So after living in the area I discovered there's a track near me and last night was test and tune.
I ran my best at 13.1 the rest were 13.3 a bit disappointed considering my mods. I've seen faster slips with just tune and drop in filter.
My runs are the lane that say Serna. (https://uploads.tapatalk-cdn.com/20180310/ab124f2e8ca542b9d9377e6ab869e540.jpg)(https://uploads.tapatalk-cdn.com/20180310/c7d1e7ab711f47bc4986cec925da4811.jpg)(https://uploads.tapatalk-cdn.com/20180310/e08db912319b489459893f4c2dd98a8c.jpg)(https://uploads.tapatalk-cdn.com/20180310/88b376440ebdd97d1570830969e74337.jpg)
Sent from my Moto Z (2) using Tapatalk
The 60' Foot times explain alot and are crucial for an overall great ET.
What tires are you running with? Tire psi lowered ?
I netted an overall Best 1.752 - 60'- times. Z :)
https://airdensityonline.com/track-results/Caprock_Motorplex/
Looks like that DA is working against you as well. Typically see such horrible DAs in Arizona or Colorado.
Quote from: ZSHO on March 10, 2018, 07:02:51 AM
The 60' Foot times explain alot and are crucial for an overall great ET.
What tires are you running with? Tire psi lowered ?
I netted an overall Best 1.752 - 60'- times. Z :)
I am running conti's dws and no I didn't lower the psi
What can I work on to lower my 60' times?
Sent from my Moto Z (2) using Tapatalk
https://www.ecoboostperformanceforum.com/index.php/topic,1239.0.html. (https://www.ecoboostperformanceforum.com/index.php/topic,1239.0.html.) Z
I was launching right between 1800 and 2000rpms. I did have long line up but I kept the engine off while sitting idle. I avoided the water trap as well. I did about everything except reducing weight, warming up the tires but I did drive an hour just to get there so I figured they were warmed up. I guess I'll just have to keep trying. Both my 13.3 runs we're in Drive and my 13.1 and 13.2were in sport. I don't know if it was supposed to make a difference but I got lower times when I switched to sport.
Sent from my Moto Z (2) using Tapatalk
Quote from: BoostfoSHO on March 10, 2018, 07:16:43 AM
Quote from: ZSHO on March 10, 2018, 07:02:51 AM
The 60' Foot times explain alot and are crucial for an overall great ET.
What tires are you running with? Tire psi lowered ?
I netted an overall Best 1.752 - 60'- times. Z :)
I am running conti's dws and no I didn't lower the psi
What can I work on to lower my 60' times?
Sent from my Moto Z (2) using Tapatalk
Drop the tires down to 28 - 26 front!
DId you recently reflash the car ? Z
Quote from: ZSHO on March 10, 2018, 07:30:55 AM
Quote from: BoostfoSHO on March 10, 2018, 07:16:43 AM
Quote from: ZSHO on March 10, 2018, 07:02:51 AM
The 60' Foot times explain alot and are crucial for an overall great ET.
What tires are you running with? Tire psi lowered ?
I netted an overall Best 1.752 - 60'- times. Z :)
I am running conti's dws and no I didn't lower the psi
What can I work on to lower my 60' times?
Sent from my Moto Z (2) using Tapatalk
Drop the tires down to 28 - 26 front!
DId you recently reflash the car ? Z
Alright I'll try that next time. I wouldn't say recently about 2 weeks and have driven over 1000miles.
Sent from my Moto Z (2) using Tapatalk
The DA was not your friend. Just curious: Were you getting much wheelspin when you launched?
What was the DA?
Ah I see almost 4000....I guess that's not great?
Excuse my ignorance but how does one figure out the DA?
Sent from my Moto Z (2) using Tapatalk
Quote from: Brucelinc on March 10, 2018, 09:48:09 AM
The DA was not your friend. Just curious: Were you getting much wheelspin when you launched?
From what I could feel there was no wheel spin. The track was hot and being used heavily by dragsters tuning for today's show bracket.
Sent from my Moto Z (2) using Tapatalk
http://www.dragtimes.com/da-density-altitude-calculator.php (http://www.dragtimes.com/da-density-altitude-calculator.php) . Z
I am on the fence about the turning the car off in the staging lanes... the heat builds up with nothing to help dissipate it... I have found that in the staging lanes, its almost better to leave the car running with the fans on high... I only turn the car off when I am in the pit and wait for awhile...
I don't think it is a good idea to shut the car off in the staging lanes unless there is a long delay such as when someone drops oil or something like that. My car's temp is always higher when I restart after shutting it off unless it is off for a longer period of time.
If the OP was getting no wheelspin at launch, I see no reason to lower tire pressure. That would just increase rolling resistance. No wheelspin at all tells me that he could launch a bit harder. Then if there is significant spinning, I could see lowering the pressure. My best times have always been with a just bit of spinning to prevent bogging but not enough to hurt the time.
Quote from: BoostfoSHO on March 10, 2018, 07:26:30 AM
I was launching right between 1800 and 2000rpms... Both my 13.3 runs we're in Drive and my 13.1 and 13.2were in sport. I don't know if it was supposed to make a difference but I got lower times when I switched to sport...
Yes, you should be running in "sport" for sure. As I understand it that changes some of the parameters for throttle response and shifting. For my car, the runs I forgot to put it in S and ran in D, would be about 1-3 tenths slower. I would also make sure you have traction control turned off. And Turn off the A/C. Don't turn the heater on either. Just turn the whole system off. I have no idea why, but every time I left the heater on I ran 1-2 tenths slower.
