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Originally Posted by Tom1222
I doubt it, heck it doesn't even come with Fog lights why would they use forged internals in the Si? They are probably those Powder type Polymorphic kinda pistons that everyone is using these days. They are coated and have some benefits especially during cold starts when the engine is starved of oil,
however they don't hold up well under Boost and Nitrous can easily eat a hole right into the top of the piston.
If you go Nitrous your warranty is toast and you could ruin a perfectly great car. The R18 engine is more suited for Nitrous since it's a lot lower compression and it should work okay if you keep it to about 55 shot.
I was thinking Nitrous but with over 11.5 to 1 compression I don't know.
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I want to know how nitrous can eat a hole in a piston... N2o is nothing more than oxygen and nitrogen.. There is nothing in there that can "EAT" a hole into a piston... N2o drops cylinder temps by alot and also intake temps.. Damage that can be cause is by improperly setting up your system... nitrous gives instant tq and it creates a shock from that instant power that can overwhelm stock engine parts.. But thats not till you ge to 150+... Im runing 75shot and its doing really good..