Race gas and O2s

[galoush]

I was fooling around with my double fuel system and using VP racing c-16 gas 117 octane with 6 grams of lead . The car coded 13 for the O2 . Im sure my sensor is old and the gas killed it but i was wondering from and race gas users the life exp on a new O2 with this gas . The car ran fine i cleared the computer after each track run but my scanmaster readings on milivolts were all screwed up no knock though.

 

[Jimn8or]

I dedicate a day to a new O2 sensor. 5-6 runs on C-16 and the readings have consistantly gone waaaaaaay low afterwards. Some guys have said/experienced a single run on an unheated O2 sensor running C-16. Think of C-16 as being the fat kid...in a candy store.
Jim

 

[galoush]

O2 and race gas

Hmmmm , Ok any word on the heated , ive heard some talk about an impala sensor ( is the thread the same as a Gn one?, size etc) anyway My understanding is at W.O.T the O2 is not here or there but everyday driving well that is going to be another mater . Any ideas out there? Just curious what do guy with these mega $$$$ widebands do when they run race gas , just bite the cost?

 

[c&cgn]

Apparantly the wideband O2's last alot longer than the regular heated O2's. I don't know if they actually do or not though. Alot of guys use the Delco heated O2 part# AFS-74. It does last a little longer than what a non-heated does but don't count on it lasting a whole lot longer. I have found that comparing it to EGT's, it does not take long for the readings on the heated sensor to become skewed.

 

[Drthv8r]

All I run in my GN is Cam-11. I run a heated 02 sensor and it seems to hold up very well.

 

[buickboy]

I can lend some info. i installed a new GM AFS-20 single wire. Had Phillips 114 leaded in the tank. O2's right on the money first 4 passes in the 1/8 mile. Went to 1/4. Did 4 passes and on the 5 pass check engine came on, and o2's died, car laid down big time. My experiece is around 8-10 passes and its throw it away at $27 a pop.
Mitch

 

[BLACK6PACK]

Yep, 4-5 passes and about 5-10 miles from the track my car would throw a code. Now have the Max Effort and don't have to worry about it.

 

[OldGrayII]

Originally posted by buickboy
$27 a pop.
Mitch

Try ~39-42 dollars a pop (dealer +10%)!!!! The ONLY way you can get them at 27dollars is to buy 3 for 66(If they still offer it!!) From Modern Muscle (Ramchargers) = 22 + Shipping = ~26-27 dollars a pop!! I'm talking Delco's!!!

 

[BLACK6PACK]

The 3 packs I got from Ramchargers were Delcos.

 

[WarpSpeed]

So, what happens if you take the O2 sensor out and plug the hole while racing? At WOT the O2 is ignored right?

 

[azgn]

that's right, but at anything less than WOT (like during spool up) you'll not have a good situation.....

 

[WarpSpeed]

right. Suppose the sensor was plugged in, but tied to the manifold or something out of the way. Motor'd run a little rich. How long during spoolup is it until PE mode?

However, is it possible the ecm won't go to closed loop without a hot O2 sensor?

 

[azgn]

open loop means no 02 sensor input...you would be in open loop all the time and the car will run badly unless at WOT