Custom Intake Progress
06-27-11, 01:26 PM
#6
What you are doing looks very interesting but a question for you. Are you going to be able to have a sealed unit to maintain the ram air pressure? The intake you have shown will be primarily a CAI, for it to be ram air it would need to be a sealed unit like the Vararam for example.
http://www.vararam.com/
http://www.vararam.com/
06-27-11, 02:02 PM
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What you are doing looks very interesting but a question for you. Are you going to be able to have a sealed unit to maintain the ram air pressure? The intake you have shown will be primarily a CAI, for it to be ram air it would need to be a sealed unit like the Vararam for example.
http://www.vararam.com/
http://www.vararam.com/
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06-27-11, 03:27 PM
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What you are doing looks very interesting but a question for you. Are you going to be able to have a sealed unit to maintain the ram air pressure? The intake you have shown will be primarily a CAI, for it to be ram air it would need to be a sealed unit like the Vararam for example.
http://www.vararam.com/
http://www.vararam.com/
06-27-11, 05:58 PM
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I can tell you that i stuck a filter and did test down where your duct comes in and picked up a great amount of hp and tq. i dont have access to the data but the pics are out there and so is the data that has backed it up! good job way to think outside the box you will love it and it will perform for you.
08-06-11, 10:02 PM
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Well I have some "results" for this contraption. I have some OBD2 software now and I was able to plug my laptop into the ISF. I was able to monitor wheel speed, rpm, barometric pressure, intake air temp, mass air flow rate, engine coolant temp, exhaust temp, throttle position, a/f voltages, timing advance on cylinder 1 and a host of other sensors all in real time. I have made a cap to close off the tube, so I played with it a little. Just a few quick observations... I just did highway driving, not much else.
With the intake tube open the intake air temperature dropped a little quicker than with the tube closed. I didn't pay attention for too long, but the timing seemed more advanced with the intake tube closed. Ex: range from 36-38 degrees with tube closed, vs 35-37 degrees with the tube open. This was at a cruise of 2000rpm, approx 118kph. The air flow rate also seemed to be a little higher with the tube open... again I didn't look too hard, and I didn't save files to compare. The difference was probably negligible. The biggest difference, and I did this with the onboard reading from the car, was the fuel economy. Cruising with the tube closed off, I was able to get 9.2L/100km, which is 29.8mpg, about. Cruising with the tube open, I was able to get 8.8L/100km, which is 32.3mpg, about. I did this over a distance of 250km each with the tube open, and closed. No speed change each way luckily, 2000rpm, 118kph. Each way has its fair share of ups and downs, and the elevation above sea level of each city is only different by about 50ft....
I'm sure over time I will be able to look at these sensors more in depth, and save files and whatnot... I am trying to get into a stock ISF to plug in to and monitor its sensors to compare. One thing I have noticed is the throttle position reading seems to not jive with my software. Because the ISF at full throttle says it is only open 81.xxxxxxxxxxxx%, and at idle, no throttle it is 16.9xxxxxxxxxxx%.... so that is a bit odd. Also the intake air temp seems to stabilize around 10C or 50F from from the ambient with or without the intake tube, it just seems to come down a little faster with the tube open. This is when cruising at highway speeds anyways, the temp is higher when around town, but I haven't monitored it enough to be able to give you an idea.... This is all for now, its late, I'm tired, I sleep now.
With the intake tube open the intake air temperature dropped a little quicker than with the tube closed. I didn't pay attention for too long, but the timing seemed more advanced with the intake tube closed. Ex: range from 36-38 degrees with tube closed, vs 35-37 degrees with the tube open. This was at a cruise of 2000rpm, approx 118kph. The air flow rate also seemed to be a little higher with the tube open... again I didn't look too hard, and I didn't save files to compare. The difference was probably negligible. The biggest difference, and I did this with the onboard reading from the car, was the fuel economy. Cruising with the tube closed off, I was able to get 9.2L/100km, which is 29.8mpg, about. Cruising with the tube open, I was able to get 8.8L/100km, which is 32.3mpg, about. I did this over a distance of 250km each with the tube open, and closed. No speed change each way luckily, 2000rpm, 118kph. Each way has its fair share of ups and downs, and the elevation above sea level of each city is only different by about 50ft....
