[Supras] richness under boost

[Sean Cavanaugh]

Re: [Supras] richness under boostrx-7s pretty much ALWAYS have a flamefront. heres a video of a pulled 13b motor running.
http://www.youtube.com/watch?v=Wi8Qyr3IFRg

 the heatsink adapter that Innovate makes works very well as that is what my rx-7 friends are having to use for their wideband. http://www.diyautotune.com/catalog/innovate-motorsports-hbx1-heatsink-bung-extender-p-73.html?osCsid=c6c12f9a698b80c73421e5188634b61d

If it can last on an rx-7, it will last on a supra. and yes, to properly tune a car with an o2 sensor, it has to be as close to engine as possible. hardcore way would be to run one on each exhaust runner right as it enters the manifold. Ive even seen some people fit one in the manifold BEFORE the turbo in the collector area.

another thing to note, the LC-1 isnt exactly the best wideband unit either. friend has had to have his swapped at least 3 times (the controller part, not the sensor) for issues. Most have flipped over to using a TechEdge unit instead. its also way more compatible with aftermarket ECUs (likeMegaSquirt) that can run in full closed loop mode.

-Sean


From: Walker, Brian (Rich. Dist) 
Sent: Tuesday, November 06, 2007 9:30 AM
To: Millenia2000 at hotmail.com ; Supras at supras.com 
Subject: Re: [Supras] richness under boost


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