Official 0-60 & 1/4 mile thread

[Slip_Angle]

Imagine what that time would be with Kagander's tune!

 

[Toddasaurus]

Imagine what that time would be with Kagander's tune!

Or Tork tune!

 

[Slip_Angle]

^^^ True!

I filled in with 94 Octane today. 1/2 tank of gas. I'm going to run it today and then try a couple 0-60 runs tomorrow. Should be interesting to see if anything changes running a stock car with higher octane!

 

[Toddasaurus]

So this run I tried something very different from what I’ve ever done. I did my burn out to warm up the tires. Running map 7. Held 1 pound of boost in first gear. And left the car in auto. Didn’t start in first then switch to auto. I still had a very very very small amount of wheel hop but the practice I have been doing seems to be helping launch this big ole girl. And a tuned s7 was running around the 12.4-12.5 range so I’m happy with that.
I was a little scared during this run also and almost backed out cause the tail end of the car was a little squirly close to half way down the track. All in all I’m extremely happy considering my da was about 5300. Never got in another run since they had the big street outlaw cars there as well. But next time I’ll have the intercooler, snorkels, and ewg plugs for the wastegate

I'm pumped to see what times you get after those mods - especially the EWG control!

 

[Vortex951]

i was kind of not wanting to get an ecu tune but after my run last night i kinda want it more than before but if these ewg controll plugs help shifts then im hoping i wont need to

 

[TinsleyC]

Lastly, my time was done with almost a full tank of gas.

At 6 lbs a gallon, you were carrying about 80+ lbs extra...well, if you want to run it practically dry. Maybe 60 lbs over.

 

[Vortex951]

I'm pumped to see what times you get after those mods - especially the EWG control!

i just got the ewg control plug installed into the jb4 going to try and get an oil change monday morning then start putting everything on.

 

[Slip_Angle]

i just got the ewg control plug installed into the jb4 going to try and get an oil change monday morning then start putting everything on.

Oh man, so you can control boost on launch then!

 

[Vortex951]

Oh man, so you can control boost on launch then!

i dont think thats what its for really. it seems to be more so for controlling overboost and a few other thing related to boost spool which we all know is almost instant in our cars but i think its suppose to help hold more boost between shifts. i havent gotten a ton of answers on it yet but im working on that plus getting ready to test it myself

 

[Slip_Angle]

i dont think thats what its for really. it seems to be more so for controlling overboost and a few other thing related to boost spool which we all know is almost instant in our cars but i think its suppose to help hold more boost between shifts. i havent gotten a ton of answers on it yet but im working on that plus getting ready to test it myself

JB4 boost readings still seem low

Terry: Yes I think we'll be able to improve boost at the launch both in LC and brake boosting applications now with this EWG control, although our specific car is RWD and traction limited, so we'll need to recruit some AWD cars who don't mind risking breaking drive train parts.

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[Vortex951]

JB4 boost readings still seem low

Terry: Yes I think we'll be able to improve boost at the launch both in LC and brake boosting applications now with this EWG control, although our specific car is RWD and traction limited, so we'll need to recruit some AWD cars who don't mind risking breaking drive train parts.

I was actually having a private convo with Todd and sent him a pic of my log from last night. I launched with about 8 pounds of boost and to be honest after I did a decent burnout and had 18 psi for pressure in the tires it hooked really good for the most part. I did have a little amount of hop but I was also on map 7 and got the 1.89 60’. So if these help even more then I’m going to need some real drag radials ASAP haha

 

[Slip_Angle]

^^^ True!

I filled in with 94 Octane today. 1/2 tank of gas. I'm going to run it today and then try a couple 0-60 runs tomorrow. Should be interesting to see if anything changes running a stock car with higher octane!

Ok, interesting results. Best time on 94 Octane was 4.89 and I did several runs.

94 Octane = 4.89 0-60
91 Octane = 4.70 0-60
87 Octane = 4.53 0-60

So it would seem to me that the stock ECU doesn't do anything to increase power with more Octane and would only decrease ignition timing if it detected knock on say 87. Since 87 burns the fastest, it seemingly produces more power and thus a faster 0-60 time.

Not definitive but interesting.

