Today i installed some 18" resonators because when my exhaust is really cold above 4k i hear some rasp i hate. also there was some gargling on down shifting. there is no noise at all now! sounds way better! but its very quite now! im hoping the test pipes really kick it back up in loudness. also im making my own cai
So to update this I have all the parts needed but the filters. I ended up getting what you see in the pics. I'm going to cut my MAF sensors off the stock air boxes as its the same ID as the Stillen's. the couplings provide the bends needed and it will sit just like them.
Now doing this I've spent about $110 on the 6 couplings and clamps. I could save more if I bought a lot of each item and I was thinking about eliminating the 90* couplings as people on eBay sell pipe in a 90* bend. I'd just give them the length I needed since the filter end is shorter than the MAF section. The k&N filters that Stillen uses are $70 shipped from the cheapest place I could find online. So people out there doing drop in's for around $70, or whatever the drop in's cost, for $110 more you now have a Stillen setup! Its the same size pipe, same MAF, the only difference is the post MAF tubes. Z1's post MAF tubes run about $112 but this way you don't have to drop $500+ cash right away for Stillen. You can spend $180 first, get the cold air like the Stillen's, and then buy the post tubes and only have $292 invested!!
Parts needed
2- 2.5" straight couplings
2- 90* bent couplings
2- 45* bent couplings
2- 2.5" to 3" couplings
2- 2.5" long, 2.5" piece of pipe for in between the 90* and the 2.5" to 3" coupling
2- 2.5" long, 3" piece of pipe for the K&N filter to bite onto the end
2- K&N RU-2820 filters
16- hose clamps
1- 36" long 2.5" pipe
Then later if you want, post MAF tubes.