Relocating MAF

[BlOody_BoOger]

Im working on a custom build currently the set up has the mass air flow sensor sitting pre-turbo and with the new set up I will need to relocate the sensor to sit post-turbo. My question is can I continue to run on the current tune even though the MAF is now in a different location. Or will I need a new tune before going full throttle again.

Sent from my GM1915 using Tapatalk

[tomm.brz]

will be similar but still requires a maf scaling
also, with a turbo you shouldp probably take advance of hybrid speed density and not use maf at all during full throttle

[BlOody_BoOger]

Originally Posted by tomm.brz

will be similar but still requires a maf scaling
also, with a turbo you shouldp probably take advance of hybrid speed density and not use maf at all during full throttle

I don't know what that means I'm not a tuner I just want to be sure that I can still boost despite moving the sensor.

Sent from my GM1915 using Tapatalk

[tomm.brz]

you certanly want your tuner to tune it again after you change the maf from Draw through to Blow through

or at least ask him, he did the tune

[BlOody_BoOger]

Originally Posted by tomm.brz

you certanly want your tuner to tune it again after you change the maf from Draw through to Blow through

or at least ask him, he did the tune

Currently its on a shelf tune. But I will be getting the car tuned hopefully soon. I guess in the meantime I'll just have to drive it easy.

Sent from my GM1915 using Tapatalk

[solidsnake11]

Originally Posted by BlOody_BoOger

I guess in the meantime I'll just have to drive it easy.

Sent from my GM1915 using Tapatalk

I have had these thoughts, then the next thing I know I'm rebuilding the engine.

[tomm.brz]

if he stays out of boost and wot he shoulfn t have any problem
anyway in open loop turbo benefits so much from speed density and then maf position is irrelevant

best way would be have your tuner ntroduce and scale speed density while your maf is in old position pre charger and then switch position

[solidsnake11]

Originally Posted by tomm.brz

if he stays out of boost and wot he shoulfn t have any problem
anyway in open loop turbo benefits so much from speed density and then maf position is irrelevant

best way would be have your tuner ntroduce and scale speed density while your maf is in old position pre charger and then switch position

True.
That what I was saying, I will say "If I drive it easy" and then I'm wide open, full boost and then cabin fills up with blow by smoke.

[tomm.brz]

lol,
i did it too, the smoke in cabin in the worst experience ever

[steve99]

just be aware that the MAF sensor is also the intake air temp sensor, so chaging it from pre to post turbo will not only likely chage its maf scaling but also the measured intake air temps will be vastly different pre to post turbo

[BlOody_BoOger]

Originally Posted by steve99

just be aware that the MAF sensor is also the intake air temp sensor, so chaging it from pre to post turbo will not only likely chage its maf scaling but also the measured intake air temps will be vastly different pre to post turbo

The set up i plan on having will have a bypass valve that sits right before the throttle body. This bypass valve will allow me to have an extra intake pipe so that when I'm not boosting the car can freely suck in air with no restriction. So not untill I get the car tuned would I have to worry about the charged temps affecting the MAF. But I will have to worry about the location since it will sit that much closer to the throttle body.

Sent from my GM1915 using Tapatalk

[steve99]

Originally Posted by BlOody_BoOger

The set up i plan on having will have a bypass valve that sits right before the throttle body. This bypass valve will allow me to have an extra intake pipe so that when I'm not boosting the car can freely suck in air with no restriction. So not untill I get the car tuned would I have to worry about the charged temps affecting the MAF. But I will have to worry about the location since it will sit that much closer to the throttle body.

Sent from my GM1915 using Tapatalk

intake temps wont be a huge issue to get car running,