Focaljet - Ford Focus Forums - View Single Post - Concerns with my header and lack of an O2 sensor

**pitchblack_focus** · 06-30-2008, 02:56 PM

best bet is to get the xcal and 87 tune if you are concerned with gas prices. From what I hear the 87 tune is just to control your mods & FS makes no claims to HP gains with that tune. It will be a secondary tune though so IF gas ever does drop you can put in some 91 reflash and have the HP gains from the 91 tune.

Someone, please correct me if I'm wrong

06-30-2008, 02:56 PM	#7
pitchblack_focus Senior TEAM Member Join Date: Aug 2003 Location: roaming Ok Posts: 1,351	Re: Concerns with my header and lack of an O2 sensor best bet is to get the xcal and 87 tune if you are concerned with gas prices. From what I hear the 87 tune is just to control your mods & FS makes no claims to HP gains with that tune. It will be a secondary tune though so IF gas ever does drop you can put in some 91 reflash and have the HP gains from the 91 tune. Someone, please correct me if I'm wrong