Hi, I upgraded the exhaust, air filter, and chipped it, then I done a 15% pulley upgrade and every time I accelerate hard it feels like the engine jumps and then I get the traction control and service engine soon light come on. I have reset the lights and it continues do do this ever since the pulley upgrade, can anyone tell me how to rectify this, thanks Mark.

I have a R53 Cooper s

 

Have the engine light scanned and get the root cause.
Check the engine mounts they might be loose damaged.

 

Hi,

I think I can help you out with your issues. If you can bring your mini to my shop I will diagnose the problems you have and help you get your mini running strong. I am BMW/MINI Master Certified, I worked at the Dealer for 7 years and now I have a shop and I specialize in Mini and BMW. If you want to come to my shop, I am located in Mission Viejo. Please make an appointment with me. My cell number is 480-580-8501 or you can email me at witte_ryan@yahoo.com.

Thanks, Ryan