DIYAutotune is the premier MegaSquirt reseller! offers the full line of Bowling and Grippo’s MegaSquirt® Products as kits or fully assembled and ready for use. All kits are fully labeled, including everything you’ll need to build your own unit. Additionally offers the professional products MS3-Pro, MSPNP, and a vast number of custom add-on products. Same day shipping on in-stock orders received by 2pm EST.