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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Vishnu/FFTEC Single Turbo: New Overall N54 World Record



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      05-10-2012, 04:40 AM   #1
shiv@vishnu
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Smile Vishnu/FFTEC Single Turbo: New Overall N54 World Record

In addition to breaking the e9x stock turbo record today at Sacramento Raceway (85F with a DA of ~2000'), we also broke the overall N54 record. This was our first day testing with new bias ply Hoosier slicks. Still some work to do before it does a clean bog-free launch (which is currently costing us ~0.2s in the 60'). Still, it ran well and put down a 11.105s @ 130.48 pass on the second run of the day. Running on real slicks is very different than running on drag radials. They suck up some power/mph up top since they have a much higher rolling resistance. And the tend to wander a bit when under power. But they offer amazing traction off the line. So much that, for the first time ever, the car is bogging slightly at the launch. Even when 2-stepping at 5500rpm! Just need to make some changes to the 2-step logic to address this. Hopefully next week, we'll go back with this sorted and run that 10.9 that the car should easily be able to run. The car is running 104+MPH in the 1/8th mile. That's 7mph faster than the previous record holder that ran a 11.108 with a 6AT launching in 2nd gear. So yes, the single turbo car will run a lot quicker at this same power level once we work out the launch.











Hooser drag radials (left) vs Hoosier drag slicks (right):


Some fender rolling required:


With the new 17x9.5 ARC rims (17.5lbs!) in back:


At the track:


Both world record breaking cars:

Last edited by shiv@vishnu; 05-10-2012 at 05:01 PM.
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      05-10-2012, 05:01 AM   #2
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wow congratulations, that sure is fast
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      05-10-2012, 05:04 AM   #3
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the private first video is killing me I want to see in car!
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      05-10-2012, 06:50 AM   #4
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gr8 time! You'll be in the 10's in no time.
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      05-10-2012, 06:51 AM   #5
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bog really wasnt that bad but keeping it above 4,000rpms all of 1st gear would surely help, slip that clutch a little Shiv. Treat it as a consumable.

good job, now lets see those trap speeds get closer to 135.
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      05-10-2012, 09:16 AM   #6
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Nice runs...

Mike
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      05-10-2012, 09:20 AM   #7
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Please don't take this as a knock, but that RB turbo car was nowhere near maxed out when it trapped 11.1@127.

I'm sure once you get your traction issues worked out, it will crack 10s and rape RB turbo cars!
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      05-10-2012, 09:26 AM   #8
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Great runs! I'm excited to see how the 6at does launching in 2nd gear!
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      05-10-2012, 09:35 AM   #9
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Quote:
Originally Posted by themyst View Post
Please don't take this as a knock, but that RB turbo car was nowhere near maxed out when it trapped 11.1@127.

I'm sure once you get your traction issues worked out, it will crack 10s and rape RB turbo cars!
How exactly was that RB turbo 6at not close to maxed out when it that that 11.1?
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      05-10-2012, 09:39 AM   #10
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WOW. Congratulations again!!
Really fast car for a BMW.
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      05-10-2012, 09:44 AM   #11
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Quote:
Originally Posted by Sniz View Post
bog really wasnt that bad but keeping it above 4,000rpms all of 1st gear would surely help, slip that clutch a little Shiv. Treat it as a consumable.

good job, now lets see those trap speeds get closer to 135.
It was 85f degrees yesterday when the car ran. And sac raceways recalibrated timing system is a good 2-3mph slower than other tracks. So I think all it would take to see 135mph trap speeds is a cooler day running at another track. Also, I was pretty surprised by how much power those bias ply slicks suck up at 100+mph. It's like driving on flat tires. But the amount of grip they provide off the line is staggering. The change I'm making to the 2-step roll allow me to slip the clutch during the launch which hopefully will get rid of that bog. Too much grip isn't a bad problem to have though. Never thought we would be fighting that "problem".
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      05-10-2012, 09:52 AM   #12
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Omg. Yes please.
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      05-10-2012, 09:54 AM   #13
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Wow Shiv, that looks damn fun! Nice work, 10's are in the near future...
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      05-10-2012, 09:56 AM   #14
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What horsepower was the car making on that pass?
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      05-10-2012, 09:58 AM   #15
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Congrats on the record! What boost was this at? What is the race weight? Looks like it hooks really well and rolls out, overall a really clean pass... So I suspect fairly low boost.
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      05-10-2012, 09:59 AM   #16
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I see 10's coming very soon! Great run Shiv!
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      05-10-2012, 09:59 AM   #17
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Congrats Shiv and crew. You guys never cease to amaze me.
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      05-10-2012, 10:01 AM   #18
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Thats one fast 335i.
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      05-10-2012, 10:05 AM   #19
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Quote:
Originally Posted by shiv@vishnu View Post
How exactly was that RB turbo 6at not close to maxed out when it that that 11.1?
19 psi tapering to 16? Definitely wasn't maxed out. It had a ton more in the mid range and another 2-3 psi at redline. With a proper Cobb fuel base map stacking a piggyback there's surely more in there. Without a ton of meth either!

If he didn't grenade his trans I believe there were 10s in it.

Apples to oranges though, if your car was an auto it would run 10s on stock suspension with very little drama, assuming it held up.
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      05-10-2012, 10:12 AM   #20
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High 10s ?

We want mid-10s, and my fearless prediction is you'll be doing them by the end of this year.

This is one amazing car, Shiv !
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      05-10-2012, 10:24 AM   #21
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Dropping clutch at 5500. That's pure madness! Not bogging either?! Wow.
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      05-10-2012, 10:44 AM   #22
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Quote:
Originally Posted by themyst View Post
19 psi tapering to 16? Definitely wasn't maxed out. It had a ton more in the mid range and another 2-3 psi at redline. With a proper Cobb fuel base map stacking a piggyback there's surely more in there. Without a ton of meth either!

If he didn't grenade his trans I believe there were 10s in it.

Apples to oranges though, if your car was an auto it would run 10s on stock suspension with very little drama, assuming it held up.
His car made over 510whp with very little top end power roll off. And within 8whp of my max tune ASR car which ran 20psi to redline. Running more boost on small frame twin turbos doesn't results in more power when the exhaust housing is the main power restriction. Same thing applies to stock turbos but at a lower power level. I've tuned enough RB/ASR/TD sized turbos to know that you aren't going to get much more out of them regardless of how high you crank up that boost. They are wonderful turbos if you are looking to make up to 500whp with an aggressive tune. And that is more than enough for most people. But let's not pretend they are something they are not.
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