T+/Extender "Spool fuel" question(s)...

[YGETV8]

Hi,

Going to the track tomorrow night and am needing to make some last minute adjustments. In the Extender instructions for the spool fuel, it says that the "Default value is 5 which is about 13.5:1, higher numbers make the engine run richer while brake torquing to build boost." I've been "bass-ackwards" plenty of times before, but I though leaner made for faster spooling, not richer? So, IF I'm right, I would want numbers lower than 5 to lean the car out, or higher than 5?

I am guessing this is referring to the A/F of the "launch assist" feature?

Also, when idling in park and I blip the throttle, the check engine light blinks rapidly indicating the launch assist is functioning (I do have it enabled). Is this normal? I though it was just for brake torquing?

Thanks... I'll get this all figured out sometime!

 

[Mr URL]

Correct Jay.


Lower the A/F ratio the richer it is and higher the ratio the leaner it is. I think he was talking about the number settings in the chip. Higher the number the richer the launch assist fuel ratio. So lower than 5 will lean it out. Leaner should make it spool faster to a certain degree.

The check engine lights up when the launch assist comes on. I believe it's only checking for zero mph and TPS over a certain amount for it to trigger. I think mine will do the same thing but I haven't tried it in a long time.

 

[YGETV8]

Thanks Chad! I emailed Bob, too, in case he didn't see this and he pretty much said the same thing. Wish me luck! Jay

 

[YGETV8]

Here's what he wrote me, so if anybody searches on these ?s it'll be here:

<<Let me re-phrase:

"While brake torquing to build boost, this value is used to
adjust the AF ratio. The default value is 5 which is about
13.5:1, higher numbers make the engine run richer."

Leaner helps to a point, but now you can experiment.
Over-rich will slow spooling.

This mode is only active from 50% to 85% throttle when MPH
is less than 5....

Launch assist activates at 50% throttle.>>

Thanks, Guys! Jay

 

[Mr URL]

Good luck! Let us know how it goes!