bubbabud

55 years of driving and wrenching on turbo charged engines diesel, gas and piston powered aircraft. Plus I got most of the eco info by reading the ford diognostic and technical flow charts which I found right here on this forrum. in the form of other links by other posts

Riccochet

Wrong. The wastegates on the Eco are electronically controlled via a solenoid. I know, I replaced it on my old 2011. I can watch boost and throttle position on a scanner or Torque. Under WOT, or 70% according to Torque, boost will fluctuate. Those fluctuations are controlled by the wastegates releasing boosts. Pull the hoses off the lower intake tubes where the waste boost is dumped in and take it for a drive. You can clearly hear it dumping some boost under hard acceleration.

The K04 turbo's do not have blow off valves. The wastegates are internal.

Daximus

I have a few years of that under my belt as well, and a degree (that I have never used, lol), however this is the first drive by wire engine I've dealt with. I see what you are saying, and it makes sense...doesn't explain the dyno numbers though. Hmmm...

Good discussion though. Interesting stuff.

From your position if one was looking to increase performance a tune would be the first order of bussiness, yes?

ajusa.com

or just hit us up! You know you guys get the best price

FORUMS@ajusa.com

bubbabud

Thse are not the waste gates you hear it is the blowoff valves and they are controled by the ecm the waste gates alow some of the exhaust to bypass the turbine and it is dumped into the exhaust down stream from the turbos and is controled strictly by boost pressure and is used to protect the turbo from excessive pressure and is set at a higher pressure than blowoff valves and the engine max boost level

djt81185

That is not how wastegates work. You set wastegates springs at lower then maximum boost then use a boost control valve (electronic or manual...electronic in ecoboost) to control wastegate opening. You have the bypass valve set at higher then maximum boost to get rid of excessive boost spikes and prevent compressor surge caused by rapid throttle closure (you can put a electronic solenoid on this to allow the pcm to control them as the ecoboost does). So on our trucks both wastegate and bypass valve are ecm controlled. Having the Bypass valve set lower then the wastegate would almost always lead the turbos into an overspeed condition due to exhaust gas trying to push the turbo harder and harder and bypassing all the air back infront of the turbo.

As a last resort when both wastegate and bypass arent controlling boost effectively it will shut the throttle

Leadsled124

Actually i was speaking to livernoise right before their tune came out and they said all the intakes they tried showed only a 1 hp gain to the wheels at best. Now im not saying it wont spool up quicker as im not sure, but doubt it. Only way you will increase power is if your tuned for it (especially on FI vehicle), and are maxing out the amount of CFMs the stock box can pull. If anything just get the airaid. The stock tube is good but the cheese grader on the top inside of the airbox like all oem vehicles these days is to reduce sound. I personally wOULD still like to bolt up a cone filter just to see if i can hear the turbos more

If your going all out though injen and volant make some of the highest quality intakes ive used. By far my favorite craftsmanship. AEM also is now owned by K&n after AEM violated a patent and they handed over the companies keys as payment. So research is probably shared between the 2.

I went a little nuts on the last 2 vehicles and tried 4 different exhaust and 4 different intakes on each data logging and comparing at the track.

Side note, on a non FI vehicle the aftermarket intake tends to shift the powerband slightly up the dyno curve. Little less low end but more mid to top.

ajusa.com

The guys that have only an intake and exhaust that constantly run .3-.5 secs faster in the 1/4? But that cant be from a filter.

bubbabud

One more time the boost pressure in the eb engine [ the pressure in the intake manifold after the throttle] is controled by the ecm modulating the throttle opening. this modulation causes spikes in the pre throttle post compresser ducting and intercooler this excess pressure is realeased back into the pre compresser intake stream by the blowoff valves which are activated when the ecm detects excess pressure in the pre throttle intake duct caused by the throttle modulating[closeing] under high boost conditions. the waste gates divert exhaust gas around the turbine as the turbo reaches its max safe operating pressure. as a last ditch effert to protect the turbos. these statements aply to the techknoledgy used in the eco engines and not to earlyer gas turbo or diesel engines where the boost was controled by the waste gates or variable dispacement turbine houseings

bubbabud

Of course you are talking about NA or positive displacement [Roots] blowers or old tech turbo moters without drive by wire. these will benifit but without electronic interferance the eco wont benifit from a cia upgrade. All tho it does sound awsome.