Originally Posted by Marc 85Z28
The Spectre intake is good, and you can get it for around $100 through Advance Auto. If you go this route along with a tune (which you SHOULD), get the Spectre 4" MAF housing (swap into the CAI directly) and an LS7 MAF from Amazon. The MAF dramatically increases the poor throttle response. Replace the Spectre filter with a better quality unit. The provided filter is pretty crappy.
The catback will work well with any of the major headers on the market. Some will bolt directly to it without any adapter pipes.
Regardless of what aftermarket exhaust you go with, the DOD will sound horrible. Have it disabled when tuned. Fuel economy difference will be negligible.
What filter do you recommend? How do I get the 4" housing?
I plan on doing DoD delete, replace cam, lifters, rockers... I'm looking to see which oem parts would be best as I can get the oem way cheap