I have put a custom cold air k. N intake system and a greedy exhaust on the car and have e. 3 iridium spark plugs and it is a straight drive and has an adjustable ait controller by surge performance it is fully adjustable and they say up to 50 or more horse power that is what they say 30 to 40 is what you are going to get but with intake exhaust and ait controller that 60 horse power over stock and it still runs in a safe zone where there is no worries about engine damage just break the engine in first before being aggressive with your driving style until broken in and you will have no problem break in is everything, no break in you end up with a broken down car so just be gentle until broken in
Favorite I open the hood of the Mitsubishi lancer that they had used when I was buying my car they had the exact same engine and was about the same price but the Mitsubishi was used with 50 k on it and was not any nicer so I said what the interest on this car they said 14 percent the new Kia 4.9
Cold air intake by kn and a greedy exhaust and ait controller by surge and these little cars turn into beast and go to kfx performance you can get any kind of performance part you want for this little car so please how ever you drive so check there site out they have superchargers and turbos for them
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