Chassis Reinforcement Kit for E46 REAR | 323 325 328 330 M3 relfash Many of you have increased

Many of you have increased the performance of the S55 which quickly overwhelms the stock cooler leading to heat soak and higher intake air temperatures which triggers the ECU to downgrade the performance until cooler air returns

Check Out The Difference Below:

The dyno chart shows an increase of 18 whp using the Active catted downpipe and signature exhaust with the stock tune (just FYI our stage 1 and stage 2 tunes are showing whp increases of 53 and 94 using the catted down pipe and signature exhaust)

The Active AFlow Catalytic Converters are rated for engines putting out up to 950 horsepower while maintaining a high flow capacity

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Chassis Reinforcement Kit for E46 REAR | 323 325 328 330 M3 relfash Many of you have increasedIf you own a E46 NM or E46 M3 and you are experiencing unfamiliar sounds coming from the rear of your BMW whenever the throttle is being applied, then chances are that your rear subframe sheet metal may already been torn away and is the cause of these noises. The whole rear subframe of the BMW as well as the differential and rear suspension are all secured by bolts threaded into the sheet metal body. It is the splitting and cracking away of the sheet