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beepbeep beepbeep is offline
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Join Date: Jun 2001
Location: Sweden
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Originally Posted by Ben V View Post
The car is being dyno'd with an 80's posche specialist he has got the correct test gauges and equipment. He is going to get 2 boses welded in to the headers to fit wide band lambdas
An "80's Porsche specialist" should know that WBO2 sensor shouldn't be used before the turbo but fitted after the turbo. High EGT and backpressure make WBO2 sensor fail or display wrong readings if mounted in the headers.

Originally Posted by Ben V View Post
A point about the O2 sensor, I understood it was an improvement over the 930 system richening the fuelling on full throttle by lowering the fuel pressure, why would I want to remove it?

Thanks again for all your input guys
Narrow band OEM sensor does nothing to enrich the mixture on boost. It's disconnected during boost phase and cannot detect anything else besides if mixture is bellow or over lambda 1.0. It's only ised on idle and part load and modulates the frequency valve in order to keep mixture at lambda 1.0 so that catalyst can work.
Thank you for your time,

Last edited by beepbeep; 11-06-2009 at 03:58 AM..
Old 11-06-2009, 03:53 AM
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