Tuning Guides by Make

American Performance

Dedicated to the Pursuit of Performance

Performance Modification & Tuning Guides

We are automotive enthusiasts with a passion for all things performance. We’re here to bring you the best, most accurate, informative, and honest content around modifying and tuning your vehicle.

Money might not buy you happiness, but it can buy you 500whp and have you ever seen someone wide-open throttle, pinned to their seat, and sad? Didn’t think so.

Check The Latest Videos

JDM Performance Guides

Latest Content

5.2 Voodoo engine

Ultimate Ford 5.2 Voodoo Engine Guide

Though it was relatively short lived, the Ford 5.2 Voodoo engine was for a time one of the top naturally aspirated V8s available on the American market. Ford only put it inside the Mustang Shelby GT350 and GT350R, but goodness was it glorious. Making 526 horsepower and 429 lb-ft of torque from a naturally aspirated…
7.3 Godzilla engine

Ultimate 7.3 Godzilla Engine Guide

Though it was released in 2020, Ford’s 7.3 Godzilla engine hearkens back to an earlier and simpler time. A time when big-block V8s with pushrods used to terrorize the roads and rip up the blacktop. This was before the days of direct injection and twin-scroll turbochargers being stuffed inside of small-displacement inline-fours and V6s. It…

2.4L Ecotec Oil Consumption – Causes & Solutions

The GM 2.4L Ecotec engine is interesting in the fact that is a good engine with a bad reputation. Released in 2006 and discontinued in 2019, the 2.4L I4 Ecotec lived a relatively long life under the hood of some of GM’s best-selling models. With modern engine technology such as direct injection, variable valve timing,…
6.1 HEMI intake manifold, Holley

6.1 HEMI Intake Manifold Upgrade Guide

Recently, we looked at the 6.1 HEMI engine that lasted from 2005–2010 inside various SRT8 badged vehicles. Depending on the model, they make between 420–425 horsepower and 420 lb-ft of torque. Still, some people consider them to be underpowered from the factory, especially considering their massive 6.1 liters of displacement. Previously, we talked about upgrading…
Kenne Bell 6.1 HEMI Supercharger

6.1 HEMI Supercharger Guide

Inside the SRT8 powered Chrysler 300C; Dodge Charger, Challenger, and Magnum; and Jeep Grand Cherokee, the 6.1 HEMI is a fantastic engine. From the factory, it puts out 420–425 horsepower and 420 lb-ft of torque, making for an exhilarating and very fast ride. Still, with 370 cid of displacement, for some the performance is still…
Ford Fusion

Ford Fusion Throttle Body Problem Guide

For many years, the Fusion was a reliable contributor to the Ford lineup. Debuting for the 2006 model year and lasting until 2020, the Ford Fusion spawned a rebadged version in the Lincoln MKZ. Unfortunately, quality control issues that led to numerous recalls and technical service bulletins (TSBs) led to the Fusion’s eventual downfall. One…
6.1 HEMI

Ultimate 6.1 HEMI Engine Guide

Even though it was only available for barely 6 years of production, the Chrysler/Dodge 6.1 HEMI engine is still very memorable. Introduced for 2005 and discontinued in 2010, the short-lived 6.1 HEMI powered various Chrysler, Dodge, and Jeep vehicles with the SRT-8 badging. It was a slightly larger and more powerful version of the 5.7…