Turbo

[petetown]

Hi I'm running a push turbo and wondering where guys mount the a/f sensor there isn't a lot of room after the turbo I have mounted it on the muffler right after the turbo since I was told it should go after the turbo would this cause any issues with lean readings being so close to the exit where the atmosphere is?

 

[nightrunner06]

it should go before the turbo, i have mine mounts on the pipe before the turbo , off to the left side of the pipe. i also cut a hole on the shroud for the sensor to go through.




FYI , dont place the sensor where your seat brackets mount to the shroud.

 

[petetown]

So would mounting after the turbo cause a lean reading?

 

[ghost rider]

So would mounting after the turbo cause a lean reading?

No that's where you want to mount it ... After the turbo but before the muffler.
Generally on the down pipe close to the turbo but away from the heat.. I'm not savvy with your particular set up but that's The general rule for any turbo/ supercharger application.

 

[petetown]

So the a/f ratio at idle was 14.5 maybe bit higher and cruising same deal 14ish then started bouncing down to 12.5 I just put in a new sensor what else then wot same deal will go down to 12 sometimes I'm just not sure what to check ! Plugs look good I'm lost.

 

[ghost rider]

So the a/f ratio at idle was 14.5 maybe bit higher and cruising same deal 14ish then started bouncing down to 12.5 I just put in a new sensor what else then wot same deal will go down to 12 sometimes I'm just not sure what to check ! Plugs look good I'm lost.

Your AFR numbers are pretty good from what I've been told.... In fact right now they are better than mine.
Look at some of the current AFR posts and you will get some good info

Barry

 

[rxrider]

petetown - what sled, please add as much info on the sled as possible, makes it's easier for us to give advice?

My rule of thumb for AFRs
Idle: 14.0-14.5 (on the Apex some like it in the 12s)
Engagement: 13.5
0 lbs boost: 13.0
5 lbs boost: 12.5
10 lbs and up: 11.8-12.0

Depending on boost Level 12.0 is pretty Close.

BTW - please add Your location to Your user profile, site requirement.

rxrider
TY management team