LPFP Porn courtesy of Black Market Parts

dyezak

Major
May 4, 2017
1,768
1,515
0
Plano TX
Ride
335is
Thought you guys would enjoy. Dual Walbro bucketless w/dual Holley Hydramats.

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dyezak

Major
May 4, 2017
1,768
1,515
0
Plano TX
Ride
335is
How bout triple Walbro bucketless with hydramats?

No need. Realistically two walbros should be enough fuel for 1000hp on E85. Any limit you see below that is most likely fuel line restrictions. Three of these things are generally used in bucketed setups where the third one is dedicated to PI with its own FPR and return line. I'm not doing PI, I'm not having delusions of grandeur where I think I'm going to out Omar @[email protected].

If you are going to be shooting for 1000+hp on E98, then yes, triple bucketless might have a place...but lets be real on how many people are *really* likely to do that.
 

[email protected]

Lieutenant
Nov 5, 2016
596
606
55
Bay Area
Twin Walbro 450’s are not even close to enough pump for 1000WHP on E85. We have triples on the car, and we can watch LPFP slowly go down as you approach 900WHP, we also ran fuel that requires 30% more fuel than E85 for a little while as well. So that prob didn’t help. But doesn’t matter what they flow numbers say on the Walbro paperwork twin walbros are not even close to enough fuel for 1000WHp on E85.
 

dyezak

Major
May 4, 2017
1,768
1,515
0
Plano TX
Ride
335is
Twin Walbro 450’s are not even close to enough pump for 1000WHP on E85. We have triples on the car, and we can watch LPFP slowly go down as you approach 900WHP, we also ran fuel that requires 30% more fuel than E85 for a little while as well. So that prob didn’t help. But doesn’t matter what they flow numbers say on the Walbro paperwork twin walbros are not even close to enough fuel for 1000WHp on E85.

Considering I'm shooting for ~750hp I think I'm fine. But it's good to hear actual experience instead of marketing claims. One thing however. If a single Walbro will hold ~550-600hp on e85...why does it take 3 to hit 1000? I suspect there's something else going on besides just the pump that's playing into that.
 

[email protected]

Lieutenant
Nov 5, 2016
596
606
55
Bay Area
Absolutely not. I would never run straight methanol in a N54. The fuel is too corrosive for all the delicate components in the DI injectors, HPFP’s etc.
 

cloud9blue

Sergeant
Oct 17, 2017
255
190
0
Ride
09 E92 335i
Considering I'm shooting for ~750hp I think I'm fine. But it's good to hear actual experience instead of marketing claims. One thing however. If a single Walbro will hold ~550-600hp on e85...why does it take 3 to hit 1000? I suspect there's something else going on besides just the pump that's playing into that.
Not super informed on the fueling issues on the lpfp side. But my guess it is because the fuel lines are restrictive and/or inefficient at retaining the proper pressure.
 

[email protected]

Lieutenant
Nov 5, 2016
596
606
55
Bay Area
Well yes, it should go without saying with looking for power, anything over 650WHp in my opiinion should get rid of the 5/16 fuel line for minimum -6. I can tell you PFS, has some very cool fuel pump options coming N54 powered vehicles. I’ve seen most of their test products, and they fill all the current voids in the market, at unbeatable prices
 

[email protected]

Lieutenant
Nov 5, 2016
596
606
55
Bay Area
Splitting to 3 -8 AN is way over kill, and a waste. -10 splitting to triple -6 is what I am running. A single -6 can easily support 700WHP on E85. You plan to run more than 2100WHP, and need -8’s? Keep in mind I made. 850WHP on close to E98 on a single -8 feed to 3 -6’s with no pressure fall off. I have recently upgraded to -10. Also I would price out a surge tank compared to those mats. Hydro mats are cool, but a surge tank is better. The radium tank is hard to beat.