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Shift Sector Single Turbo Vids?
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11-29-2012, 04:15 PM | #287 |
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The fuel pump 'science experiment' in Shiv's car is much different than the LPFP upgrade that's currently running in many cars ATM. Just ask anyone who got the new Vishnu/FFtec LPFP upgrade, their trunk looks normal.
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11-29-2012, 04:27 PM | #288 |
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Yeah, they did a really nice job with this. Factory type connectors, no cutting the lines like other solutions. I'm really happy with it and have been running 100% e85 for the past three weeks. The only time I ran pump fuel was on my way home from Shift S3ctor. Ended up getting 29 mpg on that long drive...
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11-29-2012, 04:28 PM | #289 |
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My tiny 135i trunk is normal
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11-29-2012, 05:06 PM | #290 | |
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11-29-2012, 05:33 PM | #291 |
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How is this better than running the E85 pump DIY? The E85 pump already turns the HPFP into the limitation, unless of course this runs higher pressure or is placed closer to the engine, but then how does it cool?
Sorry to derail. |
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11-29-2012, 05:50 PM | #292 |
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This is an in-line fuel pump system that retains all the factory fuel syphons. This works in conjunction with the factory low pressure fuel pump. The standard Walbro 400 that others are using alone doesn't flow well at the higher fuel pressures which are required for this application. Our in-tank, fuel system runs the fuel pumps in series, substantially increasing fuel volume at the high fuel pressures this application demands.
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11-29-2012, 06:41 PM | #293 | |
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The Walbro E85 pump (the $179 one in the DIY) is rated for 355lph @ 70psi, which should be good for around 650whp on E85 without meth using a BSFC of .70. Of course, they make larger in tank pumps that will install just as easily. This one was just a good fit based on the cost and general specs and has been well proven in other applications. Mik,e |
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11-29-2012, 06:49 PM | #294 |
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are the ST guys beating the RB or standard turbo guys on acceleration? For me at some point you are going to get traction issues as we push the envelope forward have tuners reached the upper limit of what the n54 can put down on the road?
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11-29-2012, 06:57 PM | #295 |
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yes the st are raking the RB guys over the coals. the st cannot be foxed with except by a fox body 5.0 on NAWS
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11-29-2012, 07:01 PM | #296 |
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FBIS is making 650whp and with his R888's he's able to hook in second gear easily in his 6mt. He has the suspension mods, the dss axles, and an LSD to let him do so though.
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11-29-2012, 07:06 PM | #297 |
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So there comes a point where without some major upgrades you are going to struggle to put it down? Is there a possibility then that a FBO car without major suspension mods,trick tyres may as well settle at 550bhp?
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11-29-2012, 07:08 PM | #298 |
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that's my plan exactly
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11-29-2012, 07:32 PM | #299 | |
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11-29-2012, 07:48 PM | #300 |
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just got back from a week in Tahoe with no internet. It felt great.
I'm making more than my initial 573WHP without all all the "supporting" mods (axles, sticky tires, coil overs ...) and doing just fine. Its fun lighting up the rears, especially on those lovely butterfly on ramps in the rain. Just to make a quick comment ... I'm incredibly happy with the performance gains of the single turbo vs. my FBO+meth setup. From my subjective butt dyno, i know i'm making more power and having a lot more fun. I almost forgot what wastegate rattle sounded like (until I was walking in the crosswalk and hear it again - yuck). On the day to day basis, its just like any other car sitting in commuter traffic ... except when you get to open it up and then left off quickly - the sound of the turbo is pretty fun to listen to.
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11-29-2012, 08:36 PM | #301 | |
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11-29-2012, 09:44 PM | #302 | |
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11-29-2012, 11:17 PM | #303 | ||
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Drives: 2007 335i Coupe
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11-30-2012, 09:12 AM | #306 | |
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355lph @70psi is very optimistic since Terry's DIY pump is not very well thought out. He uses a T fitting for one of the large siphons which hijacks a large portion of the pumps output. And who says the stock pump was that bad anyway? He removed a perfectly good stock pump and replaced it with a bigger pump, then promptly cut it's capacity in half with all the DIY hardware store plumbing. There's still a big question about how he handles the various siphons, plus the issue with the fuel level sender has never been addressed. There's plenty of datalogs from Terry's DIY pump showing that it only helps a little, hardly worth it for all the trouble. The fuel system on the 335 is just that; a system. Any upgrade must be integrated with the other components in the fuel system before it can be considered a true upgrade. |
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11-30-2012, 09:44 AM | #307 | |
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Can you point me to where his Low pressure was not meeting requested? |
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11-30-2012, 10:03 AM | #308 | |
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