I have the Invidia downpipe. It's a one piece with the high flow cat. It does not replace the O2 housing. I want to install it but my concern are those bolts with the springs connecting to the O2 housing. Are they tricky to mess with? How do I know when to stop tightening them? Do I need an extension to get to them? And last but not least, what size are they?! Any help will be greatly appreciated. I would like to install it this saturday.

Thanks

 

Using a impact gun with an extension and swifle sockets and its not that hard. The left side will be easy to get to but the right side will be a pain due to the bend on the downpipe. You'll know when it gets tight enough because you can see the spring compressing.

Have fun.

 

I won't be using a impact gun though. But thanks for the reply

 

If you're not using an impact gun then I'd say use plenty of PB Blaster or WD40 and let it soak for a bit. Could be a hard job for just ratchets and wrenches, since you may not get enough torque to bust them loose or tighten them.

 

I figured as much lol. All in all I know its not going to be the easiest thing. do you happen to know the bolt size?

 

I think 14mm. Could be wrong because I'm forgetful.

 

They are I checked today haha. Thanks for the feedback. Saturday can't come soon enough.