The 4-into-1 header was well worth the time it took to install because it posted the highest peak power figures of the afternoon. Our 4-into-1-fitted B16A produced 204 hp at 7,700 rpm and 143 lb ...

Ten-Into-One Headers Sound Like Nothing You Have Ever Heard. Yes, all of this is happening in the engine bay of an E46 M3. By Fred Smith Published: Oct 28, 2023 3:47 PM EDT. Save Article.

Now, it has the wildest 10-into-1 headers I’ve ever seen. While the car was originally built to be a street-style drift car with an S85 V10 from an E60 BMW M5, it sat unused for quite sometime ...