swedepat

It actually do not add any power, but it makes sure that power you got stays there.

I have logged huge heatsoak problems at hot days.
I started to log this when i felt my c55 is running really really hard at nights and really lame at hot days.

What to do?

I added a simple 1.5" hose from the airduct in frontspoiler next to right foglight.
This hose is just stuffed behind the airpump and down underneeth the intakemanifold.
Not connected to anything, just flushes away warm air trapped under the intakemanifold when car is rolling.

Gained performance?
Yes!
But ofcourse no if standing still for a long time.

But i have logged nearly 10degree celsious drop in intaketemp.

If cruising at say 55mph and doing a sudden stop, when intake still cold. i gained almost 0.2s in the 0-60mph
Before 4.27s
After 4.09s

Cost?
About 5 dollars

Raced a C63 the other day, after the race he asked me what the **** i had done to the car.
It´s almost as fast as when i had the compressor on.

So.. rob your girlfriends vacumcleaner for some speedparts

amgen

Very interesting!

Pictures please?

Fantomas

I hate to be a cynic but there are no gains to be had by cooling your intake manifold with a duct. Did you also happen to log the outside air temperature before and after along with intake air temperature? All cars become quicker when it gets cold outside, in addition to denser air the cooler temperatures mean the car isn't pulling timing. 0-60 time is mostly an indicator of traction.

amgen

Swedepat knows what he is talking about, read his post again.

Accidental L8 apex

Swedepat does not know what he's talking about. .18 of a second means nothing other than traction was slightly different run to run. Roll-ons are about the only real world test that takes human error out of the equation. Everything else is for for forum points and atta-boys.

Kind of like trying to hog-out the entire inside of our intake manifold and thinking more horsepower will result. Sound familiar?

insame1

Are you saying that lowering you intake air temp will not produce more power? Your post seems contradictory to me. If it doesn't why do people add intercoolers to superchargers?

Fantomas

I see that he's enthusiastic and puts his money where his mouth is but this isn't a proper test. Didn't see him mention ambient air temperature.

I love free power as much as anyone, unfortunately the closest thing we get to free power is cutting off the secondary cats.

Fantomas

I'm saying that running a duct to point at your intake manifold does not produce lower intake air temperature. His gains are more likely due to lower outside air temperature.

Accidental L8 apex

Superchargers and turbos produce a ton more heat than engine-heatsoak. I also do not see some ductwork lowering the inside temps of the intake manifold enough to accurately be measured by an iPhone app.

I know that's proof enough for swedepat, but I've not bought into his hype.

EDgineered

Thanks for posting the tip Swedepat. I was thinking about ways to get air up in there.

amg_nik

LOL his first line, "It actually do not add any power" and all of you dingbats are still arguing that it does/doesnt gain power.

amg_nik

Also you gain little to no power with secondary delete. Your biggest gain comes from primaries

swedepat

Do you actually think that i just made one run? *doh*

swedepat

I logged a lot,, i saw huge decrease in tempratures before and after comparing to outside tempratures.
And,, How do you think i cut off a whole second from oem 0-60 time if all my mods haven´t given anything?

Think again!

swedepat

Try it, you will not be disappointed.

A really easy mod, just secure the hose with some zipties down next to foglight, and route the hose up behind the right headlight, then up on engine and shove it down between airpump and inlet manifold, secure with zipties.

Rgds

swedepat

And,, just to mention it.
Edelbrock 'invented' airgap inlet manifolds for old american iron engines due to this problem

swedepat

Data from logs(all in celcius):

Accidental L8 apex

So you get to a better result than just .18 of a second but didn't post it? Seems smart.

And where are you taking temps from? Unless it's from inside the manifold, you're results are meaningless. The outside of my hand feels colder when I blow air across it, but I'm still running 98.6°F inside.

feets

Yeah, I love that "Airgap" hype. It's the same thing Chrysler was doing on their big blocks in the late 50s through the 70s.

swedepat

4.04 as best!

Outside temp in frontspoiler.
Engine airtemp from a probe inside inletmanifold ofcourse.

Don´t make early dumb conclusions that people are dumb, that makes you dumb actually
Been tuning cars for over 30 years now...

I also have changed the inlet gaskets for 1mm thick papergaskets to insulate manifold from heads.
I also have wrapped underside of inletmanifold against heatradiation from engine valley with starterinsulation´.

Everything has been done step by step.
And biggest 'gain' was this cheap hose.

try it yourself, it takes about 5 minutes to do and can be virtually for free, if it doesnt work, then you have something to troll about.

swedepat