GT 13.1 What's wrong?

[Mark5825]

Hey op my opinion thats not bad for street tires.I ran a 12.8 at 113 with the same mods and when i put the drag radials on im sure i will be in the low 12,s.Put some drag radials on and watch how ur et drops.If u could squeeze a 1.9 60 ft with ur stock tires u probably be at 12.7 or 12.6.

Thanks. I think I'm getting caught up in seeing a few people's great runs. Thinking headers will be next.

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[beefcake]

I just refer to theirs as dyno tune or shop tune. What looks to be somewhat consistent is the 60' on most of their were worse, maybe the times would be about even if I had some better starts at the beginning. The other thing I notice is all of the Lund runs have a higher MPH.

or maybe our tune is just better....

 

[Tommy V]

Thanks. I think I'm getting caught up in seeing a few people's great runs. Thinking headers will be next.

Thanks no problem.But ur definitely going to have to get ur 60 ft down and u will see much better et,s.Alot of the guys with great runs are running drag radials,stock tires just dont cut it on these cars lol.

 

[Mark5825]

Couldn't find my track on the website but from using the calculator:

Density Altitude: 1409 feet
Relative Density: 95.94 %

Run 6: 12.754 @ 113.0
Run 7: 12.716 @ 113.5

Gotta love Houston/Baytown weather

 

[Tommy V]

Couldn't find my track on the website but from using the calculator:

Density Altitude: 1409 feet
Relative Density: 95.94 %

Run 6: 12.754 @ 113.0
Run 7: 12.716 @ 113.5

Gotta love Houston/Baytown weather

Cool i wanted to figure the da for Md last night at 79 degrees but im sure how to calculate it lol.

 

[Mark5825]

http://www.dragtimes.com/da-density-altitude-calculator.php

If your track is here it should be easy. If not you can probably search your track and find the missing info (barometric pressure & elevation) and use a nearby track for the previous date's humidity and temperature.

 

[Mark5825]

When using this calculator will the time always go down?

Hmm I found my track, it was slightly misnamed but the info is a bit different from what another website (airdensityonline.com) says and the difference is 1409 to 1653. Not sure which would be right.

Down to 12.675 lol. I'm getting better gains sitting on the couch!

 

[Tommy V]

When using this calculator will the time always go down?

Hmm I found my track, it was slightly misnamed but the info is a bit different from what another website (airdensityonline.com) says and the difference is 1409 to 1653. Not sure which would be right.

I found my elevation 3,360 ft and it was about 75 degrees at my run,juzt not sure about baro.

 

[Mark5825]

I found my elevation 3,360 ft and it was about 75 degrees at my run,juzt not sure about baro.

http://airdensityonline.com/tracks/

Try that, there DA calculation is much different but I'd put the missing parameters in the dragtimes.com calculator.

 

[foghat]

So the new Lund file just ran fine? Or was there anything else you did?

Bottom line is that you are consistently running about 2mph faster with the lund tune. That there tells you which tune is making more power.

 

[Mark5825]

So the new Lund file just ran fine? Or was there anything else you did?

Bottom line is that you are consistently running about 2mph faster with the lund tune. That there tells you which tune is making more power.

Yes, new file ran fine. I'll have to go back to the shop and talk to them about that.

 

[cobra199711]

I know it's very frustrating. I want to thank you for putting this all out here for us to read. I will say though, it appears the Lund tune is the more powerful of the 2..judging solely on mph on the closest runs between the 2. Btw are u running with the sub box and all in vehicle? That probably an additional 70 lbs

 

[Mark5825]

I appreciate that, it is very good to hear it can help others. Is it odd that I ran a 12.982 in "D" and a 12.952 in Track? Yes... I do have my audio system, just looked it up and each sub is 20.5 lbs (10" alpine type R) and the amps are 8.4 lbs each. There's the 3 boxes you can see below not sure what to guess on those. And I just noticed I've also got that spare tire, according to American Muscle that's 40 lbs drop. So maybe I'm a little under 150 lbs extra right now? That would knock off at least another .1 huh?

 

[cobra199711]

^^^^ wow very nice set up... I would bet you are leaving a solid .1-.15 easily due to weight alone. So, you would probably be closer to the 12.70s in just weight reduction. Btw I have an MRX110 coming for my 10 inch Soundcubed sub... Oh yeah for reference, my 2012 auto with off road x pipe,Vmp tune on street tires ran 12.4#s at 114.##. That car was a bit lighter than you, 60 foot about the same but in cooler weather. I think you will be fine with some weight reduction and an off road pipe if u so choose to go back to the track. I would bet with the aforementioned you would be around mid 12s

 

[Mark5825]

^^^^ wow very nice set up... I would bet you are leaving a solid .1-.15 easily due to weight alone. So, you would probably be closer to the 12.70s in just weight reduction. Btw I have an MRX110 coming for my 10 inch Soundcubed sub... Oh yeah for reference, my 2012 auto with off road x pipe,Vmp tune on street tires ran 12.4#s at 114.##. That car was a bit lighter than you, 60 foot about the same but in cooler weather. I think you will be fine with some weight reduction and an off road pipe if u so choose to go back to the track. I would bet with the aforementioned you would be around mid 12s

If you enjoy car audio you might like my other post http://www.mustang6g.com/forums/showthread.php?t=18504
It is possible to remove my spare and possibly the subs, I'll have to check and maybe do that one day.

When you say offroad pipe do you mean offroad headers?

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