 

[Vortex951]

Ok, interesting results. Best time on 94 Octane was 4.89 and I did several runs.

94 Octane = 4.89 0-60
91 Octane = 4.70 0-60
87 Octane = 4.53 0-60

So it would seem to me that the stock ECU doesn't do anything to increase power with more Octane and would only decrease ignition timing if it detected knock on say 87. Since 87 burns the fastest, it seemingly produces more power and thus a faster 0-60 time.

Not definitive but interesting.

That is very interesting to say the least. I’m actually puzzled. Are most of the runs done with similar variables? Time of day, temp, humidity, da, amount of gas in tank? I know it seems silly but something like 10 percent difference in humidity can make a huge difference in performance. Different temps can effect traction in big variances. Also are the all launched in the same manner? I.e. all using lc or just flooring it from an idle? Lots of people report lc is actually much slower than just flooring it.

 

[Slip_Angle]

That is very interesting to say the least. I’m actually puzzled. Are most of the runs done with similar variables? Time of day, temp, humidity, da, amount of gas in tank? I know it seems silly but something like 10 percent difference in humidity can make a huge difference in performance. Different temps can effect traction in big variances. Also are the all launched in the same manner? I.e. all using lc or just flooring it from an idle? Lots of people report lc is actually much slower than just flooring it.

No, the variables are not all the same. It's really difficult to get everything identical but with each Octane level I tried to keep the amount of gas similar and make the days/temp somewhat similar.. I also tried several methods to launch to try for the best times...

Like I said, not definitive but certainly interesting. Maybe it's in my head but 87 does actually feel the strongest..

 

[Vortex951]

No, the variables are not all the same. It's really difficult to get everything identical but with each Octane level I tried to keep the amount of gas similar and make the days/temp somewhat similar.. I also tried several methods to launch to try for the best times...

Like I said, not definitive but certainly interesting. Maybe it's in my head but 87 does actually feel the strongest..

Sounds odd but it is very possible that’s the case.

 

[FastEddie]

Sounds odd but it is very possible that’s the case.

87 octane actually has more power potential but it’s subject to detonation that’s why 91-3 octane is is lower on power having knock additives to handle the higher compression. There is more to it but basically thats it in a nut shell

Octane vs. Horsepower - Separating fact from myth in the debate over which fuel makes more power - NASA Speed News Magazine

 

[Slip_Angle]

87 octane actually has more power potential but it’s subject to detonation that’s why 91-3 octane is is lower on power having knock additives to handle the higher compression. There is more to it but basically thats it in a nut shell

Octane vs. Horsepower - Separating fact from myth in the debate over which fuel makes more power - NASA Speed News Magazine

Yeah, I'm thinking because the air is cold here the 87 does best because there is no heat soak that is more likely to result in detonation. If it were 90 out, it would likely be a different story... maybe

Good article. The moral of the story is run just the right amount of octane that produces no detonation and you should reach peak power. Any more octane and you leave power on the table.

 

[Beefer]

I found the opposite...going up in octane...things improved.

The key is that these ECU’s learn. So you cannot just increase the octane and immediately hit the car hard.

Every time the fuel octane goes up...minimum of 30 minutes of mellow driving is required. You can go different speeds...just keep the RPM’s down.

 

[Slip_Angle]

I found the opposite...going up in octane...things improved.

The key is that these ECU’s learn. So you cannot just increase the octane and immediately hit the car hard.

Every time the fuel octane goes up...minimum of 30 minutes of mellow driving is required. You can go different speeds...just keep the RPM’s down.

Did you record 0-60 times for different octane levels? I'm curious about your results. Also, what is the purpose of keeping the RPMs down when switching octane levels?

 

[Beefer]

Did you record 0-60 times for different octane levels? I'm curious about your results. Also, what is the purpose of keeping the RPMs down when switching octane levels?

I compared 93 and 99 (booster)...and I squeezed out about 0.2 quicker time. Perhaps a tiny bit less.

As for RPM’s...I just meant not to be aggressive. If you over do it before the ECU learns (and the tank is fully mixed)...you have to start all over and drive slow for another 30 minutes or so. That’s why I said to be patient the first time