4000 isn't great but certainly not as bad as what the folks deal with in Colorado. Even with that 60 I would have expected a bit better with downpipes.
Quote from: Agentlongwood on March 11, 2018, 08:47:23 PM
Quote from: BoostfoSHO on March 10, 2018, 07:26:30 AM
I was launching right between 1800 and 2000rpms... Both my 13.3 runs we're in Drive and my 13.1 and 13.2were in sport. I don't know if it was supposed to make a difference but I got lower times when I switched to sport...
Yes, you should be running in "sport" for sure. As I understand it that changes some of the parameters for throttle response and shifting. For my car, the runs I forgot to put it in S and ran in D, would be about 1-3 tenths slower. I would also make sure you have traction control turned off. And Turn off the A/C. Don't turn the heater on either. Just turn the whole system off. I have no idea why, but every time I left the heater on I ran 1-2 tenths slower.
Yes I noticed the 2 tenths drop in sport mode. And I did have the whole AC system off. The guy lining up the cars tells you to turn it off before running.
Sent from my Moto Z (2) using Tapatalk
Quote from: Blackhawk on March 11, 2018, 09:40:11 PM
4000 isn't great but certainly not as bad as what the folks deal with in Colorado. Even with that 60 I would have expected a bit better with downpipes.
I did too expect at least high 12s. I wonder is having the cut outs open decrease performance. I'll have to run next time with them closed.
Sent from my Moto Z (2) using Tapatalk
It sounds like you're doing everything correctly... Traction control off? 93 octane fuel? If nothing seems wrong, I would datalog some 1/4 mile runs and have AJP check them. If there is something amiss he's sure to find it.
Quote from: Agentlongwood on March 11, 2018, 09:50:48 PM
It sounds like you're doing everything correctly... Traction control off? 93 octane fuel? If nothing seems wrong, I would datalog some 1/4 mile runs and have AJP check them. If there is something amiss he's sure to find it.
Unfortunately I only have 91oct available in my area so that may be why. I was able to datalog the 13.2 run I already sent it to him. I'm on revision 8 or my tune I doubt anything else could be done. I was having an issue with my turbos and wastegates but it seemed to have been related to my wastegate mod and I think Brad got it tuned correctly now.
I'm gonna install meth next so hopefully that'll get me into the 12s
Sent from my Moto Z (2) using Tapatalk
Aha, I bet the 91 octane is the culprit. I'm running 93 octane, and I got lined up at the track with a SHO that had the same mods and an E30 tune. I ran 104mph he ran 112mph. We were neck and neck till almost the 1/8th mile. On the big end though, he absolutely walked away from me. So from my limited experience, I think higher octane lets you tune to be much faster.
Quote from: Agentlongwood on March 11, 2018, 11:23:43 PM
Aha, I bet the 91 octane is the culprit. I'm running 93 octane, and I got lined up at the track with a SHO that had the same mods and an E30 tune. I ran 104mph he ran 112mph. We were neck and neck till almost the 1/8th mile. On the big end though, he absolutely walked away from me. So from my limited experience, I think higher octane lets you tune to be much faster.
Yes I figured, Brad has mentioned to more than once that my 91 fuel is crap lol
Sent from my Moto Z (2) using Tapatalk
Couple things that I see in your track log that add up and make sense of it. Your IAT's were at about 145 before your run even started and ended at 152 so that's pretty warm. If your IAT's were closer to 100 that would be worth about 5 degrees of spark. Your spark tuning looked great as far as the amount of KR..You never had more than about 1.5 degrees of KR and near the end of the run your knock sensors were adding a bit of spark.
Your OAR was at -1 so even if your fuel is so-so it still was giving the expected octane...Your spark is low but that is what we were commanding due to the 91 and the IAT compensations but it is all good...If you had an odd amount of KR or OAR was higher then you could say something was amiss
You were only hitting 8-11 degrees of spark on your run...That's pretty much the culprit...I think you normally need about 15-18 degrees of spark at 13-14 psi to hit mid 12's.
And on top of your lower spark add to that the crappy DA and I'd say there you have it
I would say if you get your meth on you will get to where you want to go...The IAT's will come down which alone will give spark but you will get more octane which will allow us to command more spark and boost if we want because the fuel assist is there.....That's my synopsis.
Quote from: AJP turbo on March 12, 2018, 03:57:44 AM
Couple things that I see in your track log that add up and make sense of it. Your IAT's were at about 145 before your run even started and ended at 152 so that's pretty warm. If your IAT's were closer to 100 that would be worth about 5 degrees of spark. Your spark tuning looked great as far as the amount of KR..You never had more than about 1.5 degrees of KR and near the end of the run your knock sensors were adding a bit of spark.
Your OAR was at -1 so even if your fuel is so-so it still was giving the expected octane...Your spark is low but that is what we were commanding due to the 91 and the IAT compensations but it is all good...If you had an odd amount of KR or OAR was higher then you could say something was amiss
You were only hitting 8-11 degrees of spark on your run...That's pretty much the culprit...I think you normally need about 15-18 degrees of spark at 13-14 psi to hit mid 12's.
And on top of your lower spark add to that the crappy DA and I'd say there you have it
I would say if you get your meth on you will get to where you want to go...The IAT's will come down which alone will give spark but you will get more octane which will allow us to command more spark and boost if we want because the fuel assist is there.....That's my synopsis.
Thank you for the lesson. I will work on getting the meth on as soon as I can. Next time I'll pop the hood and try to keep it cooled down.
Sent from my Moto Z (2) using Tapatalk
Brad,
What IAT2 temps do you typically see when using 100% meth?