Ok, so we all know how the STS builds boost faster when all the exhaust pipes and turbo housing are good and hot. So I decided to try something last night. A couple of minutes before it was my turn to go in the staging lanes, I used the bidirectional controls to command 11:1 fuel and 6* of timing while just sitting there (swich it back before I made a ran). It runs really rough , but it's dumping some REALLY hot exhaust gases in to the pipes heating them up quickly. Help me launch at 3300rpm (on a 22-2400 rpm DACCO remain TB stall) and 8 psi of boost, which netted me a 1.88 60' time

 

Very nice, I sit in the staging lanes, building boost with the two step. I build about 5 psi and let off. I do this twice and then run. The people around me look at me like I am crazy. My blow off sounds like a drowning rooster. LOL

 

That sound pretty cool!
How did you figure out about the AFR and *6 of timing?

i can never keep this right but is 11:1 rich or lean?
Since 14.7:1 is the ideal AFR, shouldnt 11:1 be lean? that would be 11parts of air to 1 part of fuel? less air?

 

I just took a stab at the numbers, but It seems to work. 11:1 is rich. Less air= more fuel= rich

 

Ya, I know what you mean, I do one dry hop in 4 wheel drive trying to boost at much as I can and build some heat in the pipes. Some people ask me why I try to do a burnout when my truck won't spin the tires

 

Next time out try -5* and maybe 10.5:1 or even 10:1

The old covair set used to wire up switches to "bog" the timing to heat everything up and build boost. A lot of 'em even launched that way and then threw the switch off as soon as they were spooled up. I've been trying to figure out a one switch deal with the truck, but can only come up with mangling a valet mode tune.

 

1.88 60ft is that good for your truck? I have been looking at switching over to turbo set up, but that seems a little bit weak on the 60ft.?We cut low 1.83's, and a best of 1.79 with a p1sc making 4 psi out of the gate? I'm not trying to be a dick, just asking.

 

What kind of vehicle???

I have a 5500lbs truck and only a 293ci motor, I would say it pretty good. That's a lot of weight to get rollin with a little *** motor.

 

escalade on 24's with a 6.0l. I'm not saying it's bad. I just haven't seen any other post. How does this compare to your other 60ft. times?

 

BIG difference on low end torque of a 6l and a 4.8 (71ci). The 4.8 has a LOT shorter stroke. Best 60's before where in the 2.0+ range with leaving around 4 psi of boost. Ran a new best Friday night with a 13.47@100.7