Yeeeeeehaw
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Joined: Feb 2003
Posts: 2,221
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From: Dallas
Yeeeeeehaw
well, got my 54/78 chip on friday, installed it yesterday and WOW! Truly makes it feel like a completely new truck. Easy install and awesome improvement. Just one question... occasionally when i am in the 78hp mode and really step on it the "service engine soon" light comes on. I looked in the manual for what this ment, and it basically said that there could be an emmision control failure. Has the happened to anyone else? Is there a problem or is the emmision crap just that sensitive? thanks
Tuned
Joined: Feb 2003
Posts: 335
Likes: 1
From: Houston, TX
Yeeeeeehaw
There are some easy solutions out there for this. There is a nifty replacement MAP sensor line with a pop-off valve and sensor port built right into it. As I understand it, the pop-off will prevent you from getting this trouble code.
