MegaSquirt 3 EMS System V3.57 (MS3357-C_BL) MegaSquirt

For the best selection of traditional Megasquirt products for precise fuel control, there’s no better place to buy than at MAPerformance. We carry the highest-quality selection of standalone Megasquirt and microsquirt (ECU plug-n-play systems) on the internet. Shop from the best aftermarket tunable EFI products, standalone ECU items, and other labeled kits in stock at the lowest cost on the web, guaranteed thanks to the MAPerformance Price Match Guarantee.