EFI Upgrade Kits

This kit is an excellent entry level kit for the person just starting to modify their MerCruiser Magnum EFI Series engine. This kit includes the "SE" Special Edition flame arrestor that utilizes a high flow K&N clamp-on style flame arrestor and high velocity air inlet adapter that will increase air flow by as much as 20%. And a Hardin Marine flow command adjustable fuel pressure regulator that allows you to tune to the proper air flow mixture by allowing adjustments from 25 to 65 PSI.

If you're looking for more acceleration, faster planing, and increased over a performance to the tune of up to 15 HP. In this "SS" Super Sport tuning kit for your MerCruiser Magnum MPI engine. This kit includes the "SS" sport series flame arrestor that utilizes a clamp-on style K&N flame arrestor with a Hardin Marine high velocity style air inlet. This kit also features reprogramming of your factory ECU where we will modify both the fuel and spark cones as well as increase the rev limit to 5400 RPM's. And lastly this kit comes with a flow command adjustable fuel pressure regulator.

At last the very best components are available in a kit. If your interested in increasing air flow by as much as 40% as well as fuel pressure and expanding your engine timing control to the tune of as much as 30 hp gain. Well if the answer's yes it's all here in one convenient package. Don't settle for second best. This kit includes the #1 EFI flame arrestor today the "XS" Exstreem series flame arrestor unmatched in air flow by any manufacturer to date. Also included in this kit is the flow command fuel pressure regulator allowing you to optimize your air/fuel mixture.  And lastly, we will reprogram your electronic control module for optimum performance.

Hardin Marine just introduced the MerCruiser 454/502 EFI Systems application to its line of high performance Flow Command adjustable fuel flow modifiers. The billet aluminum Flow Command is designed specifically for stock or modified 454/502 EFI systems. The Flow Command allows modification of the fuel flow rate to properly tune the air flow ratio. Ideal for use with high flow exhausts and intakes, the Flow Command incorporates these exclusive features:

• Bolt-on adjustable modifier for stock fuel regulators
• 6061-T billet aluminum case, CNC machined
• Allows pressure adjustments from 25 to 65 PSI
• Machined to exacting tolerances

Have you modified your stock Mercury EFI engine with high performance exhaust, bigger cam, high flow flame arrestor, supercharger? CP Performance can recalibrate your Mercury ECU (computer) to yield the very most of your engine power. The ECU precisely controls fuel requirements, detonation control, idle speed and rev limiter. We have multiple dyno-tested combinations and know what works. Call us with your application and we will lead you to maximum horsepower from your EFI engine. Allow approximately 4-7 days turn around time.