Thread: 13.8 MPG! wow....

Originally Posted by tylerbinski

I ran both for a couple months- seemed more responsive and wasnt hard to tune with wide band.

i wouldn't sell a car with SD OL wothout the buyer knowing as the tune is highly sensitive to atmospheric conditions and needs close monitoring.

Meh, my buddy recently moved to Colorado with his open loop NIC car... Works fine.

Originally Posted by darkhorizon

Meh, my buddy recently moved to Colorado with his open loop NIC car... Works fine.

I've seen comparisons of MAF and SD calcs on a V8 PCM.

It seems they were both as accurate, but the MAF had more outliers.

Flexibility of the SD tune would depend on its accuracy.

Originally Posted by matt5112

I've seen comparisons of MAF and SD calcs on a V8 PCM.

It seems they were both as accurate, but the MAF had more outliers.

Flexibility of the SD tune would depend on its accuracy.

Who is talking about speed density.... I have only heard of one guy actually trying to run his naturally asperated car on SD mode full time.

Originally Posted by darkhorizon

Who is talking about speed density.... I have only heard of one guy actually trying to run his naturally asperated car on SD mode full time.

Good point.

However I can only think of two reasons you'd want to run open loop though.

Lean cruise or by-pass MAF.

Originally Posted by matt5112

Good point.

However I can only think of two reasons you'd want to run open loop though.

Lean cruise or by-pass MAF.

You can run in sorta closed loop in SD mode though.... The few SD LSx cars I have tuned pretty much need to have a narrowband helping them out for cold/hot stuff unless you really play with dialing in the tune.... Even then I had problems.