01silverbullet

I agree with Loki on this one. I am sure a lot of guys were under the impression that you could just turn up the boost on the ECO. Looks like Ford maxed it out by sizing the turbos on the small side. I am sure this was a strategic decision to limit durability and reliability issues. I am not saying one engine is better than the other but it looks as if major modding is in your future the 6.2 and 5.0 would net you higher gains for less $$$$$. I believe that is what Loki meant.

Loki 5.0

I did not say their was anything wrong with the EB . The EB is a beast, but if you are going to void your warranty why not get serous about power? A 6.2 with boost and the game is over.
RE:"Why do you keep posting antagonistic replies like this? "
This is a public forum. It is my prerogative to state my opinion as much as it is yours. I guess we can all just bow down and worship the immortal EB and call it a day.

spdmpo

Loki, yes I went back and modified my reply before you quoted me because after I reread it, my reply is the one that sounded antagonistic so sorry about that.
The point I was making is that adding a MBC is not a major mod and will mostly just hold some more boost where it would slack off. Whether the a/f can handle that is what we need to know. Thinking that mod means someone is looking for major additional power or wants to modify turbos in a big way is an overstatement. The idea is that it wont void a warranty because it can't be detected when removed.

spdmpo

For the record I don't think any of the engines are better than the other. One was better for me personally for my particular wants and needs. I think very highly of the 5.0. If money was no object id have one of each or just bought the 6.2 and deleted the economy calculator on the dash, lol. But now I've gone way off topic. Back to the MBC.

dmz01

Be really careful. There is a boost out of range DTC and if they see that and any trace of tampering under the hood, they might void your warranty. Just a reminder:
https://www.f150forum.com/f70/thinki...coboost-84773/

Now if you are really careful and ensure there are no physical traces of the manual boost controller (whether scratched surfaces or whatever) then you're probably OK.

BassAckwards

Careful! I always cite that exact post on topics like this. People won't take kindly to it your just gonna get called the "Fun Police"

11screw50

actually, I think it's because small turbos spool faster giving you better low end torque...I doubt it had much to do with durability/reliability because it could have been just as reliable with bigger turbos.

zitterich246

Yes, less chance of turbo lag with smaller turbos

01silverbullet

You are correct but it does both. Smaller turbos have reduced lag but also limit max power output. So you can't just turn up the boost on this engine. I was talking about overall system reliability not just the turbos. Besides if you do turn up the boost an overboost event will be logged and if you have an issue the dealer will see that logged event if any service is required.

I think they are all great engines and are each suited for specific applications.

Deftones

I would like to see the ecoboost with bigger turbos, bigger intercooler and a custom tune. I am sure the stock motor can take serious boost. Like the 2003/2004 Cobra, it came out 390/390 and people slowly started modding it and realize dam this thing can take some serious boost. Then guys started slapping twin turbos on it and saw 800+ RWHP on stock block and internals.