Options for fuel upgrades

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nopropslaw

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What option are available for a GenII fuel upgrade? I have read that 05 gt injectors would fit and are 24lb, an upgrade over the stock 19lb. Is this accurate?

What I have not been able to find is a fuel pump upgrade. Is their a higher flowing pump upgrade that is just plug and play? Do stock pumps from other certain vehicles work?

Thanks in advance.
 
are you having injector / fuel pump issues ?

have you put the car on a dyno to see what your duty cycle is ?

why are you trying to upgrade your fuel system ?
 
+1 on the questions. Neither a different fuel pump or larger capacity injectors will do anything for you unless you have done other modifications and NEED the upgrade.

KS
 
I am not having any issues with my fuel system. I am going to be getting a 91 tune from Torrie soon and since a new e85 station just opened up near me, I was going to have him write me an e85 tune as well. I've tried finding threads here to see if anyone has done it, and while there was talk of it, I didn't find anyone had posted results.

I would only consider it if the cost is reasonable. So far I have found the 24lb 05 injectors for $60. If I can find a fuel pump for around $100 or less, I may give it a shot.

I know that the stock fuel system isn't made for e85, but I know many other people with cars not made for it use it with success and no/minimal downside or issues.

I figure might as well see how it works.

And the only modifications i will have are CAI and maybe some free flowing mufflers, but that's it.
 
Unless you are adding a supercharger/turbo charger/nitrous (and probably even if you are) you don't need more fuel flow. You do know that the LS is a returnless system where the fuel pump is controlled to regulate pressure, and there there are actually two fuel pumps, right?
 
you better upgrade those fuel lines before even worrying about a fuel mover, if your running
e85.
 
I did read that it had a 2 pump system. So you are saying the stock system should be able to handle the added fuel demand from an e85 tune?

I ask this because I emailed Torrie asking him and he did say the system would need to be upgraded, and I did mention my very limited mods.
 
elephantrider said:
you better upgrade those fuel lines before even worrying about a fuel mover, if your running
e85.
Click to expand...

Are the fuel lines in the LS any different than those on the 99-04 mustang/cobra cars? I ask because those guys run e85 using stock lines and only upgrading injectors/pumps and sometimes fuel filters (jury is still out if e85 affects paper filters, some have said yes, others no).
 
The LS is way more Jaguar than it is Ford. The odds are good that the lines are very different...
Personally, I think that e85 is a bad idea.
 
i'd want to confirm for sure, as i'm not sure on the difference. you want to be more safe
than sorry in that situation.

either way, using corn on a ls is risky, in my opinion. i don't think you'll get much bump
in power, with the factory manifolds, cats, rear pumkin, etc... your opening a bigger
can of worms as far as what you need to upgrade to the the most bang for your buck by
going e85.
 
I'll try doing a little research on the fuel lines, and other components that may be affected by e85 on the LS.

http://www.mustangandfords.com/how-to/engine/m5lp-0912-2004-mustang-mach-1-e85-mileage-test/

I found the above article interesting. The mach 1 gained some good power from just e85 and tuning. It was a stock car. Although larger displacement than the LS, it also has high compression.

I'm hoping I would be able to get away with the stock setup on the LS.

Back to the original question though, any fuel pump upgrade options if its determined that I will need it?
 
yeah, do it right the 1st time. full squash dual fuel system.

otherwise, i'm sure you could retrofit an pump upgrade with
some work.
 
well people have upgraded the fuel systems for turbo and giggle gas systems, so if you really want to, sure...


also you never said what year your LS is? the 1st gen air assisted fuel rails are gonna effect things.


honestly, I just cant see switching to corn for a non boosted car, the little gains just are not going to be worth the trouble... and what you need about 30% more flow? seems like a lot of waste. waste in time, waste in parts...


do you really think its worth the little amount of spark advance you can add for a few more octane points over 91-93 will be worth it? its not even gonna be enough to feel, if anything you may be able to see a few more horses that may look cool on that dyno sheet, but thats really the only difference youll see.
 
nopropslaw said:
I'll try doing a little research on the fuel lines, and other components that may be affected by e85 on the LS.
Click to expand...

for starters, you will want to make sure that there is no bare magnesium, aluminum, and rubber parts in the fuel system...
 
Any alcohol-based fuel only makes more power because you configure your system in such a way as to be able to add a lot more of it. Stoichimetric point for gasoline/power is in the 12 to one range. Methanol is just fine down to about four to one. Ethanol is somewhere in the middle.

Unless you reconfigure your fuel system in such a way as to be able to make simple adjustments, and have instrumentation to tell you where you are, you are very likely to make your car un-drivable in short order.

You simply can't go about things as you are trying to.

I have a well-scienced-out system to enable the use of methanol and nitrous oxide as a power-adding system. And I have, just as an example, about seventy-five feet of various diameters of stainless-braided hose with Teflon liners so as to obviate the possibility of hose failure.

See "Land Speed LS" in the HP section.

KS
 
^ yup ! corn needs roughly 30% more flow to get to stoic... i'd throw a 75 shot on there, with
a REALLY good dyno / street tune before i tried to do the e85 thing, honestly.
 
As another aside, the second fuel pump mentioned above isn't a mechanical pump at all. It is a passive siphoning system used only to transfer gas from one tank to the other, keeping volume balanced between tanks.

KS
 
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