power loss due to feedback loop
power loss due to feedback loop
according to technosquare...the feedback loop in our stock ecu will cause power loss if we install intake and exhaust? is this true? I'm also interested in the technosquare ecu.
"Changed air intake system
One of the major problems on this car was a feedback system that compensates for modifications. The oxygen sensors detects fuel mixture and will tell the ECU to richen up or lean out the mixture. This correction factor was way too wide, so some performance components upgrades (intake, exhaust) would actually result in a loss of HP below stock!
We adjusted the correction factor to reduce that compensation reaction. Our tests showed consistent power and torque improvement following installation of an intake system."
-This is directly from the technosquare website
One of the major problems on this car was a feedback system that compensates for modifications. The oxygen sensors detects fuel mixture and will tell the ECU to richen up or lean out the mixture. This correction factor was way too wide, so some performance components upgrades (intake, exhaust) would actually result in a loss of HP below stock!
We adjusted the correction factor to reduce that compensation reaction. Our tests showed consistent power and torque improvement following installation of an intake system."
-This is directly from the technosquare website
That could simply be over exaggerating a small dip in the mid RPM range that they smoothed out.
Honestly, it doesn't make sense either, since they can't change closed loop maps. The only maps they adjust are open-loop maps, which the ECU doesn't care about A/F ratio from the 02-sensor feedback.
Honestly, it doesn't make sense either, since they can't change closed loop maps. The only maps they adjust are open-loop maps, which the ECU doesn't care about A/F ratio from the 02-sensor feedback.
Originally Posted by Shogunsc4
"Changed air intake system
One of the major problems on this car was a feedback system that compensates for modifications. The oxygen sensors detects fuel mixture and will tell the ECU to richen up or lean out the mixture. This correction factor was way too wide, so some performance components upgrades (intake, exhaust) would actually result in a loss of HP below stock!
We adjusted the correction factor to reduce that compensation reaction. Our tests showed consistent power and torque improvement following installation of an intake system."
-This is directly from the technosquare website
One of the major problems on this car was a feedback system that compensates for modifications. The oxygen sensors detects fuel mixture and will tell the ECU to richen up or lean out the mixture. This correction factor was way too wide, so some performance components upgrades (intake, exhaust) would actually result in a loss of HP below stock!
We adjusted the correction factor to reduce that compensation reaction. Our tests showed consistent power and torque improvement following installation of an intake system."
-This is directly from the technosquare website
However, the ECU does monitor MAF voltage at open-loop, so a mod that increases airflow could cause the ECU to react by richening the A/F, thus decreasing power.
Still, that has NOTHING to do with "The oxygen sensors detects fuel mixture and will tell the ECU to richen up or lean out the mixture.", so I think they are mistaken on that statement.
Still, that has NOTHING to do with "The oxygen sensors detects fuel mixture and will tell the ECU to richen up or lean out the mixture.", so I think they are mistaken on that statement.
Since you have an auto, I'd say yes on the timing advance. Closed loop is unaffected by the TS ECU, so you'd still benefit.
Whether or not, TS changes YOUR current ECU software or simply copies the guinea pigs ECU code IS a good question. Any TSBs may be lost if they are simply just flashing your ECU with someone elses stock ECU code with tweaks to the fuel/timing maps.
Whether or not, TS changes YOUR current ECU software or simply copies the guinea pigs ECU code IS a good question. Any TSBs may be lost if they are simply just flashing your ECU with someone elses stock ECU code with tweaks to the fuel/timing maps.
Originally Posted by Shogunsc4
so...if i'm gonna buy the technosquare ecu...should i still bring my ride into the dealer or the lack of power tsb and to get the timing advanced?
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MannyMonroe
7th Generation Maxima (2009-2015)
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Sep 25, 2015 12:38 PM