P1-Underground Tuning

10/22/2026

What do you consider a high horsepower car that is street driven daily? Also, what is your go to mod list to achieve that horsepower?

10/21/2026

This is a personal attack on Marc. Lol

10/17/2026

If I told you that you can pick up 350hp to the wheel for a set of mods that run roughly 11 grand, would you do it? And you can use affirm to do it!

Would you do it?

10/16/2026

2025 S650
G2 ESS
115mm pulley
2M Catless LTH
H Pipe
X85
Lawn Racing fuel system

Marc's car.

Not bad at all.

10/16/2026

https://www.p1underground.com/

We had our website updated to be a little more user friendly. If you guys can, please take a look and give us some ideas. If it looks good, let us know. If you want to see something else, let us know!

Thanks,

P1-Underground Tuning is a full-service performance tuning and automotive shop in West Monroe, Louisiana, offering custom dyno tuning, diagnostics, engine swaps, and mechanical services using industry-leading platforms.

10/15/2026

Tomorrow, we will be releasing our video on the Lawn Racing fuel system.

Today, we installed it on Marc's car and tuned for it.

He is out testing it this evening.

10/15/2026

Come and see us, Saturday!

10/06/2026

We want to welcome TPS Motorsports to the family! We will be doing a massive overhaul on our site to not only make it user friendly, but to offer their inventory as well.

With their parts and our tuning, you cant go wrong. And if you do go wrong, its ok, we still love ya.

To Mike and the crew at TPS, welcome aboard. We are happy to help.