This will be a fun test! 😁 I suspect it may pull some of the intake charge out the exhaust during overlap! Maybe make some good pops from the exhaust! Kinda like a two stroke without a torque pipe on it!
@@volvo09 all you would have to do is put a commercial jet air starters intake to the cars exhaust. However the jet air starter would be choked by the car and would probably hurt something in the car.
There needed to be an air seal between the hood and the air intake. That much gap was allowing the wind to blow around the air intake instead of building any kind of pressure. There should have been some kind of a gasket between the two, maybe a foam donut or something. If you brought the blue intake hose through the hood, you could seal around that with some duct tape.
To me it looked like that footage was filmed while they were still putting the whole thing together, I'm pretty confident they made sure everything was sealed for the actual testing.
Yeah the mounting holes on the scoop and the gaps between the scoop and the hood and intake pipe are a big issue. The idea would be to take in large amount of air, while compressing it down through a smaller diameter opening, which creates pressure and accelerates the airflow. As the scoop was basically a funnel, it would had needed to be airtight. No holes and a seal between the scoop and the hood. And we never really saw if there was a seal between the hole in the hood and the intake pipe, if not, the whole scoop would had been pointless. But as it had holes and no airtight seal, they were basically just blowing air around, but not building up any pressure
@@SwapBlogRU If it was properly sealed there should have been a gasket of some kind on the hood and there would have been a pan on/under the plumbing the MAF was in before they put the screen over it. Additionally, 0 to any speed really isn't relevant to ram air intakes. There's little effect until at least 30 mph. So roll on testing would have been more representative. Granted, the amount of drag a scoop that size will cause will outweigh the benefits and without a seal, most of that air is just being funneled under the car through the engine bay.
yea cus i know that ej205 pretty much inside and out and i had a boost tube pop off on mine and it literally wouldnt idle it would just die so its a miracle he actually got it to run
You can't put the MAF in turbulent airflow like that, not to mention the housing you put it in was much larger than what it was tuned for (big no-no). The engine was running so poorly because it was running really, really lean. Really, you would have been better off just leaving it out.
so you took a turbo charged motor and made it naturally aspirated... The scoop on the subi is for the intercooler. To cool it cus its a top mount. To get better performance place a front mounted intercooler and use the hood scoop into the turbo inlet. Also .5 bsr is around 7 psi so a few holes in the wastegate line will increase boost pressure (old school way lol)
The point is a turbo car computer and sensors are built to measure and adapt to pressurized air. A naturally aspirated car can only go up to 1 ATM and will lean out after. So you compare the car power output running at slow speeds vs high speeds. It doesn't matter that it's slower than stock, you're measuring the difference at speeds. That of course won't help their no seal intake design though.
@@Novousit wont help with a turbo car anyways. No way will this force more air than the turbo is already gonna give it. Only way i see that this may be beneficial is to help cool engine since it isnt a sealed intake system . But even then i doubt there will be any if at all difference in power.
@@Novous if they were testing with a carb that makes sense but anything with a MAF, ecu and injectors should change the fuel maping to match the mixture in this scenario.
"We disabled the turbo, now the air has a massive restriction sucking air in the blocked intake, the ECU probably went into limp home mode, but hey guys on the 4th run if I'm learning to modulate the pedal, I can feel it picking up."
The turbo being disconnected, the ECM is still using the base turbo FUEL MAP, so it's going to run super rich... at least at WOT, it's still going to try to correct... He mentioning it at around 8:00. At least we should use A NA car with a MAP only setup.
The C6R Le Mans corvette would generate ~15kPa of positive pressure upstream of the restrictors @ 185mph on the Mulsanne. When this was simulated on the dyno, it was good for nearly 75hp
Also check the scoop is airtight. You may have air pressure leaking out between the bolted panels. For an unobstructed view of the road, use a transparent scoop, made as one piece.
There is high-pressure air just above the bonnet and low pressure air 5 - 10 cm above the bonnet, you need high pressure air. So the stock scoop is in the high-pressure range and the make shift scoop is way above the high pressure into low pressure which is why its not boosting, the big scoop will have turbulent air inside and not only that it will have big drag also. If you had lots of smaller scoops on the bonnet leading into the hole it will make for better ram air. This is why fast cars have scoops on the sides and top of the car to get the high pressure air running along the body.
I played with these for years. the only thing that kicked the n/a into gear was perfect timed cams, symmetrical stainless exhaust, a huge throttle bore...and hovering 11 to 1 static compression...and a timing curve to work through the flat 4 flat spot.(you gurus know what I mean) Makes the turbo more appealing doesn't it.
