AMS had a tune out for the 2.0 liter M133 turbo I4 under the hood of the CLA45 and GLA45 AMG models for a little while now but they never posted a dyno graph. Well, we finally get a graph but unfortunately it is in crank output. Why?

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Show us the numbers at the wheels AMS. We know the tune works well as AMS holds the stock M133 turbo 1/4 mile record. With supplemental bolt on modifications they managed an 11.486 @ 117.44.

The tune with their downpipe plus a filter will add 128 lb-ft of torque and 53 horsepower to your M133:

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The majority of the gains come down low around 2500 rpm as there is a massive torque increase. At 3100 rpm the car is approaching 500 lb-ft of torque at the crank. It starts to drop around 4600 rpm but peak horsepower is held fairly well until redline.

Bottom line? The tune is a night an day difference over stock.