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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 Single Turbo Road Testing, Walkaround, Procede Datalogs



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      02-10-2012, 02:21 AM   #89
Rob@RBTurbo
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You should go ahead and do some 11psi/14psi/17psi runs tomorrow!! Do it before something bad happens!!!

As for sound most all changes are due to the turbine housing (it acts as a muffler of sorts). There are big sound changes just from modifying housings, let alone changing them out altogether.
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      02-10-2012, 02:28 AM   #90
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fuuuuuuck!!! das teh legitness w/ a whole lotta quickness, gotDAMN!

outstandin results fellas.
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      02-10-2012, 03:30 AM   #91
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Quote:
Originally Posted by Robert@vishnu View Post
Come to the air strip event and you will see Paul's R34 in action and SOME!!!!
Canīt wait to se the videos

Could be cool just for a comparison to run it against a stock turbo fbo and tweek itīs proceed to run simmilar boost/ign to the single

Now how do I get the sound into my I-phone as the alarm
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      02-10-2012, 04:15 AM   #92
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As an N55 guy, that boost curve makes me sad. Smashing work gents.
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      02-10-2012, 04:36 AM   #93
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Love your work.
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      02-10-2012, 05:14 AM   #94
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Great work! Can't wait to see dyno sheet!
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      02-10-2012, 08:22 AM   #95
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Post those graphs up in csv format
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      02-10-2012, 08:29 AM   #96
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I'm sure you do, but I'm guessing none of them are seeing over 10:1 compression.

Quote:
Originally Posted by ETS Michael View Post
I still think 600whp on pump you can do it We pull it off the on the supra's all the time, no reason the N54 can't do it hahah. busting your balls. Good results man.
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      02-10-2012, 08:41 AM   #97
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Plus, once you're able to actually control the WG with the Proceed the boost curve should look a little better on the bottom end.

From the video though, I would say this car could still benefit from a gearing change, at least to 3.4 or maybe even a little higher. That would certainly help with the bottom end build to 3500 rpms. All the new pony cars will be running at least a 3.4, and I believe the ZL1 will be supporting a 3.7.



Quote:
Originally Posted by shiv@vishnu View Post
Transitional response is terrific if revs are above 3500rpm. Easily as good as upgraded twins. Above 4500rpm, i'd say it is even better. But what really surprised me is how fast boost builds post shift (5000+RPM). Noticeably better than either stock or upgraded twins. I suspect this has a bit to do with not needing to breathe through those crummy flat inlet pipes anymore.

Below 3000rpm, however, there is no comparison between twins and this turbo. If you are used to that low end grunt, a big single is going to be disappointing. But above 3000rpm, the engine feels and sounds much more effortless and smoother with the single that I think many people will be happy to change their driving habits.




Yes, the turbo is mounted high enough to avoid having to use an oil pump. So needless to say, no check valve either. We are using a simple gravity drain

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      02-10-2012, 08:42 AM   #98
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Keep up the good work and thanks for sharing.
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      02-10-2012, 08:54 AM   #99
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Well done! Congrats to Shiv and the Vishnu team!
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      02-10-2012, 09:34 AM   #100
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now that is an update......awesome work Team Vishnu and FFTEC!
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      02-10-2012, 09:52 AM   #101
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impressive. most impressive.
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      02-10-2012, 09:57 AM   #102
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wow I wish I could shift this well.
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      02-10-2012, 10:27 AM   #103
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Quote:
Originally Posted by c4s335i View Post
Plus, once you're able to actually control the WG with the Proceed the boost curve should look a little better on the bottom end.
They've had control over the WGs for quite some time, since rev 2 release I think? Rattle fix is a good example of a recent implementation.

I beleive the single uses a haltech boost control solenoid in conjunction though. They probably bypassed the stock solenoids and use this to control the single wastegate?
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      02-10-2012, 10:55 AM   #104
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Quote:
Originally Posted by Tzu View Post
They've had control over the WGs for quite some time, since rev 2 release I think? Rattle fix is a good example of a recent implementation.

I beleive the single uses a haltech boost control solenoid in conjunction though. They probably bypassed the stock solenoids and use this to control the single wastegate?
they've had full control over WGs on teh stock or upgraded twins. shiv hasn't fully gained control of the single wastegate yet though, see below

Quote:
Originally Posted by shiv@vishnu View Post


It will be a few days before I have full Procede boost control. Until then, i'm just running a silly bleeder. So no sense in dyno testing now since I don't even have the boost curve I want. Soon though....


shiv
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      02-10-2012, 11:33 AM   #105
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Beautiful work, Shiv & team ...congrats !!!

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      02-10-2012, 12:00 PM   #106
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Quote:
Originally Posted by shiv@vishnu View Post
Thanks for the kind works guys. But again, it really was a team effort with the boys at FFTEC. They took an idea and actually turned it into a real product. We were pretty careful with how we designed this kit. Which is probably the reason it started up first try, code free and ready to be flogged just hours later!

Shiv

not with out the help from your brain.
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      02-10-2012, 12:08 PM   #107
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single turbo

We have a couple customers that has full bolt-on with PWM meth kit. If our single turbo were to show up we will do some run to show people the comparative differences between our big single to a full potential stock turbos.

Quote:
Originally Posted by Aridk View Post
Canīt wait to se the videos

Could be cool just for a comparison to run it against a stock turbo fbo and tweek itīs proceed to run simmilar boost/ign to the single

Now how do I get the sound into my I-phone as the alarm
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      02-10-2012, 12:27 PM   #108
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this is awesome stuff Shiv, spinning in 3rd gear w an LSD is the sign of some power. I almost lost my M3 yesterday in 4th........scary! Then again i'm running on borrowed bald 245s.

the boost you are running should indicate power being well into the 500whp range. Keep it up!! Can't wait to see where the n54 goes to in 2012. Also slightly rooting for you to bend a rod or something . POWA!!!
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      02-10-2012, 12:29 PM   #109
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Quote:
Originally Posted by Robert@vishnu View Post
We have a couple customers that has full bolt-on with PWM meth kit. If our single turbo were to show up we will do some run to show people the comparative differences between our big single to a full potential stock turbos.
That would be great. Make sure to do a run against another MT for a fair comparison if possible.
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      02-10-2012, 12:29 PM   #110
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Quote:
Originally Posted by i2iSTUDIOS View Post
wow I wish I could shift this well.
I was thinking the same thing. If he shifted any harder, he would throw the knob into the back seat Shiv, do you have a SSK?
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