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Hey I need help with customizing my 07 Honda Civic SI, for racing on mountain roads any Ideas, the only limitation that I have is that I'm still under warranty, and being a college student I need it. So Im up for any ideas to improve my civic for the mountain roads

 
Rep Power: 812

power or suspension? or both. those cars do not really get much of a boost with bolton mods unless you get a turbo or supercharger. but you have warranty so that wont work yet. how about get the HONDATA reflash, you wont get any extra power, but it does shift the powerband down by 1000 rpms, so you will reach peak power sooner.

 
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I was thinking more of improvement on the suspension, since the body is already great on grip I was hoping to put more grip on it.

 
Rep Power: 812

can upgrade the sway bars, get lowering spring and performance shocks, front upper strut bar, better tires (the most important), camber kit, energy suspension lower control arm bushings and sway bushings, better endlinks, etc.