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Inline Pump AFTER Fuel Filter

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As far as power goes, my new setup is going to include Bluemax 1850cc injectors, E85, cams, smim, and an HX35 on 30+ psi with the BEP vband housing on a twinscroll manifold. Thank you for mentioning flow vs pressure, vs voltage, I forgot to put that in, and many people fail to take this into consideration, and if you look at the numbers, the 255 really falls short at higher pressure levels, especially on corn juice. Diambo, I noticed you ran the time in your sig on pump gas. Have you ever tuned on e85 with your setup?

Also, Diambo, what is your base fuel pressure utilizing the factory regulator with your setup? Ive ran a 255 for years, and just use an AFPR because everyone says you suffer fpr overrun with a 255, so I never tried running with the stocker, but I am now curious about this...

My times were run on pump E85. Not on straight gasoline. My BFP is stock ie. 37-38psi. :thumb:

With your setup, even a single pump like the Bosch 044 or the new Jay Racing pump will suffice. I did run a 10.7@138mph on only a Bosch 044 too on E85 (before I added the inline) so I know it can handle the power just fine. Just lower the base fuel pressure a little.
 
Speaking of Jay Racing, check out the new intank pump they just came out with. Its looking very promising. Now, if I can just find a way to rig something up to ensure pump voltage stays static, at say, 14.7....
 
My setup is very similar to Mike's. I am using two Walbro 255 pumps. One in tank and the other inline.
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I run a Walbro 255 inline AFTER the filter (Fuelab filter) and a 255HP in-tank. This is actually the better way to do it. The in-tank pump will essentially be pumping at 0 psi, the flow level of a 255 at 0 psi is overkill for just about any in-line pump you'd run. Because of this, placing the slight flow restriction the filter causes between the in-tank pump and in-line pump is the ideal place for it where it won't cause a restriction in the system. MANY people on the DSMLink forums have been running setups just like this for years without problems.
 
I know this thread is a little old but my question pertains to this. I have a Walbro 255 (not HP) intank and want to install an inline pump after the fuel filter so I dont have to splice into my stock lines.

I bought a Aeromotive tsunami inline pump that came with AN fittings on both ends of the pump. So I have two questions about this setup:

Would the intank walbro be able to keep up with the tsunami pump? I will have them rewired and will also be using the stock fuel filter and stock lines.

Would putting the inline pump on in the engine bay cause it to receive less voltage since you have to run the positive line back to the regulator for the rewire? To my understanding, you run the positive for the inline to the same positive that intake uses. Correct me if im wrong.
 
I know this thread is a little old but my question pertains to this. I have a Walbro 255 (not HP) intank and want to install an inline pump after the fuel filter so I dont have to splice into my stock lines.

I bought a Aeromotive tsunami inline pump that came with AN fittings on both ends of the pump. So I have two questions about this setup:

Would the intank walbro be able to keep up with the tsunami pump? I will have them rewired and will also be using the stock fuel filter and stock lines.

Would putting the inline pump on in the engine bay cause it to receive less voltage since you have to run the positive line back to the regulator for the rewire? To my understanding, you run the positive for the inline to the same positive that intake uses. Correct me if im wrong.

The Tsunami pump actually flows less than the 044 which most people use after the in tank 255 pump, so you should be fine. http://aeromotiveinc.com/wp-content/uploads/wpsc/product_images/11103_11106-chart.jpg

For the wiring I used a separate relay fed from the battery and triggered by the stock relay.
 
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