How will 120 horse injectors compare to my box?

[NPloysa]

Guys,



I have an FMS box and was wondering how 120 horse injectors, or the closest upgrade, would work in comparison. What I am asking is, since I can't just turn the injectors off, they will be on all the time, and I will be able to turn on the box for more ponies.



Will the injectors have a similar effect the box does? Will turbo spool up be slower or faster? Will EGTs (this will be with an exhaust upgrade also) be affected like the box does?



I know a box is a box, injectors are injectors, so what is the major differences as far as how the fuel is injected and atomized between the two, boost, turbo spooling, etc, etc, etc?



Thanks!

 

[GMaines]

I have Don's EDM 2. 2 injectors. They put out 105 hp. plus a box. I feel the injectors give you better all around power, I can really feel it in the bottom end... . I also got a PDR HX40 turbo that make a world of difference. I mostly drive with just the injectors. if I want more power, I just turn on the box... I the injectors...

 

[NPloysa]

Now that you mention it, what do the different types of EDMs stand for and are rated for? 1. 3, 2. 2, 4. 6, etc? Thanks!



Nick

 

[RabidRam]

I've got an FMS and Super Mentals (rated at 125HP). You know how with the box, it takes a second or two once you step on it, then it goes like all heck? Well, the injectors respond quicker. They kinda feel like having the box on... before you got injectors. The combination will make you tear a circle outta your seat if ya know what I mean.



I was worried about not being able to turn the injectors "off" during the winter months. It really hasn't been an issue. It's very streetable. The one thing that took some getting used to was what I've heard called a "lope". Your truck will shake like an old 60's muscle car with a hopped-up cam in it. I kinda like it.



I can't answer your technical questions (atomization, spool up, etc... ). I haven't had an issue with EGT's at all... of course, that's running empty and with 5-inch stacks, too. Your situation may be drastically different, I don't know. But what I do know is that the FMS + injectors = :--)



My . 02,



Dave

 

[NPloysa]

Rabid,



Disregard that PMI just sent you. I saw your sig on the "Place Ford Here" post and PMed you. You just answered all the questions I asked you!



Thanks to you and others!

 

[Mad Bomber]

Size??

Originally posted by NPloysa

Now that you mention it, what do the different types of EDMs stand for and are rated for? 1. 3, 2. 2, 4. 6, etc? Thanks!



Nick

The 2. ? are just like the regular 2's but they have just a bit more power for each . 1 it's 2. 5 more HP. The really nice part is that you can get more HP for the same price as just the 2's.

 

[RabidRam]

Originally posted by NPloysa

Rabid,



Disregard that PMI just sent you. I saw your sig on the "Place Ford Here" post and PMed you. You just answered all the questions I asked you!



Thanks to you and others!

too late... I just waxed eloquent in my PM to you.

 

[Sticks]

NPloysa - I got one word for ya... A L T I T U D E.



We high elevation people have air issues to deal with. You are going to need a larger turbo of some sort with anything above stage II's if you haul anything. Make sure you throw that into your equation.



I wish someone would make an affordable mini twin setup that uses our OEM turbo as the small one for us mid range BOMBing power level/high altitude drivers.

 

[MD500E]

Overall I prefer injectors over a box. The boxes tend to come on hard while the injectors give a more even power increase from idle to red-line.

 

[Mad Bomber]

Power

Originally posted by MD500E

Overall I prefer injectors over a box. The boxes tend to come on hard while the injectors give a more even power increase from idle to red-line.

That's very true but it's also fun some times to punch the box and hold on.

 

[jrandol]

Yo Nick!



You'll have more fluent power with the injectors, the box like any box, as you have already found out is kinda jumpy. 120hp injectors will definetely have you wanting more turbo and more exhaust. But I say, "Go Big or Go Home!!"

 

[Sticks]

Jeffry... You are a bad influence, and the poster child for your statement.

 

[jrandol]

Originally posted by sticks

Jeffry... You are a bad influence, and the poster child for your statement.

 

[Hohn]

Box Vs Injectors

Injectors ARE smoother and tend to have lower EGT at a given HP increase level. But they cause a spike in cylinder pressure that's not so good for towing. If you tow heavy, go with smaller injectors (60-80hp).



A box give you a big hit of power, and also lets you turn off the power increase. A box is also more driveable, because the only way you can turn off injectors is with the pedal. Boxes are much harder on the driveline with the big hit of power they deliver.





The more you tow, the more you should favor a box for your power. If you don't tow, I would say sky's almost the limit on injectors (within reason). You can get 80% of your power from injectors.



If you tow, I would only go with 30% of the power from injectors or so.



The balance between box/injectors should be struck based on vehicle usage, altitude, towing use, weight, etc etc... .



I would suggest most people go with a wire tap box FIRST. ONce you have that, you can consider injectors like an amplifier for the box. Same overall effects, just bigger... .



Justin

 

[PRout]

Also, big injectors will make the throttle a little more sensitive at low settings. Some people complain because their cruise control surges too much w/ big injectors.



I would think the injectors would be a little easier on the VP44 than the wire-tap box, because its duty cycle stays lower.



Either way, if your not going for 500+ HP, and you dont mind tapping your pump wire, go with stage 2 or less on the injectors, for smoothness, and then turn on the box for the extra power.



You'll have a good towing setup as mentioned above.



Some people prefer not to tap the wire, and end up w/ bigger injectors. Its all personal preference.

 

[Chipstien]

Originally posted by Shortshift

Also, big injectors will make the throttle a little more sensitive at low settings. Some people complain because their cruise control surges too much w/ big injectors.

I totally disagree with this. At least in my case I started with a EZ. Then I upgraded to a Drag Comp and DD3 injectors. Ended up never using the Comp untill I got a larger turbo because with the box on it would surge to beat hell. Liked the power much more with the injectors then I did with the EZ. Power was just much more fluid from top to bottom. Now when you get a large tubo then it is just the opposite because the timing helps the turbo spool up faster. JMHO.

 

[CORed]

Question... if you just get bigger injectors... no box, you will get increased power, but your EGT's will be higher since the boost will still stop at the stock 20 +/- lbs, right?????



Also, another related question. If a guy gets the injectors and a boost fooler w/ elbow, would it make HP and Torque numbers higher than with the injectors alone?

 

[RT66DOC]

If you guys had 12-valves and a P7100 you:



1. Could have more power



2. Could make more smoke



3. Could blow doors off 24-valvers



4. Wouldn't be having this discussion.



"Simplicity is difficult to achieve. " :-laf

 

[2broke2smoke]

if you guys had insufficiently valved motors you would have to choose whether you want to tow or race ... you would not have the ability to simply turn off the drag comp



you know what they say



simple trucks for simple drivers

 

[Mad Bomber]

24V

Originally posted by 2broke2smoke

you know what they say



simple trucks for simple drivers

OUTCH that's going to leave a mark