I wounder if they know that they are over spinning the turbo by leaving the inlet disconnected. This is how I killed a turbo on a build of mine (was driving it N/A to get the base map right without boost, killed the turbos bearings)
If this idea is what I think it is (ram jets for cars?). It cannot work with this test. Ram jets needs sufficient speed before it works properly (around 800km/h I think). This is when the air intake supersedes the drag. So maybe test it but not 0-100kmh instead 100-200kmh. 🧐
This would be better suited to a normally aspirated car that has also had bigger injectors (to help the ECU inject more fuel in when air pressure increases). Also, there is a HUGE gap between hood scoop/hood and air intake. To do a 'Ram Air' type design, you NEED a fully sealed intake (as you got on Kawasaki's legendary ZZR1100/600 motorbikes, and all other 'Ram Air' designed engine air intakes since. It's no good having all that air collected, channeled down into a smaller and smaller area for it to then flow out before it reaches the inlet manifold. Ideally you'd want a wide mouthed 'Horn'/'Trumpet' design that squashes the large amount of air into a smooth unobstructed tube that reduces into a smaller and smaller area so that the air pressure increases as it enters the engine, like a natural 'Turbo'/'Supercharger' (the higher the vehicle speed, the higher the air pressure at front of vehicle). Also, collecting air into the wide mouthed 'Trumpet' inlet should ideally be where air pressure is highest, ie around the front bumper/grill area. 🤔😏 Maybe a future project - 'Ram Air' Lada? (Because even the old BUT FAST ZZR1100's were carburetta fed) 🤔😏 😎🇬🇧
Why didn’t you test the hood scoop with the turbo still hooked up? The engine is tuned for a turbo…..you’d have to be going 300 mph to somewhat duplicate the air ramming down that hood scoop vs a turbo!
Run a roof scoop the entire length of the car tapering smaller towards the intake pipe then run it to the MAF right before the manifold. This should create a rushing and pressurized air stream
What happen if you put a motorcycle engine in the trunk and have it rep to 160 mph or more and attachment it to the driver wheel tranmission. When put on neutral the motorcycle engine will take over. Lock on the neutral gear at 160 mph for boost. Can you make a video for that.
Try boosting the intercooler with CO2 ice, or feeding liquid air to the engine, carefully of course and adjust the Lada carburetor / Subaru injectors of course for such massive increase in oxygen. If the oxygen sensor even can handle that.
Whoop! I owned a Forester STI when I lived in Japan. Really fun car, same body style, I miss my SFSTI too fun .. Bonneville Salt Flats with that big old hood scoop might be useful ..
Just wondering, that must not to be the most powerfull car/and gasoline engine anyways, if it takes around 30 seconds from 0-100km/h (for americanos it is around 0-60mph).
Beautiful car though! Wish we had that variant in the US. But I think we need a do over G54 with a seal between the intake and the hood. Not that it would matter that much without the turbo. But it would matter
What if you made an air scoop that covers the roof with a massive silicone pipe going through the cockpit into the intake?? Bet you get cleaner colder air up ther and it'll partially act as a spoiler to bob the whole thing down 🤙
i am not shure the size of the turbo and engine can handle that much air anyways, you would need a massive engine and a massive turbo to be able to use that much air. Apart from its not entirely sealed, alot of air is escaping the scoop.
So the hot side of the turbo is still getting the exhaust air? Its working to turn that turbine, getting none of the benefits. The ECU is probably taking a shit and just trying to get you home, do it with a NA car.
Taking the maf out of a 2.75 inch pipe and installing it in a 4 inch one is surefire way to make it run like absolute crap. At least seal the scoop to the pipe. Would be cool to see!
overfuelling (ECU is fuel mapped for the turbo) and exhaust restriction (the turbo) is bound to make it slower than stock, no matter what you do, with that particular car.
Prediction. It won't work as well as a turbo. A larger scoop will have little effect over a certain size. It just makes drag. Pressure boost at most car speeds is minimal. Aircraft are another matter.
You unhooked the charge pipe on a turbo car? Good way to destroy a turbo making it over spin. Also as others said it needs to be sealed to even work. We know this works based on drag racers using this method.
Yes, the over-spool had me worry for all of 3 seconds, before, I remembered who was working with it. It'll end its life in these "Tests" that Garage54 will do with it, haha.
Cars ECM will not allow engine to take in more air instead it will slow down the engine to make it run as normal as possible you have to tune the ECM to allow for more fuel
Did this 25 years ago to a vw golf 1600cc above 140kph I'd had more power than the gti version plus my top speed was way higher too and everyone thought I was mad. Although my scoop was in the grill and not on the bonnet/hood.
Pull a trailer with 20 Shop Vacs running on a generator, then bring the piping to the front of the car from the exhaust ports of the shop vacs, see how much boost you would get, then try sucking the exhaust and compare the power.
This will work to some extend but not with a scoup, they need a venturi, a giant funnel that is connected to the intake with a sealed joint, this open pipe config is totally inefficient.
i think it's a little bit to....small It can be used as a sail but it needs to be bigger...yes because right now it's more like adding a big wall pulled by the car, and yes air can get into the engine but the scoop is unable to pressurise the air and to inject it into the engine
Hold up - you 'disconnected' the turbo but left it bolted on? So you have a lovely intake and an exhaust with a MASSIVE restriction? Not only does it still have a turbo tune (and would have been trying to compensate for the lack of airflow) but no exhaust scavenging and what is basically a 2cm diameter pipe blocking the exhaust. It would have had exh gases being blown out the intake almost the whole rev range so definitely no boost happening here!!
