I currently have a 3" SCCA legal catback with the Magnaflow muffler. I just received my 3" DP with flex section, 3" high flow cat and a 3" band clamp. I didn't receive any bolts or nut with the shipment. Am I supposed to reuse the stock bolts? I thought Buschur DP didn't use the "spring" bolts that connect the stock DP to the O2 housing? Just wanna make sure I have all the right hardware before I start the install. Thanks in advance.

 

I've never seen a Buschur downpipe (for the EVO) with a flex section. Interesting...

Has he changed his design?

Anyway to help you with your questions. If the flange is the one that retains the OEM gasket, reuse the OEM bolts. This is the flange I have on my exhaust as it was a prototype from Buschur.

If the flange is flat and fits over the lip of the O2 housing, you'll need to get some fasteners. Due to the exhaust having a flex section I suspect that this is what you've got.

 

That's my fault, I shipped that box. My dad is out in Hawaii on vacation. Please give us a call at the shop on Monday and I will send the needed bolt kit right out to you.

David Buschur
www.buschurracing.com