How much is good air worth?

Originally Posted by Dave Ribeiro

Scott,

I think Jeff,Jimmy Jr. & Dave were right on two tenths .. As you know there are many other factors that enter in this discussion .. But, their est. was right on, no sub for experience ... Good Luck testing & write it all down !!

Yep, they were right on it! Here we are on Friday ...


After our last TNT pass Friday night the Check Engine Light came on and the codes indicated the oxygen sensors had gone out. We packed it up and came home and will replace those this week.

Scott

[Ed Wright]

Any good tuner cam make the O2 sensors have no effect on WOT performance. Or, you could have just unplugged them to finish the weekend.

[Chad Rhodes]

Originally Posted by Ed Wright

Any good tuner cam make the O2 sensors have no effect on WOT performance. Or, you could have just unplugged them to finish the weekend.

Or gone to the auto parts and just changed em. It's not that hard

[Rat Raceway]

Look into getting a speed density tune like Ed said. Hands down the best setup for racing applications. No reason to even have the O2's on board IMO.

I would kill to run in air like that.

Good run!

[art leong]

Originally Posted by Rat Raceway

Look into getting a speed density tune like Ed said. Hands down the best setup for racing applications. No reason to even have the O2's on board IMO.

I would kill to run in air like that.

Good run!

Doesn't speed density mean closed loop? Then it would need the sensors.
Alfa N is open loop ( I think ) Sensors are just for data logging.

[Ed Wright]

MAF sensor mode, Speed Density, and AlphaN can all be open or closed loop. With a Pure Stocker, I would certainly leave the MAF on it. I don't think it would be legal to remove it, would it. At least the original Pure Stock rules would not allow it. This new "pure stock " ain't really purely stock. May be legal now? I don't know.
Anyway, if you know how, you can stop long term fuel trims from effecting WOT fueling.

Do you guys run open headers? You most certainly don't want closed loop, with a factory computer, with open headers.

Thanks guys for your comments.

No Ed ... open headers are illegal. We can run the OEM exhaust manifolds open with no mufflers but if you run headers you must run mufflers. We run 1 & 7/8" American Racing Headers, an off-road X-pipe with no cats, and GM C5 Z06 titanium cat-back mufflers.

As far as the MAF I believe that has to be present as well. When you guys talk about open and closed loop, etc. I'm not sure what you're talking about. We get our tunes from Stephen Covington in Longview, Texas at East Texas Muscle Cars. He seems very knowledgable and takes him time tuning the car on the dyno and on the street when we go. The times and consistency that the car runs have been pleasing to us.

So just buy two new ones and replace them?

Scott