Free Performance mod…

[Guest368]

Hey everyone. So… changing the oil today on the Cobra and decided to tinker with the Tremor so see how things work…. How many people had the “fan plastic part” in the intake tube? Mine had it. Took it out… it’s something I can actually feel after removing.

 

[Badmothertrucker]

Hey everyone. So… changing the oil today on the Cobra and decided to tinker with the Tremor so see how things work…. How many people had the “fan plastic part” in the intake tube? Mine had it. Took it out… it’s something I can actually feel after removing.

Which intake tube, the first piece closest to the air filter or the other connecting section further away?

Did you get a pic of what it looks like?

 

[Bannerman]

Hey everyone. So… changing the oil today on the Cobra and decided to tinker with the Tremor so see how things work…. How many people had the “fan plastic part” in the intake tube? Mine had it. Took it out… it’s something I can actually feel after removing.

What purpose does it serve? Ford must have put it there for a reason

 

[Robb1]

Consensus on the interweb is that it’s primary purpose is to reduce noise, but also to reduce turbulence at the compressors. Which drives noise, but also effects turbo efficiency. In my reading no one has been able to measure a difference ether way (installed or removed).

 

[Bannerman]

Consensus on the interweb is that it’s primary purpose is to reduce noise, but also to reduce turbulence at the compressors. Which drives noise, but also effects turbo efficiency. In my reading no one has been able to measure a difference ether way (installed or removed).

Hol’ up, you’re suggesting Ford engineers might know more about the engines they design and build than @Idaho.Tremor ?

 

[Robb1]

Hol’ up, you’re suggesting Ford engineers might know more about the engines they design and build than @Idaho.Tremor ?

loaded question. I do not have access to any data that would let me say in one way or the other, only what I’ve read. What I will state is Ford put them there for a reason (what reason or reasons are up for debate). The aftermarket CAI manufactures are mostly silent on them despite the fact they are exposed during install of their kits (and visible in install instruction). If there was easy performance to be had by removing them, with no downside other than noise, I would expect them to take advantage of that.

Roush specifically says not to remove them with their CAI.

Thats my logic at this point. I’m certainly not discouraging anyone from modifying their truck as they see fit.

 

[hotrodmex]

Was the Butt-Dyno calibrated to ISO-42069 or ISO-80085?

 

[Brandcra4d]

One of the custom tuning companies dyno’d with and without them on a gen 2 3.5 a few years ago and they lost a few HP with them in. I can’t find a link to the article but the conclusion was they had something to do with decreasing a vortex at the leading edge of the compressor wheel and increased efficiency at high rpm.

 

[hotrodmex]

I'd bet a Tootsie Roll that if removing it "gained a few HP", it lost a few HP somewhere else in the curve.

If it's there to help limit pressure waves on the compressor wheels, I'll leave that shit in for turbo life.

 

[Brandcra4d]

I'd bet a Tootsie Roll that if removing it "gained a few HP", it lost a few HP somewhere else in the curve.

If it's there to help limit pressure waves on the compressor wheels, I'll leave that shit in for turbo life.

I either fat fingered that or just brain farted. They lost HP with them OUT. It was across the HP and the torque curve. It wasn’t much, maybe 3-5 HP and 8-12 ft lbs of torque at like 5500 rpm.