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  1. #126
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    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    EXACTLY my thoughts. Turkeybaster somehow thinks he can easily ditch the O2 sensors and run open loop all the time. Idiotic idea at best.
    It's called O2 sims. Ditching would mean, leave em in there to get fouled up by the lead.

  2. #127
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    Click here to enlarge Originally Posted by Turkeybaster115 Click here to enlarge
    Guy, the recalls weren't sent out in the mail. BMW doesn't do things like that.

    Full stop. No one said that. At all. And it's completely besides the point, quit deflecting.

    Over the span of existence of the N54 platform, BMW has had to deal with warranty repair issues. (I know right? Dealers repairing cars? Pffft). So in their system, they find over time that certain parts suck and attempt to find another manufacturer or maybe press the manufacturer to upgrade/fix the commonly failing part. Well guess what? BMW, like most manufacturers, CHANGES THE PART NUMBER WHEN RECEIVING A NEW PART IN INVENTORY. They do this in order to distinguish between parts in order to not get them confused. Sounds like a smart idea that would save them money considering they're already having to pay their mechanics for the install and the manufacturer for this part. So they update them, and put things like 'ENDED' on the part to notify a service center that the part is no longer used.

    It is already well-known that the current HPFP model has a fuel flow problem at a certain power level (which is one reason why Shiv was reduced to using a LOT of meth to put up the numbers he did). While they MIGHT get slightly better flow out of the newest model (assuming they don't have it already), Vargas/DZenno have to tune this setup for the median N54 platform user; there will be glory-runs later, and most of us doubt a HPFP update (again assuming they don't have the newest model) will do much as the physical dimensions (inlet diameter, pump design) are either identical or very similar.

  3. #128
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    Click here to enlarge Originally Posted by Turkeybaster115 Click here to enlarge
    It's called O2 sims. Ditching would mean, leave em in there to get fouled up by the lead.
    Sure thing. Point out where we can find a O2 sim for a 5/6-wire O2 sensor; oh and lemme know how well that works out with the DME (considering something as simple as putting both O2 sensors on a single downpipe causes it to go bonkers).

  4. #129
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    Click here to enlargeClick here to enlargeClick here to enlarge...Click here to enlarge
    [SIGPIC][/SIGPIC]

  5. #130
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    Wow, excellent work!
    2015 F82 M4 - DCT - YMB
    2008 E90 335xi - AT - TSM

  6. #131
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    That is some sick power on 91. The power band is nuts too... Keep it up guys, can't wait to see more

  7. #132
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    2 out of 2 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    Congratulations to everyone who worked on this project! Impressive!

    @VargasTurboTech : What is your projected production capacity for Stage 2 turbos? The biggest turn-off for me to get RBs is the super long waiting list.
    This first batch is 25 sets. We have pre-sold almost all of them, but just waiting for the beta numbers / make sure everything goes trouble free before I ship the rest. The betas are there for this reason. To test the turbos and make sure everything goes smooth. As soon as I get the green light I can start shipping the rest. I think I have a one or two sets unsold if you want to grab one of those just email me.

  8. #133
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    I see they advertise the new Alpina B3 biturbo (F30) with a upgraded "performance" fuel pump.

    Maybe they found a solution and adapted it to the new model. I believe they use a N55 engine with N54 twin turbo's.

    Somebody know more about this pump?

  9. #134
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    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    If low pressure is really going up to 80-90psi then he is overrunning the regulator with his pumps which should also be corrected. I'm not sure how the DME reacts to seeing higher than target low pressure like that. It might lower the pump PWM. Keep an eye on it. Ideally you'd want to bias the low pressure signal back to the dme to keep it observing around 72psi. If 90psi isn't enough try 100psi, etc. His parallel fuel pumps can probably support it. A higher low pressure should allow the high pressure pump to increase flow. Remember a wider line won't do anything. If you had a volume problem, low fuel pressure would drop. It's read at the high pressure pump inlet. But while he is rigging up a new regulator there are a few bits of 1/4" line in tank that should be replaced for 5/16" line.
    I made mention of this a while back that it overruns the regulator, but it only does so as the voltage increases with RPM as the alternator gets spun up. Which is pretty much what I was hoping for. There are pick up problems using both pumps when levels get really low, the company I sent the tank and bucket too are still on the ball making the dual pump drop in to solve all this. I can tell you exactly how the DME reacts to it. It stores a fuel pump code in the system but thats it. Never trips a light while driving, etc. It will tell you when you shut your car off to check your fuel pump, but its a courtesy reminder as it assumes the pump is going out.

