Big head actuator

[trrun]

Can anyone tell me what the benafits are of a big head actuator. I mean do you get a horse power or torque gain? I have an AFE stage 2 and soon to have a banks turbo back 4" exhaust, 02' 7.3. Should this come before a chip or visa versa? Thanks Tim

[RJacks258]

It does allow the wastegate to stay shut a bit longer, thus building more boost. And airflow on a diesel is always more important than fuel. If you have the patience to do this before a chip/programmer, then I would say yes. Me, I couldn't wait. I wish I would've known, I just sold a Banks Big Hoss module for the 7.3 94-03 for $200.00, thats a steal. But if you do the wastegate, I'd do the compressor wheel too. Harder install, but remember, airflow first.

[drmiller100]

Originally Posted by RJacks258

And airflow on a diesel is always more important than fuel. I

i'll disagree with this. on a PSD, it is MUCH harder to get atomized fuel then air. smoke does not mean too much atomized fuel.

smoke means to much UN-atomized fuel.

[RJacks258]

Hey dr, I think you misunderstood. I wasn't saying anything about it being hard, just more important to add air first, then fuel. Because I know you already know excessive fuel leads to higher EGT's. So like I said, air first, then fuel.

[RJacks258]

Also, I didn't say anything about smoke.

[drmiller100]

Originally Posted by RJacks258

Hey dr, I think you misunderstood. I wasn't saying anything about it being hard, just more important to add air first, then fuel. Because I know you already know excessive fuel leads to higher EGT's. So like I said, air first, then fuel.

Hmmmm. If you add more air to a stock PSD, you do NOT get more power.

If you add more fuel to a stock PSD, you can get a LOT more power.

If you do it RIGHT, for a little while, you can get more power without hardly any more EGT's. In fact, a good tuner can get MORE power with LESS egt's just by playing with the tunes. Want to know something REALL weird? With the added fuel, you can actually get BETTER mileage?

for sure there is a limit of about 50 horse where you start to get heat as you add yet more power.

so, i'll disagree. adding more air first doesn't make sense to me. Adding more fuel first makes more sense to me.

[RJacks258]

You still don't get me. I never said adding air makes more power. It should be noted that as a rule of thumb on a diesel, adding air to keep the added fuel from killing the engine is important. Therefore adding air first is the way it SHOULD be, not the way everyone does it though. I'll also told this guy that started this thread, f he can, to do it that way. Then said that me myself couldn't, basically meaning that I wanted the power first. I know that just adding air isn't going to do anything. You get me now?

[drmiller100]

Originally Posted by RJacks258

It should be noted that as a rule of thumb on a diesel, adding air to keep the added fuel from killing the engine is important. ?

i missed that rule. looked on both thumbs, my toes, and even watched the video.

please advise.

i'd TOTALLY agree that less heat is a good idea. but that isn't what you said.

[RJacks258]

I went back and looked at my posts, and I did not say anything about air equaling power. And of course the rule wouldn't be on you, because the airflow boat left your stop hours ago. Its at Bankspower.com if you want to see it.

[super_stroke]

easy guys. i dont want to step on anyones toes but i agree the waste gate should be first. the whole point of an after market intake is to let more air in easier. i know intakes werent mentioned. but i think its kinda the same. if the waste gate stays shut longer the engine can build more boost. more boost is more power(i always thought). i dont mean hundreds of horse power, but a couple.smoke is TOO much UNBURNED fuel and not ENOUGH air.i know this first hand cuz my truck lost ALOT of smoke after i put a free flowing intake on. i think i kinda got off topic but just my . take it or leave it.