[Supras] richness under boost

[Jeff Mohler]

That flame you saw was gasses finding free oxygen AT the exhaust exit.
You wont have flame in the downpipe at -all- on a piston car, unless you
have serious fuel and timing isues.

On Nov 6, 2007 6:30 AM, Walker, Brian (Rich. Dist) <
Brian.Walker2 at vdot.virginia.gov> wrote:

> Sean, this brings up some good info. I understand not wanting the sensor
> in direct flame constantly as you mentioned but how will random flame
> fronts effect the sensor? I would imagine most places in the DP are
> going to see a flame fairly often. In fact this weekend at an event I
> was told the car fired a large flame out of catback at one point. I also
> recall last season when the old DP developed a hole (at the flex joint,
> behind sensor location), flames were seen under the car many times.
>
> Still seems to be reading well (same readings I always see, with no
> input changes) Sensor has been in for ~2.5 years.
> Brian
>
> Date: Mon, 5 Nov 2007 18:33:46 -0000
> From: "Sean Cavanaugh" <Millenia2000 at hotmail.com>
> Subject: Re: [Supras] richness under boost
> To: <supras at supras.com>
> Message-ID: <BAY126-DAV137B6C520834B7CFAB86DFCA880 at phx.gbl>
> Content-Type: text/plain;       charset="us-ascii"
>
> Just buy an Innovate LC-1 for 200 bucks and install it in stock O2
> sensor location. Just having a wideband in the car helps out a LOT. My
> old NA supra ran MUCH smoother just from that (used narrowband output
> for ECU and wideband output for tuning). Whoever told you not to use
> wideband O2 sensors for long periods of times must have been referring
> to old obsolete non-heated sensors. Newer 5 wire wideband sensors are
> heated and have no issues (unless you install it in an RX-7 where the
> potential flamefront directly in the exhaust flow will melt it.)
>
> -Sean
>
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