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View Full Version : Fixed a vacuum leak, now 10:1 AFR at idle


WA_Sileighty
08-12-2009, 12:34 AM
So was tinkering in the engine bay the other day, noticed one of my lines going to the charcoal canister was not hooked up. After connecting it, I had to relearn my idle (it had been quite high for a long time). Throttle response and idle are pretty rock solid now. Issue is that my air fuel ratio sits at 10:1 (maybe lower becuase the UEGO doesnt go lower than that). A perk is my car actually holds boost now, but am curious if i need to have my map re-tuned now because of this.

redtop sr
2871 .64
740cc injectors
z32 mafs
emanage ultimate

now would prefer to keep the emanage hate to a minimum, i am well aware it isn't the most beloved system on the boards. It has however worked fantastic since i first put everything together. The car only did 280whp at 14psi last summer when it was tuned. I am failry posotive that this line was off when it was tuned just based on how it has idled since then. He couldnt get more pressure out of it without crazy spikes (probably because of the vacuum line)

any help would be greatly appriciated, and yea, I will probably switch to a PFC if i have the funds when I do my cams in the coming months, but for now its been working great (well until now)

travis