Swear i just gained 20 hp

UNKNOWN_370

All the above oils are very good. The OEM will run you $90. With your warranty it will cost you 60. Castrol edge will run 60 costing you 30. Castrol will save you a few bucks. Aftermarket CAI's won't cool much better than the stock CAI. I think investing in silicone hoses will show better results for cooling purposes and horspower gains will be useable throughout the RPM range vs using an aftermarket CAI that makes you lose up to 12hp from 1000 to 4600rpm then bursts with over 15hp over 5200rpm.

Spikuh

I am a little lost on this. How do silicone hoses help cool better? The only real information I can find on them says they will outlast the stock hoses because they are rubber. Do the silicone ones do a better job at preventing heat soak or something of the like?

wstar

I don't know *exactly* which forms of rubber and silicone are used for the factory hoses and the aftermarket silicone ones, but generally speaking the thermal conductivity of the two is in the same rough ballpark with generic silicone rubber coming in around 25% higher (0.2 vs 0.16), looking at data from around google/wikipedia. That seems like the right direction (coolant is hotter than front engine bay air, so silicone hoses would cause more cooling of the coolant than rubber hoses), but all things considered even if the effect is there the difference is probably very insignificant in the big picture of your cooling system.

The primary benefit is that the silicone hoses will last longer and withstand more pressure/heat/time abuse before cracking. I'm still running stock hoses on mine for now since they're still healthy, but whenever they finally do start showing signs of age, I'll replace them with silicone instead of more factory stuff.

__________________
7AT Track Car!
Journal thread / Car setup details

UNKNOWN_370

Good silicone hoses are completely heat resistant to 330 degrees helping bring colder air into the manifold. The stock rubber doesn't resist heat as well on the air temp itself.