EFI Performance

EFI Performance Contact us via our email page: https://efiperformanceusa.com/contact
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03/26/2026

Lost in waterfall views - more importantly, what’s the best 5x114.3 set out there? Let us know in the comments below!

Check out our website and book an appointment to get your summer set rolling!

Our new website, efiperformanceusa.com, is live! Explore our comprehensive dyno database featuring real dynographs from ...
02/17/2026

Our new website, efiperformanceusa.com, is live! Explore our comprehensive dyno database featuring real dynographs from – perfect for comparing modifications and power. Don’t miss our constantly updated gallery showcasing customer builds – yours could be next.

01/07/2026

Brian’s VA STI with a freshly broken-in 750 short block up on the . black + horsepower enhancers (supporting mods) coming soon 👀👀

Devon’s freshly built FA 600 short block, ready to drop in the car. Can’t wait to see the dyno numbers! 🏎️🏎️
01/05/2026

Devon’s freshly built FA 600 short block, ready to drop in the car. Can’t wait to see the dyno numbers! 🏎️🏎️

Happy New Year everyone!!! We’re closed today but will be back in the shop tomorrow. Thank you for all the support throu...
01/01/2026

Happy New Year everyone!!!
We’re closed today but will be back in the shop tomorrow. Thank you for all the support throughout 2025—we’re looking forward to an exciting season back on track! 🏎️

Happy Holidays everyone!Wishing you all the best as we cruise into the new year 🏎️ 🏎️
12/25/2025

Happy Holidays everyone!

Wishing you all the best as we cruise into the new year 🏎️ 🏎️

In the shop we have a customers single-overhead-cam EJ257 block paired with a nitrided EJ25 crankshaft, and H-beam rods...
12/06/2025

In the shop we have a customers single-overhead-cam EJ257 block paired with a nitrided EJ25 crankshaft, and H-beam rods with ARP 2000 rod bolts. Getting ready to time the motor and throw on the accessories!

Stay tuned for the oil pan install!

Happy Thanksgiving! 🦃 Thankful for every build, every dyno pull, and every customer who keeps us doing what we love!!!
11/27/2025

Happy Thanksgiving! 🦃 Thankful for every build, every dyno pull, and every customer who keeps us doing what we love!!!

Robert Stark’s brand-new 2025 WRX TS — just 300 miles on the clock — is in for some goodies and a tune!We installed an ...
11/24/2025

Robert Stark’s brand-new 2025 WRX TS — just 300 miles on the clock — is in for some goodies and a tune!

We installed an Varex WR Valved Catback Exhaust, an Top mount intercooler, and intake.

Next we installed an accessport and got to work tuning the car!

For any inquiries please visit our website, text, call, or email us!

11/18/2025

POV: You daily an EJ and the head gaskets check in on you first.

And that’s a wrap on the Spec Miata season! Huge thanks to everyone who supported the EFI team this year. Now it’s time...
11/07/2025

And that’s a wrap on the Spec Miata season! Huge thanks to everyone who supported the EFI team this year. Now it’s time to start prepping for next season
- it’s never too early! Bring your Spec Miata by the shop to get it prepped, dialed in, and safety-checked for next year’s races.

Address

8 Sympaug Park Rd
Bethel, CT
06801-2838

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 6pm
Thursday 9am - 6pm
Friday 9am - 6pm
Saturday 9am - 12pm

Telephone

+12037481115

Website

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