KC Maxx Performance

KC Maxx Performance Professional EFI tuning and Dyno Services

Oof, drove a little too long on this one 😬
05/06/2026

Oof, drove a little too long on this one 😬

“They say 'loud pipes save lives”, but apparently, the wrong ones just kill your horsepower. 📉Check out the difference o...
04/09/2026

“They say 'loud pipes save lives”, but apparently, the wrong ones just kill your horsepower. 📉

Check out the difference on this Dyno sheet. When we talk about a 'Flowmaster disaster,' this is exactly what we mean. Swapped out the restriction and picked up 22 hp and 38 ft-lbs of torque. Turns out this engine wasn’t slow, it was just trying to breathe out through a straw.

KC Maxx is closed  for spring break from March 26- April 5thGo to our website to book appointments while we are gone. ...
03/26/2026

KC Maxx is closed  for spring break from March 26- April 5th

Go to our website to book appointments while we are gone. 

Book appointments soon if you want in before the end of March.
03/12/2026

Book appointments soon if you want in before the end of March.

02/11/2026

Ever seen a melted lifter tray? Yeah me neither until today.

While I am off at sick week, the boys back at home are wrapping up this LSA Ctsv Magnuson, 2650 install cam kit fuel sys...
02/04/2026

While I am off at sick week, the boys back at home are wrapping up this LSA Ctsv Magnuson, 2650 install cam kit fuel system upgrade, plus another truck AFM repair. 

01/27/2026

If you are installing aftermarket parts, make sure the installer understands what it takes to actually complete the combination so that you don’t end up paying to redo the job less than a tank of fuel later.

01/26/2026

Wrapping up another AFM repair job, temperature is too cold for you to work in your garage. Give us a call and we will install your kit that you’ve already purchased or you can go with one of our packages.

Starting 2026 off with another torn down 6.2L getting a cam job and lifter repair done. How many miles does your AFM/DOD...
01/02/2026

Starting 2026 off with another torn down 6.2L getting a cam job and lifter repair done.

How many miles does your AFM/DOD/MDS system have on it?

We've had a relatively quiet period on our page as a result of the summer rush, but our scheduling is starting ...
11/10/2025

We've had a relatively quiet period on our page as a result of the summer rush, but our scheduling is starting to normalize. We're now booking top-end packages and supercharger installs for late November. Our dyno lead times are averaging 1-1.5 weeks. Don’t put off those winter upgrades, you’ll want tha extra power come Spring time! 🤣

Address

1602 Little Avenue
Grandview, MO
64030

Opening Hours

Monday 8am - 6pm
Tuesday 8am - 6pm
Wednesday 8am - 6pm
Thursday 8am - 6pm

Telephone

+19134323785

Website

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