I'm sure over time I will be able to look at these sensors more in depth, and save files and whatnot... I am trying to get into a stock ISF to plug in to and monitor its sensors to compare. One thing I have noticed is the throttle position reading seems to not jive with my software. Because the ISF at full throttle says it is only open 81.xxxxxxxxxxxx%, and at idle, no throttle it is 16.9xxxxxxxxxxx%.... so that is a bit odd. Also the intake air temp seems to stabilize around 10C or 50F from from the ambient with or without the intake tube, it just seems to come down a little faster with the tube open. This is when cruising at highway speeds anyways, the temp is higher when around town, but I haven't monitored it enough to be able to give you an idea.... This is all for now, its late, I'm tired, I sleep now.
08-07-11, 11:01 AM
#12
Well I have some "results" for this contraption. I have some OBD2 software now and I was able to plug my laptop into the ISF. I was able to monitor wheel speed, rpm, barometric pressure, intake air temp, mass air flow rate, engine coolant temp, exhaust temp, throttle position, a/f voltages, timing advance on cylinder 1 and a host of other sensors all in real time. I have made a cap to close off the tube, so I played with it a little. Just a few quick observations... I just did highway driving, not much else.
With the intake tube open the intake air temperature dropped a little quicker than with the tube closed. I didn't pay attention for too long, but the timing seemed more advanced with the intake tube closed. Ex: range from 36-38 degrees with tube closed, vs 35-37 degrees with the tube open. This was at a cruise of 2000rpm, approx 118kph. The air flow rate also seemed to be a little higher with the tube open... again I didn't look too hard, and I didn't save files to compare. The difference was probably negligible. The biggest difference, and I did this with the onboard reading from the car, was the fuel economy. Cruising with the tube closed off, I was able to get 9.2L/100km, which is 29.8mpg, about. Cruising with the tube open, I was able to get 8.8L/100km, which is 32.3mpg, about. I did this over a distance of 250km each with the tube open, and closed. No speed change each way luckily, 2000rpm, 118kph. Each way has its fair share of ups and downs, and the elevation above sea level of each city is only different by about 50ft....
I'm sure over time I will be able to look at these sensors more in depth, and save files and whatnot... I am trying to get into a stock ISF to plug in to and monitor its sensors to compare. One thing I have noticed is the throttle position reading seems to not jive with my software. Because the ISF at full throttle says it is only open 81.xxxxxxxxxxxx%, and at idle, no throttle it is 16.9xxxxxxxxxxx%.... so that is a bit odd. Also the intake air temp seems to stabilize around 10C or 50F from from the ambient with or without the intake tube, it just seems to come down a little faster with the tube open. This is when cruising at highway speeds anyways, the temp is higher when around town, but I haven't monitored it enough to be able to give you an idea.... This is all for now, its late, I'm tired, I sleep now.
With the intake tube open the intake air temperature dropped a little quicker than with the tube closed. I didn't pay attention for too long, but the timing seemed more advanced with the intake tube closed. Ex: range from 36-38 degrees with tube closed, vs 35-37 degrees with the tube open. This was at a cruise of 2000rpm, approx 118kph. The air flow rate also seemed to be a little higher with the tube open... again I didn't look too hard, and I didn't save files to compare. The difference was probably negligible. The biggest difference, and I did this with the onboard reading from the car, was the fuel economy. Cruising with the tube closed off, I was able to get 9.2L/100km, which is 29.8mpg, about. Cruising with the tube open, I was able to get 8.8L/100km, which is 32.3mpg, about. I did this over a distance of 250km each with the tube open, and closed. No speed change each way luckily, 2000rpm, 118kph. Each way has its fair share of ups and downs, and the elevation above sea level of each city is only different by about 50ft....
I'm sure over time I will be able to look at these sensors more in depth, and save files and whatnot... I am trying to get into a stock ISF to plug in to and monitor its sensors to compare. One thing I have noticed is the throttle position reading seems to not jive with my software. Because the ISF at full throttle says it is only open 81.xxxxxxxxxxxx%, and at idle, no throttle it is 16.9xxxxxxxxxxx%.... so that is a bit odd. Also the intake air temp seems to stabilize around 10C or 50F from from the ambient with or without the intake tube, it just seems to come down a little faster with the tube open. This is when cruising at highway speeds anyways, the temp is higher when around town, but I haven't monitored it enough to be able to give you an idea.... This is all for now, its late, I'm tired, I sleep now.
~Dv8
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