BOOSTEDJUNKIE GARAGE · PEÑITAS, TX

Mercedes-AMG Service, Tuning & Custom Exhaust in Peñitas, TX

We work on all Mercedes-AMG models. From maintenance and diagnostics to tuning, custom exhaust and performance builds, we plan the work around your vehicle and your goals.

Serving Mission, McAllen, Edinburg and the Rio Grande Valley.

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Examples from the garage

AMG GT, GT S, GT R, E63, CL63, SL63 and SLS AMG records are part of our garage story. Bring us your chassis, engine, existing modifications and intended fuel so the next step fits your Mercedes.

These are examples, not a complete list of the Mercedes-AMG models we service. The parts listed online are only part of what we offer; ask us about your model.

  • AMG GT R
  • AMG E63
  • SLS AMG
  • AMG CL63
  • AMG SL63
  • SL600
  • AMG GT S
  • AMG GT
  • W176 A200/A220
  • W212 E63
  • C218 CLS63
  • W213 E63
  • G-Class

Confirm compatibility and service scope with your vehicle’s year, model, engine and modifications.

The plan for your Mercedes-AMG

A W212/C218 downpipe is not a W213 part. We confirm the chassis and engine before discussing parts, then review ECU, TCU and CPC support for the specific control units and software.

What we do

Maintenance

Oil and filter service, brakes, plugs and coils, cooling-system work, fluids and leak repairs.

Diagnostics

Tell us when it happens, any fault codes and what has been changed recently.

BJG Health Checks

Pre-purchase inspections and checks before we add power.

ECU tuning

The right calibration starts with your car: its hardware, fuel, current software and how you drive it.

Custom exhaust & fabrication

Tell us how you want it to sound, what needs to fit and what the car is built to do.

AWD dyno

Ask us about baseline runs, before-and-after testing, tuning sessions or dyno rental.

Calibration and unlocking support depend on the control units and software versions. We confirm compatibility before moving forward.

Dyno-proven results

Results from complete tested configurations. Gains are shown only where a recorded baseline exists.

BJG-DYNO-0028

2012 Mercedes-Benz AMG E63

FBO · E40 · BJG calibration

690.1 WHP

849.6 WTQ lb-ft · Recorded result · Baseline not supplied

2012 Mercedes-Benz AMG E63: single recorded dyno run; STD correction; Smoothing 5. BoostedJunkie watermark.View setup & original chart →

BJG-DYNO-0030

Mercedes-Benz SLS AMG

2.9L Whipple · 9–11 psi · 93 octane · No cams

662.2 WHP

567.3 WTQ lb-ft · Gains: +64.9 HP / +17.4 lb-ft

Mercedes-Benz SLS AMG: baseline and recorded result comparison; STD correction; Smoothing 5. BoostedJunkie watermark.View setup & original chart →

BJG-DYNO-0027

Mercedes-Benz AMG CL63

Intake + downpipes · 93 octane · Methanol injection

652.6 WHP

776.4 WTQ lb-ft · Gains: +144.2 HP / +224.1 lb-ft

Mercedes-Benz AMG CL63: baseline and recorded result comparison; STD correction; Smoothing 5. BoostedJunkie watermark.View setup & original chart →

BJG-DYNO-0032

2009 Mercedes-Benz AMG SL63

2.3L Whipple · 13 psi · 93 octane

632.7 WHP

592.6 WTQ lb-ft · Recorded result · Baseline not supplied

2009 Mercedes-Benz AMG SL63: single recorded dyno run; STD correction; Smoothing 5. BoostedJunkie watermark.View setup & original chart →

BJG-DYNO-0031

Mercedes-Benz SL600

Tuned baseline · 65 turbos · Methanol injection

570.3 WHP

667.0 WTQ lb-ft · Gains: +93.3 HP / +77.2 lb-ft

Mercedes-Benz SL600: baseline and recorded result comparison; STD correction; Smoothing 5. BoostedJunkie watermark.View setup & original chart →

BJG-DYNO-0026

2016 Mercedes-Benz AMG GT S

Downpipes + intake · BJG tune · 93 octane

555.0 WHP

510.5 WTQ lb-ft · Gains: +89.8 HP / +24.4 lb-ft

2016 Mercedes-Benz AMG GT S: baseline and recorded result comparison; STD correction; Smoothing 5. BoostedJunkie watermark.View setup & original chart →

BJG-DYNO-0025

2018 Mercedes-Benz AMG GT

Downpipes · BJG 93 octane · Alternate torque run

542.7 WHP

594.6 WTQ lb-ft · Gains: +98.9 HP / +173.5 lb-ft

2018 Mercedes-Benz AMG GT: baseline and recorded result comparison; STD correction; Smoothing 5. BoostedJunkie watermark.View setup & original chart →

BJG-DYNO-0029

2009 Mercedes-Benz AMG E63

93 octane · BJG nitrous tune · 100-shot comparison

538.5 WHP

543.0 WTQ lb-ft · Gains: +101.6 HP / +138.8 lb-ft

2009 Mercedes-Benz AMG E63: baseline and recorded result comparison; STD correction; Smoothing 5. BoostedJunkie watermark.View setup & original chart →

Parts for this platform

From the garage

Green Mercedes-AMG GT beside a red-and-black Audi R8 outside the red BoostedJunkie Garage workshop.
Mercedes-AMG GT & Audi R8
Black Mercedes-Benz G-Class on the checkered floor under hexagonal lights at BoostedJunkie Garage.
Mercedes-Benz G-Class

Before your visit

What details do you need about my Mercedes-AMG?

Send the year, model, engine, mileage, modifications, fuel and what you want to solve or build.

Can you check the car before adding power?

Yes. Book a BJG Health Check so we can look over your car before planning loaded dyno runs.

Does every result include a measured gain?

We only show a gain when we measured the car before and after. If we only have a final run, we show that result on its own.

How do I confirm service or installation?

Tell us what you drive and what you want done. We’ll check what fits, talk through the work and confirm an available appointment.

Where is the garage?

1325 Expressway 83, Peñitas, TX 78576. Monday–Friday, 9:00 AM–6:00 PM.

Plan your project

Financing available. Subject to approval.

Explore payment options →

Service Inquiries

Tell Us About Your Vehicle

We’ll contact you at the phone number you provide. Email is optional.