What are good ways to add hp other than intake and exhaust, because i already have that, also other ways than turbo'in. Money is not the problem either, just dont feel like turbo'in my car due to possible engine problems.. thanks for looking and please let me know some ways!
-XxKamilGxX

 

13b,20b swap, sell your car and get an evo.

 

If this is not a problem

This shouldn't be a big concern

Engine problems can happen at any time, and there is no factual evidence that turboed engines fail faster than naturally aspirated engines.

 

You can spend thousands of dollars chasing HP in a naturally aspirated Renesis. By the time you gain 40 HP, you could have installed a turbo/supercharger and gained 100+.
If you are not going turbo, you'll have more fun with the car if you spend your money on tires, wheels and suspension upgrades.

 

send your renny to a builder to tear apart, port, fancy it up, spend lots of money and have 220hp at most.
If you want power turbo or Supercharge it. If you really want NA, go 20b.

 

check this out for some sweet high HP mods:

http://lmgtfy.com/?q=site%3Arx8club....rformance+mods

 

Or PP 13b