I might need a fuel pump. Which to get?

Please take the time to read about our custom senders.
Our block and sender combo will outflow Red's contraption.
Our lines are bigger, no taper and better radius.
Our block is huge compared to the outlet of the pumps.
We adjust the bypass valves on our GSS294M pumps used in our DP systems for very-high pressure operation (same deal as Red). All our DP units are performance tested up to 80PSI.
Our wiring harness / solution is top-notch .... oh wait ... Red's DP does not come with a wiring harness/system

Let me think about all this info so far.... take the idea of someone with 950 posts or someone with 5000 + and a member for way longer... or should I just look at there sig and see the real numbers

I think this was "much to do about nothing" all tho some good info was brought out it turned into a heated(pardon the pun) issue over heating the fuel(none issue)?
After reading thru all this, if anybody cares, I've run a Red's DP for the last 4 years w/ no problems.(fuel/heating)!?

As I said,there are a multitude of things that can go wrong. The safest thing to do is get rid of the car. However,talking about all the many things that can happen in life has nothing to do with this thread. This thread was started by a guy who wanted information about available fuel pumps. If all the double pumper second pumps,in the world failed to come on,it wouldn't change the fact that the installation of a DW pump might require the modification of the fuel return line.

This is an unwise thing to do and another unfortunate thing that happens in the world. Does it change the fact that the installation of a DW pump might necessitate the modification of the fuel return line?

If someone installs a double pumper,made with two Walbros,the fuel return line will never have to be modified. The second pump doesn't come on until the motor is using a good amount of volume produced by the first pump. If the second pump was allowed to turn on at an idle,you would,of course,overwhelm the return line. This never happens when the pump is turned on,only,when the motor needs it and,again,has nothing to do with the fact that installing a DW pump might require the modification of the fuel return line.

This is my point. When you're running 93 octane at 25 plus lbs of boost and the pump doesn't put out enough alcohol,you can and will have a detonation event that could be very destructive. Of course the alky pump can also fail to come one,and that would surely be disastrous with 93 octane.

We have already established that the installation of a DW pump can require the modification of the fuel return line and WILL heat the fuel more. Why are we still talking? These are the only two points that I wanted to add to the list of aspects of running aDW pump so a person looking to by one will be able to make a more informed choice. Instead of ending this conversation,you want to talk about the many possible things that can go wrong in the life of a turbo Buick owners life as though it will negate what we all agree is true about the DW pump. It doesn't,even matter if we agree. The facts don't require that anyone believe them.

No one is debating the odds of it happening. The OP wanted to know if it might be a problem for him. The answer is yes,so he will now make a choice based on the information he's received.

We've already established that it's a mathematical certainty that the fuel will get heated more with the DW pump.
The reason the fuel gets heated is the same reason that someone might have to replace or modify the fuel return line. You can't have one without the other,so we might as well stop talking about the heat. the return line issue still exists and some might have a problem with that. Again,this has already been agreed on. why are we still talking.

Repeated corrections to refusal to acknowledge the fact that the fuel gets heated more. In a perfect world I would only have to say it once.

The only point of this thread is to inform people of the different aspects of fuel pumps. You've been informed and are using the information to help yourself make a choice. You have nothing to apologize for. I hope you can see the importance of informing a potential buyer,of a product,that some modification might be required. Some might not want to buy it if this isthe case. The purpose of my posts are not to promote the Walbro,but to reveal a problem with the DW in this application. Any one who doesn't mind this can buy one. If they don't know about it,they can't make a choice.

Again,after many people have testified to the fact that they couldn't control their fuel pressure,after installing a DW pump,Nick repeatedly dismissed them by saying he'd never had that issue personally. He refused to acknowledge the problem,but eventually we saw,through his testimony,that he was aware of the problem all along. Why did he do this? Because he sells the product. He was backed into a corner and got his feathers up. It's human nature. We all do it,have done it,are doing it,and will do it in the future. It was a knee jerk reaction. I think he regrets it. He corrected it. All is forgiven. I didn't attack him. I pointed out what he did. Why weren't you disappointed in what he did?

Do you disable it's operation?

You should only look at the facts. Please quote something I said that wasn't factual.

I don't think we can dismiss the importance of gathering all the information about anything in life so we can make better choices. That's what this thread is about. The fuel will get heated more with a DW pump. I'm not saying it's a good or bad thing,but it is a certainty. If a person doesn't mind this fact,he can purchase the pump. It's,only, important that he be made aware of this thing.

I said in an earlier post that the heat issue could be taken off the table because it comes with the idle pressure issue. They're caused by the same thing. Some people might not want to purchase this pump because of the possible necessity of a return line modification. The purpose hear is to make everyone aware of this possibility. We have.We're done.

Disable no. That is not a smart move nor required. We max them out so they open at well over 100PSI.

I'd still recommend the DW. As I mentioned before,I redid the return to 5/16. Now,keep in mind I'm not sure if I needed to redo it,but I did.

The absolute must-do was to make sure my Accufab FPR had a larger opening. With that,I just went thru and ran return line all the way back,leaving the stock return line in place.

I used a new sending unit since I had the tank down. The flare on the end of the return pipe?? ...bad restriction there. I cut it off and flared it for 5/16.

There is a guy who will drill and weld the proper fitting in the outlet of the FPR in this group for decent money. Quick turnaround,too. Check that DW thread I sent you a link to from the E85 section.