BAPs are over $200, I can get a stock cobra hat w/o pumps for $100, and buy a focus pump since I already have one.

 

You NEED bigger lines and rails.

 

Well I've read differently, but I am not trying to argue. All I wanted to know was if dual focus pumps will support 525ish rwhp, which I am pretty sure they will.

 

yeah, but in boost those big *** injectors will suck the stock lines and rails dry. It's not a pressure thing, it's a "those lines cannot hold an adequate supply of fuel under boost" thing.

I'm not trying to argue, I just don't want you to see that engine go "boom" from fuel starvation when you go into boost and the injectors suck the rails dry.

 

For some reason I was also under the impression the stock rails could handle way more than 500 rwhp. I thought I read that somewhere but I guess it's not true?

 

Nope... I think they are only rated to 500...
Its not that big of a deal really, unless you are strapped for cash. Lethal has a fuel line/rail upgrade kit for like $480. This is -8AN line i believe, Aero inline filter, and Fore rails. Not bad. I will most likely end up running this setup as i need new lines ect...

Edit: Here is the link
http://www.lethalperformance.com/99-...-rails-p-29330

 

Also, remember jvog, if you decide to run a BAP with the 2 focus pumps, you need to upgrade your FPDM

 

I don't really know anything about the FPDMs. Care to school me on them? Hopefully I won't need to run a BAP with the two focus pumps.

 

Oh yeah that is another thing +1 on the FPDM. I think you can also run dual FPDM's instead of one modified?

Tim99GT and 2000AZ5.0GT thanks for the info. I guess that just adds to the fact that over 500 hp is going to cost a lot of money.

 

yes, you can run dual FPDM's. Lethal sells a dual kit with the harness and everything you need.

Here is a little info on upgrading(from Lethal's site):

WHEN DO YOU NEED IT?
If you'are running a pair of big returnless fuel pumps (i.e. Lincoln Aviator, Ford Focus, or Ford GT) and/or running '03/'04 SVT Cobra dual pumps with a pump voltage booster in your high-horsepower Mustang you NEED to have your FPDM modified. This modification allows the Ford Mustang driver (99-04) to sink substantially more current (up to 25Amps) without overheating. What happens when the stock driver overheats? It goes into thermal limiting and cuts ALL fuel supply to your engine until the driver temperature drops below a safe level. As I'm sure you're aware, the loss of fuel pressure with your engine at full load can often times be catastrophic!

This modification will NOT require a retune of your vehicle. It will not reduce reliability of the driver or of the system. In fact, the driver will run much cooler than in the stock configuration which will prolong its life even when used with high-flow, high-current dual pumps.

WHEN DON'T YOU NEED IT?
This modification is NOT necessary if you are running stock '03/'04 Cobra dual pumps without a pump voltage booster or a single Aviator, Focus, or Ford GT pump without a pump voltage booster. It will not hurt to do this modification with the above mentioned systems but it is not necessary as those pump setups all draw less than 18Amps at full load.


Rundown: Basically, If you are running 2 large pumps with a BAP, you need to modify the FPDM. If not, the pumps along with the BAP or BAP's, will draw too many AMPS for the stock driver to support them. This results in overheating and causing the driver to basically shut down to cool itself off. When it shuts down, so do your pumps. Resulting in you engine not receiving the adequite fuel. This = "boom"