Buy yourself one of those portable air tanks, and then take it to your local Praxair distributor. Have the tank filled with N2, and you can adjust your tyre pressures to whatever level you'd like both pre and post run. You'll have plenty of N2 to last you the evening.

Bish

that launch was really impressive, you left that Z06 in the dust. i had the *ahem* experience to driving a C6 Z06 at the dealership once, the thing was practically uncontrollable yet explosively powerful. side by side with it is a great comparison!

Conrats on the great runs Duck! It is truly amazing how fast the GTR gets out of the hole--stock tires, stock tire pressure, and no burnout is truly amazing. Nice videos too!

It was just blind luck that I lined up next to a Z06... the guy was a road course driver more than a drag racer. I think this was his first time to the strip. I think he could have done a little better, but not much. The only thing I saw on street tires faster than me was a VERY tweaked Viper GTS I ran against at the end of the night. That car ran an 11.08 at 144mph.... just barely faster than my best time, but top speed on it was crazy. He was spraying from 1/3 of the way down the track on. I could see the difference in acceleration when he hit the NO2.


Yeah, it's been inconsistent for me tho. Sometimes LC works like a charm and other times I get a LOT of wheel spin and run 12s+. Non-LC launches are very consistent. Not sure what else I can do except find a way to heat the tires up and/or line up better in the lane.

Aren't you running the Bridgestones? Wonder if the Dunlops would make a difference.....

Interesting graphs. On my custom tune with Sharif I started out stock at 382, a fair bit less than you but in the end I hit 473 AWHP with an HKS racing pipe. Sharif said something about Nissan probably detuning late model cars which I suppose must be right. I picked up a lot of power from a Stage 1 cobb tune and Sharif took it to the atmosphere!

that's great news man... what boost levels are you running?

did you watch the boost levels at the higher gears?

and did you try short shifting to try and stay at peak torque?

Nice runs.

I noticed these:
http://www.chickenhawkracing.com/productDe...8e278838090738f
http://www.chickenhawkracing.com/productDe...hp?m=3&i=15
Might be overkill so maybe consider borrowing a set.

Mcduck, have any of the dragstrips given you crap about not having a legal rollcage? The tracks around Portland are telling me if I run quicker than 11.50 1/4 mile that it will be my last. (I'm sure that won't be hard as I've got a y-pipe and custom tune) Anyone else having issues with the no-cage thing?

No, I am on dunlops now. My original Bridgestones were worn out by 12K miles


I do not have the boost graph... maybe Sharif could post that up. if not, I'll try to remember to pull that gauge up and see what I hit next time I run it hard.


I had one guy mention I may have to put a rollbar in to continue to run there. As I understand it, NHRA sanctioned tracks are much stickier about this rule than some... anything quicker than 11.5 is supposed to have a roll cage. I'm going to try to go again possibly on March 26th. I think I *may* be able to sneak out one more event, but sooner or later they will catch on and at that point I'll probably stop running. I plan to put a harness bar in, but do not want to install a rollbar.

theres another one on the 26th?

Next Test & Tune is April 17th. There is something called a "Street Racing Opener" on March 26th. I've been told they will be allowing Test & Tune runs in between the actual event runs.

if you find out some more info on it let me know i wanna run mine if possible that day

Been a while since my last update. Made another trip to zMax last night for the Street Racing event. Maybe 60 or so participants, so I was able to run a lot more.

Had a few dog runs where the LC did not engage properly... 12.0s runs that were kind of lame.

The rest of my runs were consistently in the low 11.1s and mid-120s on MPH, but still only getting 1.8 to 1.9 on my 60' times. Did this several times. Pissed a little because what *felt* like my best run of the night they did not give me a timeslip for AND the time/speed didn't light up on the display at the end of the track (though we have it on video). I feel like it had to be in the 11.0 range, but I have no way to verify it.

Started experimenting at the end of the night... seemed driving THROUGH the water box and stopping with rear tires in it, doing a launch with VDC off from there to spin/warm/clean the tires. Then another launch from the tree (either VDC on or off) yielded the best results. I was hitting 5th gear long before the trap lights doing this. 5th gear is killing me. It is so tall and you can really feel the difference in pull shifting from 4th to 5th. If it were geared better 4th and 5th, could definitely hit 130s I think.

I will post a few of my new runs on streetfire.net and/or dragtimes.com. I think I have 2 of the 11.1 runs and the one that has no time data on video.

Unless I can figure out a way to drop my 60' time down to 1.7s or so, I probably am done with drag racing. I really see no point... the car is consistently running 11.1s and my only desire at this point would be to pull off a 10.9s run to brag about. Not worth killing myself over.

Interesting side note #1... plugged my 1/8th time and speed in an online calculate and it says I am hitting 60mph in 2.66 seconds... if it is accurate at all. My typical 1/8th has been 7.4s @ 100mph. Here's the webpage... http://www.wallaceracing.com/0-60_equation.php

Interesting note #2... my car made the local news! Unfortunately, they got me redlighting... lol. Story about street racing event and street racing. My car is about 3/4s of the way through the vid...
http://www.news14.com/content/local_news/c...ay/Default.aspx

always exciting to be on the news.... now your famous

Just a follow up.... I am going in for my 24K and 1yr POS services this week. As always before I visit Nissan Service, I uninstall the Cobb AP tune and reload the stock tune. It continually amazes me the difference this makes in the car. The absence of additional midrange power makes the car fell (if you can believe it) slow. Guess you just kinda get used to that power being there.

Only similar experience I had was in my Vorteched 350Z once when the supercharger belt shredded. In that case it was more extreme, but essentially felt like the car suddenly was dragging an anchor behind it.

I think after this visit to Nissan, I am just going to leave the Cobb AP tune on. They know I have it and my mileage is getting near the limit of the standard warranty. I mainly uninstall in case they are doing some sort of engine balance readings.

I still cannot recommend the Cobb AP and mid-pipe combination enough. It is tremendous bang for the buck on this car.

Only downside to leaving the Cobb tune on, is if they attempt to update or reflash it could potentially screw things up?

you'd loose your Cobb tune map if Nissan dealer forces a flash with C3, as mentioned on my thread on other side. so makes sense to uninstall before hand.

BTW Mcduck, your review one of best threads ever on here so good i used it on UK forum :-P

Unless it is a custom tune, why would losing the Cobb map be a problem? You would have to reflash anyway?

The accessPORT will think its already uploaded a map to your car. alone comes middlehurst and forces a flash on your GTR with consult III, good bye cobb map (any map)... you can't use you ap again to load a new map again cos your ap thinks its already on the car !

plug your ap into the obd and it will say already installed

Otherwise whats to stop one ap from flashing every gtr in the world and put Cobb out of business. It marries itself to one car thats it.


so simply uninstall b4 going hpc to be on safe side !

Glad to help! You have no idea how hard it is trying to be unbiased when everytime you get done driving your car there is a huge smile on your face.


Wow... I've always done it just to be safe, but that's good info. I had no idea it could do that.

The Consult III tool cannot simply overwrite an AccessPORT installation, our testing has shown. You must modify the tool in a sepcific way in order to overwrite an AccessPORT flash, this would have to be deliberately done to overwrite a reflash. So, unless your dealership knows how to do this and decides they want to reflash your car in such a way, they can't wipe out your AccessPORT. If this DID happen, simply send us your AccessPORT with the documentation of the dealership overwrite and we can restore your AccessPORT's functionality.

Travis
COBB Tuning