[ Few questions about the greddy SP ] Options

[hioctane]

I am getting the greddy SP exhaust system this friday and injen intake for $250 this friday.

1)Would it be better if i installed the system myself or take it to the shop? I have no clue on how to install the system, but my dad might. I've read the DIY section already.

2)Would it be better to keep the greddy muffler or purchase an apexi N1 muffler?

3) What should I spay on it to prevent it from rusting?

Thnxs in advance

[Milds3vn]

Im not sure if you will have the same problem that I did but when I went to install my greddy I found that I had a second o2 sensor that needed a place to fit in the exhaust. So a hole wass drilled in the exhaust and a threaded washer was welded on so the o2 sensor could screw in. Other than that the only things you have to do is cut the bolt heads off because they are probably not going to just come off unless maybe the exhaust is hot but then thats dangerous. So you could check if you have an additional o2 sensor after the cat and if your bolt will come off. I dont know what kinda tools you have but if you can handle those two problems then do it. Exhausts are not hard at all but most of the time the bolts have to be cut off or drilled out. Good luck, hit me up with any questions.