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sonofthehill sets his sights on MK ULTRA

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Old 02-06-2018, 11:31 AM
  #981  
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Yeah, just curious, thanks again Vlad!
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Old 02-06-2018, 07:49 PM
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Originally Posted by sonofthehill
Yes a 1:1 boost reference fuel pressure regulator.

Nothing too extreme, 60psi base and a boost reference to keep the fuel flowing during high boost.

My question is, can I just run a charge pipe reference instead of a manifold reference to keep my fuel pressure at 60 psi, when not in boost?
No you cannot. When the turbo spools up a little against a partially closed throttle, you will get extra fuel, as the charge Absolute Pressure will be greater than the Manifold Absolute Pressure. Next time, under a different load scenario, the same RPM and Manifold might be at a more open throttle, so then the MAP would be closer to the Charge Pipe. Now LEAN.

I really believe tuning would be a total nightmare.
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Old 02-06-2018, 10:10 PM
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40psi fuel pressure at idle would be totally fine. NAs run 43.5 psi, and Mustangs (which run the same injectors) run at 38psi.
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Old 02-06-2018, 11:11 PM
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Originally Posted by 18psi
fuel efficiency? like from poor atomization due to lower pressure? won't even be noticeable
Yep, started, idled, and ran just fine with a manifold reference. There may be some difference in my log but it wasn't noticeable.

What was noticeable is that I am now pig rich in boost I need to look at my log and fill up my tank now. Thanks again everyone!
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Old 02-09-2018, 07:46 PM
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Wow, just wow! Is almost looks like someone dropped an iron on my VE table and it's still rich in high boost. I think I am logging about 70% injector duty way rich now, where I was at 115% barely able to hit my AFR target before. It is amazing how much difference the pump and regulator have made.

​Haven't turned my EBC on or been past about 5500 RPM. I basically stomp the throttle and watch my AFR dip into the 10's, then let off. Go examine my log, adjust and repeat. Won't be long now.
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Old 02-09-2018, 10:55 PM
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Allofit!!
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Old 02-10-2018, 08:27 PM
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Not yet. Finally comfortable stomping on it without worrying about hydro locking the thing. Still a little rich, but almost there, don't want to **** around above 250 kpa. Still a ton left on the table for the original Flow Force injectors with a proper pump and regulator. Amazing difference! Thanks for the fueling bits Andrew and George!

And yes, it is noisier than my Wally 190. I mounted my regulator under the fuel pump access panel and I think the regulator itself is pretty noisy.
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Old 02-14-2018, 09:50 PM
  #988  
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Checking measurements for a different bracket and slightly longer return hose, I had the panel open again so I thought I'd try the image loader once more. Mods feel free to remove this post if the picture ends up site cloggingly huge.




Aww ****! They seem huge again, WTF is up with my phone
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Old 02-14-2018, 09:51 PM
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Huh, I guess they came out OK
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Old 02-18-2018, 07:21 PM
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Still not perfect, but getting there. I can reach 28psi now without a misfire, my fuel pressure was causing the misfire not my coils.


Tires, real bad now!
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Old 02-19-2018, 12:56 PM
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You should do a virtual dyno run. Because science
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Old 02-20-2018, 12:20 AM
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There's a 1/4 mile Wednesday coming up soon, how about some time slips?


The thing's crazy now, I am out of fuel again. Hey Nigel, when can I upgrade?
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Old 02-20-2018, 12:30 AM
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Originally Posted by sonofthehill
The thing's crazy now, I am out of fuel again. Hey Nigel, when can I upgrade?
29psi... that's impressive.
Injectors are ready when you are! You'll enjoy the 50% more fuel.
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Old 02-20-2018, 12:35 PM
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neeeeeeeeeeds e85
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Old 02-20-2018, 07:37 PM
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Well, that's the plan. I emailed Nigel.

When I do finally fill up with e85, do I need to add timing to idle or can I just multiply my req fuel 1.33 and up my cranking pulse. I just don't want to get stuck at the e85 station in SF. I think I have K24MADNESS''s e85 project we had running, maybe I will have a look at that.
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Old 02-20-2018, 07:39 PM
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Maybe it would be smarter to get a 5 gallon jug of the stuff and do it at home.
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Old 02-20-2018, 07:40 PM
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You can, don't have to, but it helps. Esp in the startup sweep cells. You will have to adjust your cold start in addition to req fuel. That's basically it.
Target 12 flat in boost or high 11's if you want to shoot for the moon. Looking at your current spark table, you can start with at least 5* more basically everywhere.
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Old 02-20-2018, 07:57 PM
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Thanks man!
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Old 02-21-2018, 09:54 AM
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I'd like to be the first to congratulate you on achieving 1000 semi-coherent half drunken posts in this build thread while pumping an absurd amount of boost through a $200 turbo.

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Old 02-21-2018, 12:23 PM
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Originally Posted by nigelt
I'd like to be the first to congratulate you on achieving 1000 semi-coherent half drunken posts in this build thread while pumping an absurd amount of boost through a $200 turbo.

I mean I sure as hell never expected someone to put 25+psi through one of my turbo setups.
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