That 11.49 was an unrealistic goal for now I guess. The car ran strong and consistently, but I need to hit an 11.5 before I can worry about 11.4s. It was way hot when TNT started, so I was down 1mph on the traps, but I was still running well. It took 4-5 runs to kinda figure out the DRs, since I started at 35psi and ended at 22-24psi. From run 4 on, every 60' was from 1.63-1.69, and all the runs were 11.62-11.71. I am a little confused on why my better 60's didn't give much better ETs, but there was a pretty strong headwind as the day went on. As it got cooler, we got the headwind, so it didn't help much in terms of conditions - my traps stayed very consistent within 1mph range. Here are my times once I got the DRs working well:

11.712 @ 118.86 - 1.685 60' (all my left lane traps seem 2mph higher than actual)
11.696 @ 112.40 - 1.671 60' (all my right lane traps are ~6mph slower than the left for me, or maybe I'm half Puerto Rican?)
11.677 @ 118.54 - 1.687 60'
11.647 @ 119.18 - 1.659 60'
11.639 @ 113.67 - 1.693 60' (hmm, worst 60' but very good ET - trap is my highest in the right lane by over 1mph to date)
11.633 @ 119.40 - 1.637 60' (wtf, great 60' and high trap but barely better ET than the 1.69 60')
11.627 @ 118.60 - 1.654 60' (worse 60' and lower trap but best ET - hard to figure out)

I had the DRs at 22-24psi and was launching at 7000rpm on the 2-step - it was nasty, but the ETs didn't seem to mimic the 60's. My 11.64 and 11.69 on Sat with street tires were both 1.68 60'. Maybe the conditions weren't quite as good, so my 60's were making up for that difference but not enough to drop down to the 11.5s. I am not sure if I should drop the 2-step down to 6500-6800 and raise the tire pressure some so I keep the drag to a minimum up top. I am not sure if I was spinning or what - I couldn't really feel the DRs as well as my streeties.

I had 3 goals with the 245/45-17 Nitto 555Rs:

1. Cut much lower 60's - in the 1.5 range = Failure so far, but did get down to 1.63. Not really sure what to do to get 1.5s. Maybe my shifting before the 60' box makes this unrealistic and not even that big of a deal?
2. Hit the same traps with lower rpm due to 245/45 tire size = Success! I was trapping the same...or maybe half a MPH lower on average, but my rpms were just above 7k rpm instead of upper 7000s. I think it made a 300-400rpm difference, although I'm sure it could be calculated easily by someone who knows what they're doing.
3. Cut consistent 60's that don't jump from 1.71 to 1.88 as the night goes on and the temps drop = Success! I hit one of my 11.63s at 8:45pm when it had cooled off, a storm front had rolled in, and the wind was blowing straight back. All 1.6s all night.

 

Did you happen to log any of these passes? If so I'd like to take a look if I may. I would have suspected that the high launch with low 60's would make a difference. What did the car do with a lower launch? Bog or just run slower?

 

I did run the logger for the first 4-5 runs, but I need to go find them. They weren't showing up in my EvoScan "saved data log" folder, but I know it was logging.

On the 11.62, I was a full mph slower than my previous 11.65, so I think the tires were making a difference, but I was having to overcome slower conditions. We're talking a tenth or less, so conditions weren't BAD, but I didn't hit one trap tonight that matched my ones on Saturday.

Due to this being the first night on the DRs, I tried to change only one variable until I got it right. I did a 6500rpm launch with 35psi and ran a 1.72 on the first run. From there, I went straight to 7k and left it there but continually lowered the tire pressure. I hit 1.6s at every psi from 30 down to 22, so I'm not sure if going to 18 would be better or not. That's why I'm thinking to maybe do 6500 with 26-28psi, but I'm not sure. I'll do more testing...

Here are my splits until I can scan the timeslip when I get home Friday night:
60------1.654
330-----4.793
1/8------7.435
MPH-----93.97
1000----9.704
1/4------11.627
MPH-----118.60

 

I have to admit one thing. After all the years of reading your posts-- You just keep at it.

I wish you the best.

 

what tyre pressure were you running? didn't experience any wheel hop?

 

Your not going to experience any wheel hop with Drag Radials on any small turbo. If anything you'll bog with an improper launch.

 

I started at 35psi and dropped them gradually as the night went on until I got to 22-24psi, which is where I stopped. I know they work great at 15-20psi, but I was hoping to keep the tire pressure up in order to reduce drag. I will be doing more testing in subsequent TNTs. I did not have any bogs, but I did spin badly once due to them being cold. There was no wheel hop, which was great. The tires took my 7k launches with ease.

 

As long as those trap speeds in the left lane are accurate i'd say you should be in the 11.5's for sure. Are you lift shifting or no lift shifting?

 

I had one run that I thought would be a sure 1.59, but it was slower than the 11.62 somehow - can't explain it:

60-------1.654-----1.637
330-----4.793------4.768
1/8------7.435------7.420
MPH-----93.97-----93.76
1000----9.704-----9.703
1/4------11.627---11.633
MPH-----118.60---119.40

Look at the 60' and the 330'. That was well on its way to being an 11.5, but then I lost ground somehow and even ended up being slower despite a higher trap. I really couldn't explain this one as my shifting was still very good, and I only have one **** after the 330 - the eastiest one - so either it sucked or my car wasn't pulling as hard (in spite of the trap).

 

Hmm, well did you lift shift or no lift shift? If you are no lift shifting I highly recommend adding the NLTS Ecu patch if you do not have it already.

 

hmmm.. that may be mostly true for full slicks with wrinkle wall, but on a drag radial i'm not so sure i would make an absolute statement like that.

 

I was actually curious if that statement he made was absolute...if wheel hop could commonely occur with smaller turbos.

 

Nice, sounds like good times..I am heading for the track tommorow with a goal of 11.8.

I have 245/45's as well but unfortunately I am passing the line at close to 8000

 

I NLTS every gear, but it's not always a full 100% TPS on my logs - it really depends on how I hit it. However, I can't stand the NLTS patch - it just gets in my way and makes my car bog after the shift. It may just be setup wrong, but I've been doing NLTS for years before that patch was available, so I have it down pat pretty well.

 

Keep up the great work! You're running some pretty darn good times!

BTW...aren't your power #s a little low considering you are running E-85?