Performance Upgrades for CLA45 AMG GLA45 (M133)

CLA45 / GLA45 / A45 AMG (M133) — Real Performance, Zero Gimmicks

The M133 is a monster of a 2.0T engine — but heat-soak, airflow limits, and OEM boost control leave power on the table. Upgrade cooling, boost control, airflow, and tuning to unlock consistent, repeatable performance.

  • Fitment Support Included
  • Ships Within 1 Business Day
  • 1-Year Replacement Warranty

🔥 Best Sellers

Best bang for the buck upgrades for M133 2.0 4 cyl turbo — tuning, exhaust flow, cooling, and boost control.

Stage 1 / Stage 2 M133 ECU Tune

Unlock full boost, torque, and throttle response.

View Tune

Catless M133 Downpipe

Max flow & spool. Tune required.

View Downpipe

High-Performance Heat Exchanger

Fix heat soak. Stable temps on repeated pulls.

View Heat Exchanger

M133 Turbo Blanket

Lower bay temps. Faster spool.

View Turbo Blanket

Upgraded Diverter Valve – M133

Prevents boost leak & stabilizes pressure. Recirculating (not a blow-off).

View Diverter Valve

What’s in This M133 Collection

  • Dual-Pass Intercooler — lower IAT + faster recovery.
  • Front-Mount Heat Exchanger — the primary cooling upgrade.
  • Cross-Platform AMG Heat Exchanger — CLA45/GLA45 fitment confirmed.
  • 4" Intake Kit w/ K&N — deep induction sound + improved flow.
  • K&N Drop-In Filter — simple, effective airflow bump.
  • M133 Catless Downpipe — max flow; tune required.
  • Upgraded Diverter Valve — proper boost control for tuned setups.

Diverter Valve vs Blow-Off Valve

Many owners search for a “blow off valve,” but the M133 uses a recirculating diverter valve, not an atmospheric BOV. Upgrading the DV is the correct way to maintain fueling stability and prevent boost loss on tuned setups.

Recommended Upgrade Order

  1. Cooling: Heat Exchanger → Intercooler
  2. ECU Tune: Unlock full M133 potential
  3. Airflow: Intake or Drop-In
  4. Downpipe: Requires tune
  5. Diverter Valve: Stabilize boost

CLA45 blow off valve, CLA45 diverter valve, GLA45 BOV, A45 AMG BOV, M133 DV, M133 boost control, M133 tune, CLA45 downpipe, GLA45 heat exchanger, A45 intercooler 2014 2015 2016 2017 2018 2019.