DIYEFI.org Forum

Harry, econtrons, diyhansen, how many usernames do you need? You're clogging up the database man! If you register a fourth one I will delete all of your accounts, clear? For the record, both of Harry193's posts were invisible until now, so Alan didn't have the privilege of reading the first one bef...

The most important reason that Bosch upgraded the LSU 4.2 to LSU 4.9 is that LSU4.2 has a potential quality problem: susceptible to contaminations of reference air cell, which is called CSD (characteristic shift down). Once the reference air cell is contaminated, the sensor signal is no way accurate...

Since 2007 or earlier, all OEMs in the world start to use LSU 4.9 on their gasoline vehicles. It's funny to see that there are still people trying to tell Bosch:"Hey, I know your sensor better than you! LSU4.2 is better than LSU4.9..." In fact, LSU 4.2 is only sold in after-market now, no ...

For this reason , almost all wide-bands are really only useful for measuring steady-state AFR. i.e. constant speed / constant load. Right there! after many long posts trying to tell people how fast the LC-1 is or how fast LM-2 is, now you are telling people, wideband controllers only work for stead...