KC Maxx Performance

KC Maxx Performance Professional EFI tuning and Dyno Services

Another Thursday, wrapping up another cam swap.
06/18/2026

Another Thursday, wrapping up another cam swap.

6.6L gas engine, 87 octane, Stock vs Tuned, nice gain for a tow rig. Do you have a tune on your gas tow rig? 6.0, 6.6, a...
06/07/2026

6.6L gas engine, 87 octane, Stock vs Tuned, nice gain for a tow rig.

Do you have a tune on your gas tow rig? 6.0, 6.6, and 8.1 always have low end torque left on the table over GMs factory programming.

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.

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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