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11-03-2002, 08:20 PM | #1 | ||
*** Banned ***
Member#: 2992
Join Date: Nov 2000
Chapter/Region:
NESIC
Location: Connecticut, USA
Vehicle:02 WRX Sedan Silver |
An Important Note on WideBand A/F Sensor Placement
Bottom line: Do Not Install Wideband Sensors in Uppipe!
Yesterday I became aware that Garfield Willis, of EGOR fame, has returned from the dead, so to speak. This guy has more experience and knowledge about the NTK 5-wire sensor and its control in his big toe than all of us here in i-Club combined. He apparently started posting in the EFI332 newsletter this past July and here are some important tidbits that he has shared there. If you hope for any accuracy from the NTK 5-wire sensor in the rich region, it needs to be mounted DOWNSTREAM from the turbo. Here's an excerpt from his post entitled EBP Correction of AFR: Quote:
Quote:
EDIT: Garfield is, deep down, a Subaru nut. He want's to use Subaru engines in experimental aircraft. And he want's to develop, ultimately, his own ECU for this purpose. Although his A/F detection (EGOR) and knock/misfire detection (IONEYES) projects would be useful in all areas of motorsport, his ECU will ultimately have greatly different (i.e. simpler) requirements than any car's. But, I want to reiterate: Don't install your wideband sensor ahead of the turbo. Mount it at the top of the downpipe. Last edited by Jon [in CT]; 11-03-2002 at 09:21 PM. |
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