Boost
September 11th, 2010, 07:57 AM
"Gen-III Gasoline Custom Operating Systems:
Speed Density
Speed Density mode is preferred by most tuners when tuning high performance engines with large camshafts or forced induction. The MAF is removed (or disabled) and the PCM is tuned using the MAP sensor instead. Unfortunately, when the MAF is disconnected the stock PCM has been designed to go into a semi-limp mode (operating from the low octane spark map only). EFILive’s Speed Density Custom Operating System restores the high-octane spark map and full adaptive spark control, when operating in speed density mode."
Does this mean that I can simply remove my MAF and the engine will run fine and smooth just use the low octane spark table only? Due to the lack of adaptive spark protection, I should do a COS anyway right? The reason I am possibly interested in eliminating the MAF is because it is somewhat of a restriction and the 3.2 liter Audi engines I work on that are Speed Density have a really cool sounding intake. Besides less intake restriction and room for more creative intake, are there any drawbacks to going MAFless? I like simplicity and weight reduction...
Speed Density
Speed Density mode is preferred by most tuners when tuning high performance engines with large camshafts or forced induction. The MAF is removed (or disabled) and the PCM is tuned using the MAP sensor instead. Unfortunately, when the MAF is disconnected the stock PCM has been designed to go into a semi-limp mode (operating from the low octane spark map only). EFILive’s Speed Density Custom Operating System restores the high-octane spark map and full adaptive spark control, when operating in speed density mode."
Does this mean that I can simply remove my MAF and the engine will run fine and smooth just use the low octane spark table only? Due to the lack of adaptive spark protection, I should do a COS anyway right? The reason I am possibly interested in eliminating the MAF is because it is somewhat of a restriction and the 3.2 liter Audi engines I work on that are Speed Density have a really cool sounding intake. Besides less intake restriction and room for more creative intake, are there any drawbacks to going MAFless? I like simplicity and weight reduction...