04-06-2013, 04:44 PM
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#3
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meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: Understanding GM ecu operation?
Quote:
Originally Posted by OKGMC4
Anyone that is familiar with tuning may know...
3. Is it better to run with a MAF or without?
IMO on anything besides a higher power forced induction setup, there isn't much of a reason to run without it (speed density tune). When you start to go past the ability of the MAF and make multiple atmospheres, the SD tune is needed. It allows you to develop the "most" power under the circumstances under which it was tuned....this means that tuning a car for the most power in WI might yield drastically different results in southern AL where the temp and density is going to be drastically different, because you've removed the piece of equipment that used to make the adjusments. Just unplugging the MAF on your regular non-sd tune won't improve anything.
4. Is it true that even something as simple as an air intake could require adjustment?
Theoretically if you were building vehicles to just dyno for max power, yes it could need a change, but realistically that isn't really the case. The changes from a cai are well within the ability of the MAF and PCM to compensate with fuel and timing. [/COLOR]
Also, in the 30 minutes I drove with no MAF plugged in, I recieved no check engine light. Shouldn't that have set off an alarm?
My CEL light didn't work when I first did my swap....you never get a CEL if the light doesn't work
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meow in italic red
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING 
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