Pros and cons of running mafless. Ls1 fj62

[on2it]

Hi team, my conversion is almost complete however ive been asked whether I want to run mafless. infact the recomendation and most of the work/tuning has been done with mafless route.
I'm running my stock airbox and may run a snorkel shortly. I do intend to go offroad on expeditions both high country and varying tempratures (which is why im concerned going mafless).

What are the pros and cons of running mafless?
What should i keep an eye on or insist on if going mafless?


custom headers, custom exhaust.

 

[on2it]

Anyone at all running mafless?

 

[Honest Don]

The ls1 turbo guys usually run on speed density (mafless). The difference is that speed density calculates airflow, while MAF measures it. If you're already tuning for speed density, you should be ok.

 

[Honest Don]

Oh, and ask whoever is doing the tuning about the drastic elevation changes. you may need to go on a roadtrip with a laptop/wideband. temp shouldn't be a huge deal to work out

 

[papagyo]

On2it,

My conversion is mafless, i have had done since the end of january. I live at 4200ft and routinely drive to 8500 plus with no issues. My tune came with the engine (bd turnkey) and he has a pretty good explanation on his site why he goes thid route. I have mine from manifold to inline airbox(spectre) and then snorkel no troubles with that so far. Oh yeah this is a 2004 5.3 vortec.

Brian

 

[on2it]

Brilliant thanks team!

 

[on2it]

On2it,

My conversion is mafless, i have had done since the end of january. I live at 4200ft and routinely drive to 8500 plus with no issues. My tune came with the engine (bd turnkey) and he has a pretty good explanation on his site why he goes thid route. I have mine from manifold to inline airbox(spectre) and then snorkel no troubles with that so far. Oh yeah this is a 2004 5.3 vortec.

Brian

Brian, thanks so much for directing me to his website, very informative. Much appreciated.