[OpenFlash]

Finally found a nice section of track in Mexico where tire spin was less of a problem than it was the other night. This meant I could run with traction control fully off to see what the car could really do. And it turns out, it can do some pretty remarkable stuff

Did 3 back to back 60-130mph pulls. And the last pull did a World Record breaking 6.73s
with a -1.6% grade

Video of the 3rd run:

VBOX:


Datalog:
I did 3 60-130s in a row. The last one was the fastest.
All 3 runs:

3rd run zoomed in:


Looks like the car can run 6.4-6.5s if I take advantage of the max allowable -3% grade. Which is pretty spectacular for what is literally a daily driver. We have put on 4000 HARD miles since the single turbo was installed a couple months ago. The engine currently has 85k miles on the clock. All HARD miles. Much love for the N54. Just needs some good tuning and a proper turbo system to make it sing

Shiv

[D_Smiderreen]

Good job Shiv. We appreciate your hard work and where you're taking the N54. With that being said, I think it's time you focus on shattering the 1/4 mile WR.

[OpenFlash]

Originally Posted by D_Smiderreen

Good job Shiv. We appreciate your hard work and where you're taking the N54. With that being said, I think it's time you focus on shattering the 1/4 mile WR.

Without installing a cage, we can't run faster than 11.5s without getting kicked off the track. Right now, the car should be capable of mid 10s passes. We will only get one run given the fact that we don't have a roll cage. So when we do it, we will do it right and make sure our one run counts. Will have to wait until after this months magazine tests though.

Shiv

[Sigma 3]

Nice work.

[SIKH335]

Great work can wait to get back and drive mine.

[D_Smiderreen]

Originally Posted by shiv@vishnu

Without installing a cage, we can't run faster than 11.5s without getting kicked off the track. Right now, the car should be capable of mid 10s passes. We will only get one run given the fact that we don't have a roll cage. So when we do it, we will do it right and make sure our one run counts. Will have to wait until after this months magazine tests though.

Shiv

Great news..we can't wait

[Tzu]

I see you peaked at 25-26psi after shifting. I assume youre running the new AEM manifold sensor?

edit: Just saw your other thread.

[BoostedE90]

Originally Posted by SIKH335

Great work can wait to get back and drive mine.

^^Definitely jealous. Wish i lived on the other coast!

Great work Shiv! Your car is a beast!

[ppatel223]

When do you guys sleep? lol

[MAC335i]

Originally Posted by shiv@vishnu

Without installing a cage, we can't run faster than 11.5s without getting kicked off the track. Right now, the car should be capable of mid 10s passes. We will only get one run given the fact that we don't have a roll cage. So when we do it, we will do it right and make sure our one run counts. Will have to wait until after this months magazine tests though.

Shiv

put..

in..

a..

cage.....?


just a thought awesome results

[hotrod182]

What are your highest vbox qtr mile traps or 60-130 times on level runs? (.20% slope or less).

[Themythx]

Sweet! I really want this turbo kit!

[pits200]

Originally Posted by hotrod182

What are your highest vbox qtr mile traps or 60-130 times on level runs? (.20% slope or less).

Was waiting for you to chime in? This is when the conversation gets down to the 1/10000th % of the slope.

[hotrod182]

Originally Posted by pits200

Was waiting for you to chime in? This is when the conversation gets down to the 1/10000th % of the slope.

Anyone that runs these tests knows that a 1.6% or greater slope will most likely get you .3-.50 seconds quicker times. So for a more standard comparison, its good to know what your car does on a level surface if that makes any sense to you. The 3% slope max really doesn't make sense. It would be like going down hill from a four story building!

But seriously, what good would comparing qtr mile drag strip #s mean if some tracks went up hill 30ft and some went down 30ft.

So its good to have both sets of numbers. But on the other hand, would love to see the N54 beat some of these fast M3's. For that a 3% grade may be needed.

[themyst]

Originally Posted by hotrod182

Anyone that runs these tests knows that a 1.6% or greater slope will most likely get you .3-.50 seconds quicker times. So for a more standard comparison, its good to know what your car does on a level surface if that makes any sense to you. The 3% slope max really doesn't make sense. It would be like going down hill from a four story building!

But seriously, what good would comparing qtr mile drag strip #s mean if some tracks went up hill 30ft and some went down 30ft.

The difference between 0 slope and 1.4% slope is close to a second on a FBO + meth car. I've run 10.6 on 0 slope but 9.39 on a 1.4 slope. If I went down to a 2.8% slope I am all but certain I could have cracked 8s on stock turbos.

Edit- my friends tuned C63 bested a 9.7 averaging 9.9-10.1 on 0 slope, but did 8.71 on a 2.5% slope. Huge difference.

Back OT, I am wondering how Vishnu plans on increasing the rev limit for 6AT cars. The car will automatically upshift around 6850 no matter if the car is in DS or manual mode. This can't be corrected short of a TCU reflash but well see.

[pits200]

Originally Posted by hotrod182

Anyone that runs these tests knows that a 1.6% or greater slope will most likely get you .3-.50 seconds quicker times. So for a more standard comparison, its good to know what your car does on a level surface if that makes any sense to you. The 3% slope max really doesn't make sense. It would be like going down hill from a four story building!

But seriously, what good would comparing qtr mile drag strip #s mean if some tracks went up hill 30ft and some went down 30ft.

Of course I understand but I think we can all agree that finding a 60-130mph area that is somewhat abandoned is hard enough to begin with. Then to find one that meets the less than 3% slope is another story. Then to find one that is less than 1% is even harder. Then to find one that is less than .20% is even harder, not sure if that makes any sense to you though?

It's a basic calculation since you guys seem to have it figured out. Every 1% in slope = X second variance. Use that basic calculation to come up with an average 0% slope figure and then use that calculated figure for comparison. Unless you guys run on the same roads, you will most likely never have the same slope %.

[Lulz_M3]

Originally Posted by shiv@vishnu

Will have to wait until after this months magazine tests though.

Shiv

Congrats!

...How much sweeter would it be to post a 10 sec timeslip along with your magazine tests though!

[gdawg20001]

Awesome work!

[marv85]

Good Work Shiv!

what's your max rev set to? Did you get to 7400RPMs in that vid or was it just the angle??

[eric@helix]

Great work! I think I recognize that section of track in Mexico!

[jpsimon]

Now that is fast!

[OpenFlash]

Originally Posted by Tzu

I see you peaked at 25-26psi after shifting. I assume youre running the new AEM manifold sensor?

edit: Just saw your other thread.

Yes, a post NLS shift boost spike is unavoidable because the engine drop RPM faster than the turbo. Same reason 6ATs boost spike post shift. To compensate, I've mapped in some ignition retard during that condition. Which is why post-shift timing is low. I'm probably being overly conservative in this respect but the results are still good enough.

Th rev limit is set to 7200rpm in 3rd and 4th gear. Datalogs show the same. The tach needle doesn't seem to be very accurate when it's moving that quickly.

Someone mentioned fuel trims maxing out on another forum. If u look closely, you'll see this happens at the rev limit when throttle closes. We did this for a reason.

Next time out, we will mount the Hoosier drag radials. They are stickier and 8lbs a tire lighter. This road still isn't ideal due to its bumpiness. The tires were still skipping/spinning slightly. You can see this on the tach at the top of 4th gear. Hard to find a perfect road when the car is making this much real world power. And by "real world", I mean being able to back up the runs in the same datalog, let alone the same night