Im assuming that my car still retains the stock air conditioner but since ive done the engine swap i had to up grade the fuel pump to prevent the engine from running lean .. and causing the temperature gauge to rise... since due to high temperatures from before the fuel pump upgrade...... the ac in my car seems to be not cold at all. How do I recharge my freon in my car... any pics or a website with a step by step walk through would be greatly appreciated