Hello, what can cause a performance drop in M3 e46? I bought M3 recently and I was measuring performance and had only 290 hp and 299 Nm, what could it be? the torque was very weak from the lower speed, probably Vanos problem. but did it also reduce power? the car has no oil consumption.
Vanos, weak fuel delivery, bad spark, bad fuel, poor reading sensors (maf, o2), many things.
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I believe 275 - 290 BHP is what you can expect from a stock S54. Of course dynos vary... what were you expecting? Has the output changed since you purchased the car?
04M3 TiAg 69k slick-top 3 pedal
99M3 Cosmos 61k S50B32 euro 6Spd
88M3 AW 43k miles Project FS
WTB: 3.5" Eurosport/Conforti CAI
The basic power is 252kw / 343PS. I have 213kw / 290hp. Yesterday I changed Vanos. I feel the car is stronger at medium speeds.
212whp :/ this is problem
Check this site.
04M3 TiAg 69k slick-top 3 pedal
99M3 Cosmos 61k S50B32 euro 6Spd
88M3 AW 43k miles Project FS
WTB: 3.5" Eurosport/Conforti CAI
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