| better than AMS and I personally refuse to deal with them any further. It's a shame that for certain parts, there isn't much choice but to use their brand. But then, I purchase from a reputable vendor. Z1 product "testing" is equivalent of using paying customers as guinea pigs and when they come out with a rectified part or V2, they don't own up to replacing it for customers free of cost. Examples included silicone lines that leak oil, throttle bodies that were incorrectly made, etc. In my case, they wanted me to ship the hose I purchased back to them at my cost and then ship me again at my cost the supposed rectified part. It was cheaper for me to buy the OEM part which I know won't leak. Then, when they were told I bought the part originally from ZTune in Vancouver, whom had this point closed up shop, I was left hanging. Every time I emailed Z1, I was given a different story. I guess the marginal part was at least they weren't rude over email like AMS, but no resolution to the problem.
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