We specialize in high performance modifications of most American sports cars such as Vipers, Corvettes, Mustangs, Camaros, GTOs, Firebirds, and Ford GTs. An outstanding relationship with most of the nations leading performance part venders, allows us to install components to meet the needs of the most discriminating drivers.

We can install all performance parts such as turbo and super chargers, gears, exhaust systems, suspensions and drive train components. According to your needs, we can also fabricate custom systems, and DynoTune your car using state of the art computer software such as SCT, Diablo and DynoJet Research. A team of friendly and knowledgeable staff members are looking forward to helping you meet all of your high performance goals.

Some of what we have:

Dynojet 248x.
HP tuners for all LSX powered cars, trucks and SUV’s
Diablo Sport
SCT for mustangs (Lighting support coming soon)
LT1 edit for OBD1 and OBD 2

Contact info
Lethal Performance
18838 FM 2252
San Antonio, TX 78266
Phone: 210-656-5220
Email: lethalperformance@yahoo.com