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Onefast99gsx · 10-07-2005

Can someone tell me if A/F ratio is not directly related to running lean or rich? Does it just indicate the content of the air & fuel that is there and not the amount of air & fuel? I would richen the piss out of it and dsmlink would show like 9:1 or i lean it and go around 11:1 but knock would never go away so that's why i'm asking my question. A/F must not tell if you are lean or not like an EGT would.

For months i've struggled with my car and knock in 3rd gear after around 5500 rpms. Last night while looking at something else I saw the vacuum hose going to the stock FPR was completely disconnected. It was also pinched by the firewall area. That's why i never picked up on it during the boost leak tests. Fixed it and took it out and was merely knock free after some hard 60-90 runs.

Thanks.

10-07-2005	#1
Onefast99gsx Join Date: Sep 2004 Location: Wisconsin Posts: 1,411	Question about A/F ratios Can someone tell me if A/F ratio is not directly related to running lean or rich? Does it just indicate the content of the air & fuel that is there and not the amount of air & fuel? I would richen the piss out of it and dsmlink would show like 9:1 or i lean it and go around 11:1 but knock would never go away so that's why i'm asking my question. A/F must not tell if you are lean or not like an EGT would. For months i've struggled with my car and knock in 3rd gear after around 5500 rpms. Last night while looking at something else I saw the vacuum hose going to the stock FPR was completely disconnected. It was also pinched by the firewall area. That's why i never picked up on it during the boost leak tests. Fixed it and took it out and was merely knock free after some hard 60-90 runs. Thanks.