Hi mike me again...i was wondering what i'm looking at for a higher output fuel pump and a matched set of injectors ..$$$$ ..i think i pushing my stock set up too far now with my mods...what i have....97 4.6L 65,000 miles non p/i heads but you probably knew that.....
Johnny L air intake filter and box...
WMS tube...
BBK 75mm t/b...
ported polished upper intake elbow....
MSD coil packs...
bigger wires-- forgot name right now...
Denso plugs(from you)stock temp......
electric fans...
cooler t-stat....
water wetter....
STEEDA pulleys ....
COBRA R water pump...
MOBIL 1 oil .....
high flow cats...
Dr.Gas X pipe
SPINTECH cat back dual side exit....
SUPERCHIP (from you of course) regular program...

thats all i can think of right now for the engine....i thinkin' it's fuel system time ..probably get it over this winter...but i need to know what to set aside...and if i need a new program...there's someone here in town that has a dyno and does custom Superchip programing but i hear his dyno is cursed...lots of blow up's...i think they like it a little too lean....scares me away !!!! anyway give me a little hint ..please...thanks again !!!

 

nuthin' huh ?

 

uhh did i say something wrong ? you're giving me a complex now...

 

Hi Roushfan-1,

Good to see you again!

We're trying to get caught up from being gone to the SEMA show for all of last week, and it usually takes us about 2 weeks to get caught back up each year once we do get back from SEMA.

Yes, you definitely are ready for fuel system upgrades at your power level, we can handle all of that and the updated tuning you'll need as well, no problem.

The policies of F-150 Online prohibit the discussion of pricing here on the boards, thus we'll need to communicate about that privately, & thanks in advance for your understanding on that.

Please give us a call at our number listed below when you get a chance, so we can go over everything in proper detail with you.

Congrats on all your mods, you've got that 4.6 making some nice power. You are running out of fuel when under heavy load at higher rpms in the higher gears by now of course, so it is time for more fuel pump & fuel injector capacity and to update the tuning of course, & all of that is easily done.

Talk to you soon!

 

thanks i have to find/buy some traction bars first then i'll get back to ya..

 

I can tell you right now, you'll probably be very pleased when you hear the price of the fuel pump... I know I was.

-Flea

 

You're very welcome, Roushfan-1!

 

Yeah VISA is thanking ME right now too...!!! jeezz..i think Mike has subliminal messages going through the phone when you talk to him ..hehh hehh

 

Hi Bryan,

Yes indeed , I'd say that both VISA and us owe you a big thanks!

So you think there might be something to all that subliminal stuff after all, eh? I just had a flashback to one of the old Saturday Night Live Mr. Subliminal sketches, so I probably should thanks for the laughs, too!

All kidding aside, good luck with the traction bars, they'll take care of your wheel hop problem.

By the way, that is a very pretty truck in that color, especially with those wheels. If you like, we can snag a copy of that & put your truck in rotation with the hother trucks we display in rotation at our web site, it sure would be a nice addition!

 

I wouldn't worry about injectors.

It never hurts to have a good fuel pump, but I have run 7.50's in the 1/8th mile with bad traction on 19lb injectors and a 190lph intank pump.

That was with an old coupe that I was pushing well over 400hp.

I don't know how a f-150's fuel system compares to a mustangs as far as rails and lines though, but why spend money where you don't need it?

Save for the PI heads.

 

MIKE ...take any pic you want from my gallery ..!!!!!
as for saving for p.i. heads ..i've been kicking around that idea as well as maybe a N2O shot...but i don't think i'm going to crack into the engine 'till it's re-build time or i blow it up.....since i have 65,000..already..i think i want to BUILD an engine then ...supercharged and the whole nine...no i don't want to drop in a L sytem cuz i would have to change my engine,tranny,rear end,harness, computer....why bother !

 

Hi docdave22,

Thanks for your post!

You'd have to boost rail pressure significantly over stock to be able to support 400 horsepower with 19# units on an 8 cylinder naturally aspirated engine, whether it's an F-150 or a Mustang.

Now there are indeed any number (quite a few over the years, actually) of people who have installed a bigger fuel pump just as you mentioned, and then also installed an adjustable FPR (fuel pressure regulator) so they can crank up the rail pressure being fed to the stock 19# injectors. Perhaps that is the route you went with your vehicle to be able to make 400 hp using 19# units, a lot of people have gone that route over the years.

However, the EEC-IV & EEC-V PCM's adaptive strategy will reduce the injector pulse width right back down over time when you crank up rail pressure with an adjustable FPR, and this will affect both closed loop as well as open loop operation over time. You can "fudge" on this by clearing the PCM often, so as to effectively "reset" (so to speak) adaptive strategy, but you have to keep clearing the PCM to avoid driveability issues due to the resultant lean condition from adaptive strategy reducing the injector pulse width at higher rail pressures in street-driven vehicles.

FMU's (typically used to increase rail pressure in supercharged applications) can work "ok" in supercharged applications when they are tied into boost levels (and that is how the vast majority of supercharger kit manufacturers handle that), so that the PCM only sees elevated rail pressures for very short bursts, rather than always seeing excessive rail pressure as you will with an adjustable FPR cranked up.

In a naturally aspirated engine, assuming a BSFC of .45, the 19# units will support a maximum of roughly 337 hp in an 8 cylinder engine at stock rail pressures (nominal 39 PSI @ idle). If that same engine were supercharged to get 400 hp output, it would need 27.5# injectors (in practical terms in these Fords 30#'s), as supercharged engines will consume about 20% more fuel for the same power level @ WOT as compared to a naturally aspirated engine, in round numbers.

To be able to make 400 hp in a naturally-aspirated 8 cylinder engine at stock rail pressures, again, assuming a BSFC of .45, you'd need to use 24# injectors, which can support a maximum of 426-427 HP in that configuration.

We recommend not using adjustable FPR's in general, unless upgrading the fuel pump(s) has caused idle quality problems due to too much fuel pressure, as can happen sometiems with 255 l/hr. pumps for example. In that situation it is a good idea to install the FPR to keep the rail pressure down to 39 PSI @ idle so everything stays in synch, so to speak.

Just FYI............

 

Hi ROUSHFAN-1,

OK, thanks, we'll snag a copy & get you into our rotation soon, that's a very pretty truck so we'll be happy to show it!

 

no prob.!

 

That setup was a stock 302 shortblock with edelbrock aluminum heads, steeda cam, explorer intake, stock rails, stock maf, stock fpr, stock a9l processor, 3.73's, longtubes with full exhaust, and a 150 shot.

Yes, it was on on the verge of starving N/A, but the nitrous was a wet kit and that is where the big pump came in handy by keeping the pressure from dropping when the extra fuel was supplied.

But lets be honest, ROUSHFAN-1 I am not degrading your truck or anything, but I think you still need quite a bit more to get to that level. It wouldn't hurt, but I am just saying that I would spend more money on something to get me to that level before I dropped money on injectors.

Get the pump. Wait on the injectors.

Just my .02