Anyone with OBX longtubes run at the track yet?
Any OBX Header track times?
deerslayer
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I had a cat-back with FM 40 series straight out the back. I don't remember if I had the walker b-pipes or not. I can try to find my old time slips for the exact date, but I believe it was mid November-ish. I found a link that someone on here had for the DA calculator. I entered all the information and it said that ideal I would have ran 15.3.
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Ok, here's the results from my run tonight. My best time with superchips 93 tune and FM 40 series cat-back was 15.8 @ 87 mph. Tonight I ran the Uprev 93 tune and got a 15.3 @ 90 mph. I know that I could have done better, but it was the first Wed. night test-n-tune and was packed. I only got 2 runs. I've never done a foot brake start, so my RT was .545. My best RT to date is .070. So doing something different with a much slower RT plus the setup that I have showed a .5 sec improvement. I know that I can get much better if I put the Titan on a diet (remove bull bar, step bars, spare tire, and some interior items). All that and I checked to see which gears I have and it's the 2.9x gears. As the year goes on, I'll post up some from time to time.
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Nice run!!! Thank's for posting! .5 sec is a considerable gain! Also you picked up +2 mph trap speed!!! That's a lot for these big heavy truck's!! What kind of vehicles did you run against?
My T has been stuck @ 95-96 mph forever. I'm hoping to get consistent 97's out of it with these B-Pipes... I need to hit up "Test 'n Tune" Night!!!
My T has been stuck @ 95-96 mph forever. I'm hoping to get consistent 97's out of it with these B-Pipes... I need to hit up "Test 'n Tune" Night!!!
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Reaction time doesn't help or hurt 1/4 mile times. What was the da on the 15.8 & the 15.3?
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The DA must of been bad to only gain .5 seconds.... especially with the mods you have, you should at least be 14.2-14.5
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I agree, I wish he'd post up a time slip so I can check the DA and the 60' time. I'm sure OBX headers are worth more than that. He went from FM muffler to a bullet, Obx headers and Uprev. Thats worth a full second right there.
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I agree that the times should have been better. I put the truck in drive and let the truck shift itself. I noticed that it was shifting at the red line. My dyno sheet shows that my peak hp is around 4500. This was my first run of the season, but only my 3rd set of runs ever in my life. I'm sure the times would be better if my truck was on a diet and a more experienced driver. Anyway, here are the times:
10:21 p.m. April 6, 2011 Gainesville Raceway
RT: .545
60': 2.419
330: 6.460
1/8: 9.856
MPH: 72.03
1000: 12.815
ET: 15.327
MPH: 90.21
10:21 p.m. April 6, 2011 Gainesville Raceway
RT: .545
60': 2.419
330: 6.460
1/8: 9.856
MPH: 72.03
1000: 12.815
ET: 15.327
MPH: 90.21
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Your 60' time is killing your 1/4 ET. You add/subtract .2 in the 1/4 for every .1 difference in 60' time. If your 60' was at 2.00, your 1/4 would have been ~14.5.
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O.K that explains it, lol a 2.419 60' time. If you launched just one time for me in 4wd your 60' time would be a 2.0 and you'd knock off .5 or .6 your 1/4 mile time. You'd be a 14.5 to 14.7 on the same day and same conditions. What was the temp like?? DA is density altitude and plays a huge roll on your times. The cooler the denser the air, the better she runs.
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It was actually an almost perfect night. Temp was around 65*. I've been told by a bunch of people (experienced racers) to launch in 4wd. I haven't done this yet due to the fact that my luck I'd break something and I don't have another vehicle to fall back on. Once I get something else, then I'll have no problems doing so. BTW, you're not the first person to laugh at my 60' times.
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I wonder what your wheels and tires weigh. If the combined weight is ~85#, that will cost you several tenths.
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I don't know what the weight of each tire/wheel is, I guess I could take one of them off and use a bathroom scale to find out. All I know is that they are not light. I'm sure that I'll get the times down with a little more experience under my belt, but for now I think it was a big improvement over last years numbers. As my times get better, I'll post them up.
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Your 60' times are not that good because your truck is a torque beast! 2.2 is all you will get w/out tru trac unless your man up & launch in 4wd pm me if you ever decide to try it.
pm me if you ever decide to try it.
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A 2.10 60' is about as good as it gets without Trutrac on street tires.Your 60' times are not that good because your truck is a torque beast! 2.2 is all you will get w/out tru trac unless your man up & launch in 4wd
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That is unless you launch it in 4X4! :eyebrow:
I am very interested to see what you could do w/ a TT! Bring some of that TQ into play right off the line! When i swapped my Y-Pipe it changed my power curve big time! Now with these Berk's i'm not sure where my max power is at??? I need to take another trip down to Relentless & get dynoed again & the "line pressure upgrade" while i'm there!
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Awesome, please post a pic of the time slip.
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SWeet man! Break it down for me later. Da difference's ect from b4 & after headers. I want to know what those obx's are worth
DA here stays pretty consistent. I don't really worry about it much because I don't care what my suv would run elsewhere.
Second run:
1.979 60 ft
8.767@78.95 1/8 mile
13.725@99.43 1/4 mile
It should stay in the 13.7s now that my suv is hot. It normally runs the quickest on the first run. I'll post scans of the slips when I get to work on Monday for the non-believers. I have a hd hero, but my friend stole it to record runs in my old 240.
Second run:
1.979 60 ft
8.767@78.95 1/8 mile
13.725@99.43 1/4 mile
It should stay in the 13.7s now that my suv is hot. It normally runs the quickest on the first run. I'll post scans of the slips when I get to work on Monday for the non-believers. I have a hd hero, but my friend stole it to record runs in my old 240.
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