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| Torza80 | 
				
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							just wondering what does the wide-band controller do on the J3 chips what is the purpose of it. 
				I have been thinking of buying a j3 chip and programer and programing the chip all myself. Just wondering with is the purpose of the controller and what it does and how it helps tune my car. Can i use just a AFR gauge. Cheers for your help  | 
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| bry40l | 
				
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							a wideband sensor and controller tell you air fuel ratios						
						
						
								
							 
				
 _________________ BF XR6  | 
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| efxr6wagon | 
				
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							Without a wideband sensor and controller, you cannot know how rich or lean you are running.  The factory narrowband sensor can tell you only about 14.5-14.8 AFR, maybe a little more.  An AFR of 11 will read the same as an AFR of 14 - not much good for tuning.  Wideband typically registers AFR range of at least 10 to 18.						
						
						
								
							 
				
 _________________ 95 EF XR6 wagon, 17" FTRs, DBA rotors, KYB/Koni, AU bottom end, ported EF head, backcut valves, SS Inductions, Territory intake, 10.2 CR, Auckland 1258 cam, vernier gear, PH4480 headers, no cat, Tickford 2.5", 2800rpm stall, J3 chip  | 
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