Just bought a Kenne Bell kit. It's missing the FMU and some throttle linkage and a ECU program.

Can I use stock injectors with the Boost a pump unit included?

Any tips or advice?

Was not sure where to post this since it going in an excursion. This forum the V10 forum or the forced induction forum. Please let me know if its in wrong spot.

 

I would say since it is missing those parts, I would scrap it and send it to me. I'll "recycle" it for you

 

Yah, as soon as steel and aluminum scrap prices hit
$5000 per pound it will be yours.

 

The guys in the V10 forum should be able to help you get squared away so I'll move it there for you.

Stewart

 

Well, I think I should not use the boost a pump. I live and work at 6500 to
8000 ft elevation so my injectors are technically 20% larger than they need to be(given my thin air).

I think all I need for fueling is a boost referenced regulator and a tune.

Thoughts?

 

Do you have someone local who can tune the engine? Maybe give 5star a call and see what they recommend. They seem to impress most with there custom V10 tunes and such.

AFAIK about injectors. If your running at 80% they are maxed out. Not sure what rate our trucks are though. There is a guy from Kodiak, Alaska with a supercharged V10 Excursion who may be a better help. However I haven't seen him on or remember his Screen name. I do believe his name is Gary though.

 

you'll be maxing out the 19s, 24 may be enough. I just used 39 because they were oe in the ford boosted cars and be picked up cheap used. No need for boost sensitive regulation, that's pretty much what a fmu does. With enough pump and injectors you'll be fine. Mike declined remote tune on mine, my local guy was on vacation. Don did it no problems and was really prompt.

 

Great info!

Keep in mind my 19's are like 23's up here.

In my turbo eagle talon my OEM 450 cc injectors are only at 68% duty cycle at 6500 rpm and 20 psi boost. Granted anything above 7000 rpm on it would max them out. At sea level the 450's would have been maxed out at 5000 rpm and about 15 psi.

Just an example of how much less fuel is needed at my elevation. 3psi of boost just gets me to sea level pressures. So basically with a 6psi system, my equivilant boost is 3 psi.

New bigger injectors can be bought, but are they really needed in my case?

 

well if they turn out to be not enough then you have to buy them and retune, so you might end up tuning twice and buying them anyway. I have spare 39lbs units I'm going to rebuild and ebay, it's hard to find sets of 10!

 

Yah, I know you are right. In addition to melted pistons if I go too lean. It's just so much more difficult finding a good tuner who can modify dead times in addition to air flow and timing. With stockers the injectors are a known for the ECU.

Can anyone suggest a good remote tunner? Getting this vehicle tuned at a low elevation will do little good.

 

Don Lasota racing

 

I will call them thanks.

Anyone know if the stock fuel pressure regulator is boost referenced. I know there is a vacuum line going to it but have no clue if I boost to 6psi if it will increase fuel pressure 1:1?

If not, can someone point me in the right direction for a fuel pressure regulator port adapter so i can install an adjustable boost referenced regulator? I cannot seem to find one.

I do have a Kenne Bell boost a pump unit, but I have worked around turbos and know how most older OEM Turbo systems work. They use boost referenced fuel regulators.

1) proper sized injectors for amount of boost applied
2) proper sized fuel pump for amount of fuel needed for boost applied
3) fuel regulated properly for amount of boost applied. E.G. 1:1 increase of fuel pressure to boost.

The boost a pump might be able to increase fuel pressure via voltage increases but I would prefer a boost referenced regulator too.

 

I have been reading and have gotten confused!
Does a 2000 V10 have a returnless fuel system?
Does a 2000 V10 have a fuel pressure sensor?
Does the ECU control the fuel pump via pulses to maintain fuel pressure at rail?

Never mind went out and looked....its a return style. Now I just have to figure out how to get an aftermarket FPR on it that adjusts for boost.

Well its not made. All I can do is tap the schrader valve with an adapter and run the FPR from there. I will have to block off the factory return on the factory FPR. Then run a line from the new Boost referenced FPR to the return line that I disconnect from the factory FPR. Then run the vacuum boost line from old FPR to the new one.

how do this sound as a fix?

 

you don't need any regulator, with enough injector you'll be fine. I didn't touch mine, I get 11.6:1 under boost.

 

That is very interesting.

How is that possible? Existing stock FPR regulates to stock fuel pressures, and at 8 psi of boost, the injectors fuel pressure at nozzles is 8 psi less.

So, the larger injectors rated at as 43 psi are operating at 35psi due to boost, but since they are larger they flow more at 35psi than stock injectors will at 43 psi? Is that what you are trying to say?

You do you have a FMU and that boosts line pressure with boost right? I just want 1:1 not 10:1 or 8:1 as I am not sure why they boost line pressure so much. I think its to run too small injectors. In other words make superchargers cheaper by not having to swap OEM injectors. Either way you are right I either need a FMU or Boost regulator.

Do you have a Boost a pump?

I just need to rap my head around this one.