Don't rely on ECS Tuning application guide Based upon website guidance, I ordered an auxiliary input wiring harness for my 2003 Mercedes C240. I received it, decided to do some online verification before opening the package. I learned this harness wasn't compatible with my car's wiring. After a lot of hassles I was authorized to return it. I paid shipping both ways for a part incorrect for my car, despite the website claim it would work.

My goto source for all my Performance… My goto source for all my Performance needs for my 2018 S4. From Brakes to Oil kits and Performance Tunes they have everything you need at Great prices and Fast Shipping.

Garbage parts Bad customer service Garbage parts. Defective and cheap spoiler. Looks like junk on the vehicle. If your past the return window good luck getting a replacement! Their lifetime warranty program is JOKE. You basically have to pay for the defective part a 2nd time to replace it and all they do when they get the part back is give you a in store credit. I will NEVER USE THIS COMPANY AGAIN!

ECS is my go to for anything BMW ECS is my go to for anything BMW. The parts are generally reasonably priced, some great deals come around, and you can get some really quality products. Their staff is ALWAYS helpful with questions and guidance. Never been steered wrong. I get parts for my 1985 535i, 2007 Z4MC, 2007 X3 3.0si, and the 2014 X5 xDrive35i - so their continued support of old and new cars is really important to me.

How do you get to talk to a real person? UPDATE! Parts arrived in a timely manner and were well packaged. Unfortunately, the exhaust support, which is rubber, was already cracked and broken. Haven't called to replace it yet due to having to buy the replacement and receive credit due to it being a "lifetime warranty part". Just tried to call to straighten this out before leaving a review,but it tells me "how to do a return online" Need to speak to a person, not a cheery, robotic voice that tells me nothing useful! UPDATE: Heard from ECS and they are sending out a replacement part. Throws off the timing of the work a bit, but they made good. Stars updated.