ya we are talking fractions of a seconed delay when it comes to dbw... But when it comes to getting the best times with a BT setup etc, fractions of a second are key. The Map sensor can sense boost/air Jeff, but it cant tell the ecu to make adjustments to fuel/timing when compensating for more or less air/boost. That is the MAF's job. MAP sensor basically just there to prevent overboosting from killing your engine... Thought youd know that???? Thats why some people that do the diode mod for the map sensor have to use a mbc to keep from running lean and killing their turbo.

FIY its not talked about a lot here, but the diode mod tricks the map/boost sensor into thinking its boosting/sensing 16 psi for example when you are actually boosting more than that, which can sometimes trigger soft limp- if the actual boost is higher than requested. If the map sensor had the ability to tell the ecu to compensate for fuel/timing when it sees over boost you would never go into soft limp and no one would have problems tuning a 2000+ with a BT . Revo has a program that disables limp mode caused by overboost on 2000+ a4's and thats one of the reasons Revo is best and most reliable for B6's+. A little overboosting isnt gunna kill your engine unless you start detonating.

 

Yup, but it doesn't really matter when you have a manual.

 

well if you just step on it without any downshifting or anything it'll matter. but like onepoint8tee said its only fractions of a second so its not really gona make a dif.

 

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