Quote:
Originally Posted by Gibby1113
So either hfc is gonna throw off a light? Sorry I'm not too familiar w/ codes and stuff but I wanna get some hfc. I heard that if you get o2 sensor extensors that there won't be a light. Did you have to get a tune?
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Yes they will cause the car to lean out below threshold value. You qill need a tune after you get them installed. The bing extension does not work I wasted $25on them from z1 and it didnt work.
I got my tune done at stillen. Sammy there did a good job tuning my car. If you plan on doing other mods buy them all amd do one install and the immediate tune. I got random multiple cylinder misfire due to the car leaning out so far. Hope this helps.