  10. #135
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    That is simply impressive, add to that the fact it was done on 91 octane... awesome!

  11. #136
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    Now that the pisswasser is out the way... GET SOME 93 IN THE TANK AND GET THE METH FLOWING Click here to enlarge
    Click here to enlarge
    MOTIV750, MOTIV P-1000 PI, MOTIV/FUEL-IT! low pressure fuel system, AEM EMS/COBB AP, Aquamist HFS-3, ETS FMIC, SPEC stage 3+ clutch/SS flywheel, BC Racing coilovers and VMR wheels wrapped in Hankook RS3s.

  12. #137
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    As far as the Xi questions. The way we routed our downpipes, one on top and one on the bottom, we think it might work on the XI as is. But if not its just a matter of designing new DP's for the XI no biggy. You guys will not be left out of the production run. If DP's need to be changed this will be done during production and we will offer 2 kits a RWD and an AWD version.

  13. #138
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    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
    391 / 435 sounds slightly below what an FBO 91 + Meth car should be putting down (prob a nice ~25 WHP deduction), so the dyno is probably on target while being just a little conservative (which I'd rather have then promising HP that isn't actually there).

    The WOT tuning sounds like it's going flawless since not a single CEL or fault code was thrown. Def cannot wait to see some drivability videos that show when the boost comes on & how quickly the power can ramp up when you put your foot down Click here to enlarge


    NOW if I only had an MT N54 that could put up with these numbers Click here to enlarge
    Buy mine, it already has a quaiffe LSD, helix FMIC, and only 55k miles...should be sold very soon as I have a serious buyer looking at it next weekend...my car is perfect for someone looking to build a sick n54Click here to enlarge
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    ESS 6XX kit

  14. #139
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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    As far as the Xi questions. The way we routed our downpipes, one on top and one on the bottom, we think it might work on the XI as is. But if not its just a matter of designing new DP's for the XI no biggy. You guys will not be left out of the production run. If DP's need to be changed this will be done during production and we will offer 2 kits a RWD and an AWD version.
    Excellent Click here to enlarge

  15. #140
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    VTT & PTF ftmfw!!
    E92 FBO Cobb stage 2+

  16. #141
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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    I made mention of this a while back that it overruns the regulator, but it only does so as the voltage increases with RPM as the alternator gets spun up. Which is pretty much what I was hoping for. There are pick up problems using both pumps when levels get really low, the company I sent the tank and bucket too are still on the ball making the dual pump drop in to solve all this. I can tell you exactly how the DME reacts to it. It stores a fuel pump code in the system but thats it. Never trips a light while driving, etc. It will tell you when you shut your car off to check your fuel pump, but its a courtesy reminder as it assumes the pump is going out.
    The fuel pump controller uses a variable PWM signal to control pump output in an attempt to keep low pressure around 72psi. So one side effect to the DME seeing say 90psi might be it reduces PWM which is the opposite of what we'd want it to do. You can monitor voltage at the pumps to see exactly what effect it's having. Having your low pressure so high is probably boosting your fueling capacity over what we normally see at only 72psi. And we're hoping going to say 100-120psi will result in even more potential for the high pressure pump. Ideally though, we'd keep it around 72psi and have a ported high pressure pump in place.

    On the bucket, fuel that leaves the bucket *should* only be able to travel either A) in to a cylinder or B) back in to the bucket. So the only way to exhaust the bucket should be if you're making so much power the fuel is going in to the engine faster than the bucket can fill itself through the siphon valve. You could rig up a camera with the tank open on the dyno to video what is happening in the bucket when the fuel levels are low and from that we can figure out what the issue is and how best to correct it.
    Burger Motorsports
    Home of the Worlds fastest N20s, N54s, N55s, N63s, S55s, and S63s!

    It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please see http://www.burgertuning.com/emissions_info.html for more information on legal requirements related to use of BMS parts.

  17. #142
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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    This first batch is 25 sets. We have pre-sold almost all of them, but just waiting for the beta numbers / make sure everything goes trouble free before I ship the rest. The betas are there for this reason. To test the turbos and make sure everything goes smooth. As soon as I get the green light I can start shipping the rest. I think I have a one or two sets unsold if you want to grab one of those just email me.

