I run open loop year round as well. No problems here.

 

Just my .02 if your gonna get into fi whether it be turbo or suoercharger it ia best to buy either efilive or hptuners so you can keep an eye on things.

 

I've got about $5k invested in HPTuners currently so I'm good there. I just haven't messed much with the custom boost side of tuning.

 

I havent messed with HPT much at all. But ive always tuned mine with EFI Live in open loop speed density when it was turboed for several years and now N/A. Its been from 10* to 110* ambient and never had a problem. Theres tables in there to adjust fueling for IAT changes.

 

If you've ever touched a VE table, you're already familiar with the process. The key is to make sure you're starting out rich, and lean it out in small increments. Don't try to go in big steps because you will over-shoot & be lean.

 

HPTuners has all those table also. I just like having the extra insurance that closed loop offers.


So where does everyone run there wideband? Pre-turbo or post-turbo in the down pipe. I'd guess post would get a better mix of exhaust gasses but how at the outlet temps? Or is it run a little farther away to help combat that?

 

some people see closed loop as insurance offered, some see it as issues offered since goind olsd with my truck the street manors have improved big time.

 

Yeah I can see that side of it on the really radical setups. I do remember my GTO ran better at times in open loop. I guess a dedicated wideband is in order then.

I am leaning more toward the turbo. For the price of the Maggie, I can build a really nice turbo setup and swap my trans to a 4L80E to handle all of the new found power.