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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 > PUMP GAS: Vishnu/FFTEC Single Turbo 6466 @ 21psi



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      04-17-2013, 08:24 PM   #23
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lol... it's a 6466. it MAKES power
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      04-17-2013, 08:27 PM   #24
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Shiv, what is the limiting factor in this case that causes you to add meth when boosting more? Is it a temperature issue or is the car running out of fuel?

Oh and VERY nice torque curve you got there!
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      04-17-2013, 08:31 PM   #25
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Wow. That's impressive. Do you consider this to be safe and daily drivable? I would be satisfied.
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      04-17-2013, 08:33 PM   #26
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Quote:
Originally Posted by chili36 View Post
Looks like someone figured out what the Vargas fueling solution is.
It was only a matter of time and likely better in the long run. Competition is only going to further the platform.
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      04-17-2013, 08:37 PM   #27
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It was only a matter of time and likely better in the long run. Competition is only going to further the platform.
No doubt.
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      04-17-2013, 09:25 PM   #28
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Anyone looked into bumping up the rev limiter on these? Power and is still climbing.
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      04-17-2013, 09:46 PM   #29
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Anyone looked into bumping up the rev limiter on these? Power and is still climbing.
There is plenty more power to be hand on 91oct but raising the rev limiter or running more boost. But the nature of low octane/high power tuning is just knowing when to stop. Hopefully before it's too late. I always said that there is no glory in making big pump gas numbers as they typically reflect a tuner who doesn't quite understand the risk/reward scenario or the fact that engines can see much more stress on the road than they do on a dyno. So tuning on the dyno for max power (when octane is limited) is just stupid.

Even this 600+whp result is something that I'm not entirely comfortable with. Sure it can do this on a steady state 4th gear WOT pull on a cool evening. But environment conditions (and fuel quality) can vary day to day, month to month, etc,. This is the reason I would still recommend running 19psi on 91oct. This would bring power down to 580-ish WHP but give you a nice margin of safety against knock. I know it's not as glorious but neither is trying to make a point that isn't worth making.

In the world of tuning, you don't get something for nothing. Their are always risks involved with making more power. The job of the tuner is to minimize them by running race gas, methanol, etc,. Fortunately, using these methods you can make far more power with far less risk. But on the internet, not everyone will think like a tuner. And they don't need to because they don't face the consequences of poor judgement. So they just want to see big numbers. Well here you go... Lol

shiv

Last edited by shiv@vishnu; 04-17-2013 at 10:04 PM.
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      04-17-2013, 10:03 PM   #30
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Wow! Makes me regret getting rid of my '09 335i. I have no idea who has the better long-term solution but hats off to both Shiv and Tony for upping the game. I envision a n54 project car in the very near future. Thanks guys.
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      04-17-2013, 10:40 PM   #31
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Amazing!!
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      04-18-2013, 02:38 AM   #32
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Quote:
Originally Posted by shiv@vishnu
Stock. Only fuel system mod is our in-line LPFP.
Interesting. Any plans on using an upgraded HPFP for more power or is it not even necessary? I'm only referring to 91 pump, no meth scenario.
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      04-18-2013, 03:21 AM   #33
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Nice numbers in pump gas, as a daily driver of my bmw, this would be the only hp numbers that i care about. I mean the right psi with the safiest way for the engine.
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      04-18-2013, 03:28 AM   #34
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Nice numbers in pump gas, as a daily driver of my bmw, this would be the only hp numbers that i care about. I mean the right psi with the safiest way for the engine.
It really depends on what someone considers a daily. For me, it's the curve below 4K RPM and both the ST and VTT S3 are not really great performers in that area when compared to OEM or upgraded stock frame turbos.
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      04-18-2013, 03:53 AM   #35
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Originally Posted by shiv@vishnu View Post
There is plenty more power to be hand on 91oct but raising the rev limiter or running more boost. But the nature of low octane/high power tuning is just knowing when to stop. Hopefully before it's too late. I always said that there is no glory in making big pump gas numbers as they typically reflect a tuner who doesn't quite understand the risk/reward scenario or the fact that engines can see much more stress on the road than they do on a dyno. So tuning on the dyno for max power (when octane is limited) is just stupid.

Even this 600+whp result is something that I'm not entirely comfortable with. Sure it can do this on a steady state 4th gear WOT pull on a cool evening. But environment conditions (and fuel quality) can vary day to day, month to month, etc,. This is the reason I would still recommend running 19psi on 91oct. This would bring power down to 580-ish WHP but give you a nice margin of safety against knock. I know it's not as glorious but neither is trying to make a point that isn't worth making.

In the world of tuning, you don't get something for nothing. Their are always risks involved with making more power. The job of the tuner is to minimize them by running race gas, methanol, etc,. Fortunately, using these methods you can make far more power with far less risk. But on the internet, not everyone will think like a tuner. And they don't need to because they don't face the consequences of poor judgement. So they just want to see big numbers. Well here you go... Lol

shiv
Good stuff man!
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      04-18-2013, 04:23 AM   #36
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It really depends on what someone considers a daily. For me, it's the curve below 4K RPM and both the ST and VTT S3 are not really great performers in that area when compared to OEM or upgraded stock frame turbos.
Agree with that.
any chance to see a single spooling from 2.5-3K? even to make only 500WHP or less. With ceramic bearings it should be possible!?
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      04-18-2013, 04:40 AM   #37
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Agree with that.
any chance to see a single spooling from 2.5-3K? even to make only 500WHP or less. With ceramic bearings it should be possible!?
Might be possible with a twin scroll turbo...
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      04-18-2013, 07:48 AM   #38
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Very glad this was posted. How would the 6262 compare on around the same boost on pump gas only?
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      04-18-2013, 09:21 AM   #39
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Originally Posted by marconi118 View Post
Agree with that.
any chance to see a single spooling from 2.5-3K? even to make only 500WHP or less. With ceramic bearings it should be possible!?
Might be possible with a twin scroll turbo...
I'm sorry for your misfortune man, but that seriously made me LOL.
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      04-18-2013, 10:59 AM   #40
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600 on pump is nice. I really only want 500ish wheel on pump and I would be happy. These turbo kit wars are really heating up.
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      04-18-2013, 11:03 AM   #41
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nice work on the n54 front over the last year. good job here shiv.. I'd be curious to see a dyno with the 6466 on 91 without meth.
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      04-18-2013, 11:09 AM   #42
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nice work on the n54 front over the last year. good job here shiv.. I'd be curious to see a dyno with the 6466 on 91 without meth.
These results are on Map1 (without meth)
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      04-18-2013, 06:02 PM   #43
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Agree with that.
any chance to see a single spooling from 2.5-3K? even to make only 500WHP or less. With ceramic bearings it should be possible!?
Not sure what's in the Precision lineup, but a Garrett GTX3076R could easily do this. It won't fit the FFTEC manifold, though. I'm sure Precision offers something that would mount on this kit.
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      04-18-2013, 06:32 PM   #44
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Not sure what's in the Precision lineup, but a Garrett GTX3076R could easily do this. It won't fit the FFTEC manifold, though. I'm sure Precision offers something that would mount on this kit.
my thoughts exactly, gtx30r would do the trick and still over 500whp on pump for sure.

for reference my gt35r w a log manifold spools in the 2800-3200rpm range depending on load. 3.2 lowered compression engine. I dont see why the n54 would not be able to do the same.
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