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  1. Doing some upgrades...

    C900 Performance, Mods & Tuning
    I am thinking of doing some upgrades how should i go about this? new APC.. tuning the ecu or adding a chip.. exhaust systems, ignition system... injectors fuel rails...air intake what order or steps should i do first.. not looking to see big HP right out of the bag just want to go about it the...
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