    Awesome! Thanks for the heads up. My wastegates have recently began to show first signs of rattling. Depending on how things go, I might just upgrade to S2 next year when tuning gets completely sorted out.
    From all the things I've lost,
    I miss my mind the most!
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  18. #143
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    Click here to enlarge Originally Posted by Turkeybaster115 Click here to enlarge
    It's called O2 sims. Ditching would mean, leave em in there to get fouled up by the lead.
    lol it makes no sense to try to run this DME open loop. Besides if fueling isn't a problem there are plenty of cheap great unleaded fuels these days. Like E85, E98, etc.
    Burger Motorsports
    Home of the Worlds fastest N20s, N54s, N55s, N63s, S55s, and S63s!

    It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please see http://www.burgertuning.com/emissions_info.html for more information on legal requirements related to use of BMS parts.

  19. #144
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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by Terry@BMS Click here to enlarge
    The fuel pump controller uses a variable PWM signal to control pump output in an attempt to keep low pressure around 72psi. So one side effect to the DME seeing say 90psi might be it reduces PWM which is the opposite of what we'd want it to do. You can monitor voltage at the pumps to see exactly what effect it's having. Having your low pressure so high is probably boosting your fueling capacity over what we normally see at only 72psi. And we're hoping going to say 100-120psi will result in even more potential for the high pressure pump. Ideally though, we'd keep it around 72psi and have a ported high pressure pump in place.

    On the bucket, fuel that leaves the bucket *should* only be able to travel either A) in to a cylinder or B) back in to the bucket. So the only way to exhaust the bucket should be if you're making so much power the fuel is going in to the engine faster than the bucket can fill itself through the siphon valve. You could rig up a camera with the tank open on the dyno to video what is happening in the bucket when the fuel levels are low and from that we can figure out what the issue is and how best to correct it.
    Terry, thanks for the tips, and info. You really have a much broader sense of this fuel system then I do. You really paved the way for a lot of these DIY upgrades. In this instance I'm pretty sure its neither of those. The way the pumps were mounted I was having a hard time getting the black tubes that refill the bucket to stay snapped in place. Which means when the popped out of their holder (which they did once already, and I put them back) the bucket would not be getting refilled and its just pulling from the tank. I did not want to reopen the tank right now so we just kept fuel above 1/8 tank and had no issues. These are all temp solutions to issues that will be addressed.
    Last edited by Tony@VargasTurboTech; 03-16-2013 at 08:09 PM.

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    Tony, can you get Rob and Ken Block to do a Gymkhana style video in an upgraded turbo 335i...? It would do a lot for the popularity of this platform. Click here to enlarge
    2007 335i (100% stock with mods)

    N54 is not a German 2JZ lol

  21. #146
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    2 out of 2 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by Q4P Click here to enlarge
    Tony, can you get Rob and Ken Block to do a Gymkhana style video in an upgraded turbo 335i...? It would do a lot for the popularity of this platform. Click here to enlarge

    +100
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    How much boost can these turbos take? If your running 24-25psi already on 91 is there still plenty of head room once you start testing with e85/meth? I know timing was keep low during the 91 tune, just curious how much more you can crank these baby's up to.

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    Click here to enlarge Originally Posted by Turkeybaster115 Click here to enlarge
    It's called O2 sims. Ditching would mean, leave em in there to get fouled up by the lead.
    Why, why, dear god why would you get rid of closed loop at wot? I've been dealing with open loop adjustments, ve tables, acceleration ve adder tables, open loop fueling formulas, etc etc for so long on some of my projects that this idea actually offends me. Never, ever again will I build a car that doesn't incorporate closed loop fuel learning at wot.

    Never. Again.

    Sort of like carburetors, but even more hate.

  24. #149
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    Hey tony, is there any possibility of this fitting on a 135i?
    Click here to enlarge
    MOTIV750, MOTIV P-1000 PI, MOTIV/FUEL-IT! low pressure fuel system, AEM EMS/COBB AP, Aquamist HFS-3, ETS FMIC, SPEC stage 3+ clutch/SS flywheel, BC Racing coilovers and VMR wheels wrapped in Hankook RS3s.

  25. #150
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    3 out of 3 members liked this post. Yes Reputation No
    There is discussion on e90 that Shiv and Tony might have a dyno shoot out. If Shiv and Tony actually pull off a dyno shoot out in a couple months, huge props to both of them being friendly and letting their products do the talking.
    2015 - Cayman GTS - Stock
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