do you need to use an air/fuel ratio gauge with a vafc??

 

if you are asking this question and plan on tuning it yourself I'd recommend a professional. Yes you need a wideband gauge to see the air fuel ratio to tune for.

 

How else would you check your air/fuel ratio???

 

I won't be tuning it, i'll have a shop tune it, I didn't know if I needed to get one or if the shop has a device to do it. i've heard if guys running the vafc w/o the af gauge. just wondering if you needed one after the tune is complete

 

On a dyno using a wideband meaning you have to have a extra 02 bung installed into your exhaust system somewhere (best is just b4 the cat or in the test pipe if thats what you run)

 

Check with the shop...they may be using a sniffer at the end of the tailpipe instead of needing a bung. Its not totally neccessary to have a wideband if you are getting it pro tuned, but its just some extra security for you. Kind of like having an oil pressure gauge.

 

a dyno tuner is going to have their own wideband, if you have one already they are just going to yank it and pop theirs in your bung hole for tuning. let them do the tuning, they can weld in a bung for their sensor and just cap it off with a bolt or something so you can at your leisure install your own wideband later on...

 

thanks guys!! just what i was looking for, it will be pro-tuned, i like the idea about them welding one in and i can use it later to install one. about this oil pressure gauge...only for turbo applications right?

 

no sir , an oil pressure gauge is good for anything as is water temp and or oil temp. Knowing you have oil pressure means your engine is getting oiled as its running, and temps show you whats going on inside.