
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      03-20-2018, 01:22 PM   #2
Donutz
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Are you using an impact gun? You can snap those suckers if you put enough torque on them. Mine snapped using hand tools. 1/2" drive rachet, universal joint, 16" extension, and manly arms.
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      03-20-2018, 01:24 PM   #3
blau iii
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Quote:
Originally Posted by Donutz View Post
Are you using an impact gun? You can snap those suckers if you put enough torque on them. Mine snapped using hand tools. 1/2" drive rachet, universal joint, 16" extension, and manly arms.
I was trying to do it with a 1/2 breaker bar, didn't even think to use my impact driver. I'll give that a go.

My nuts were pretty corroded though, had a hard time even getting a 12mm socket on there.
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      03-20-2018, 07:08 PM   #4
IllSic_Design
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Last 2 sets I did I broke off the nut pretty easily with a 1/2" ratchet and socket. You should be able to get them to break with a large breaker bar, if not it's drill time.
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      03-20-2018, 08:05 PM   #5
blau iii
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Thanks guys, you've inspired me to get back under there.. though my buddy (works at a muffler place) offered to do it for $100 but won't be able to do it for another week or so..
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      03-30-2018, 09:55 AM   #6
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I got 3/4 off during my install, and one I had to cut through with a hand saw. Just keep powering on you can do it
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      03-31-2018, 12:29 AM   #7
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