Since you don't have a lot of that stuff I'm guessing you're not heavily modded?
If you're using it to fix a knock issue that's one thing but if you're thinking you're going to make more power on a fairly stock vehicle you're probably not unless you have a real knock issue.
primarily what I find is that most vehicles are severely lacking in preventative maintenance/repairs. So your money could possibly be better spent elsewhere.
Stuff like the Upstream oxygen sensor needing to be replaced after 75000 miles or less. I've seen people still running the stock one at a hundred something...
