I think its great that someone has the equipment to measure pressure drop, and I greatly appreciate that, but pressure drop is only one variable in intake performance. Generally, I don't wait for people to spoon feed me data if I can get it myself, but he said he has the IAT data and that he's going to post it.

 

This thread has inspired me to get off my lazy @ss and build a sheet metal cold air intake box to go around my gigantic K&N filter/4" intake pipe that I have feeding into my GT-35R turbo.

I have comparison data from drag strip runs on a cool day (aprox 70 F) showing intake temps in the upper IC pipe going from 111 F after idling in the staging lanes for a while droping down to 102 F after going WOT when the car hits about 20 mph and then rising from there up to a peak of 135 F at the top of 4th gear.

Since I will not be going to the top of 4th gear on the street, another data point at the top of 3rd gear is 92F.

At the moment my custom air box is held in by friction and gravity..... after I get it riveted together I will do some data logging after a long period of idleing to get a comparison log.

Keith

PS: One of the first things I noticed was how much quieter my car is.... no induction turbo whine any more!

 

pics!

I lack motivation to make one of these

 

https://www.evolutionm.net/forums/sh...d.php?t=140094

 

did this when i had my 8 + utec

https://www.evolutionm.net/forums/sh...55&postcount=1

 

all marketing stuff....JDM all the way.....

 

What are u smoking??
(sorry.. cant resist....)

 

JDM FTLThe price is ridiculos but i won't mind if my car run 9's

 

Hey guys,

I finished building my sheet metal air box today, then took it out of the car to do some "back to back" temperature testing.

With 75F ambiant temps and the car starting out "ice cold" I let the car idle for 15 min. Looking at the data log temperatures were very stable until the radiator fan started. At that point air temperature rapidly start to climb. After the 15 min of idleing I did some 1,2,3 pulls at 27 psi of boost. With air temps starting at 102F after the 15 min idleing temperatures droped to 95F in 1st gear, climb back to 100 in 2nd, and hit a peak of 107F at the top of 3rd gear. Then I did some cruising around to see what temps would do. Temperatures stabalized at 91F while cruising at 65 mph. I then came home and let the car idle for another 15 min. Over that period of time air temperatures rose to 120F.

All that effort, and not much to show from a performance stand point. Ambient temperature is about 77F for the second set of data, and most of the data shows temperatures 2F higher than they were without the box.... just like the rise in ambient temperature! The only time it showed a difference was cruising at a steady speed. Temps then were only 4F over ambient rather than 6F over ambient without the air box.

The only real benefit I gained from all my efforts was to make the car significantly quieter. I no longer have the turbo whine compeating with the radio when doing a gental acceleration like I had without an air box.

Keith

PS: The rise in ambient temperature also effects intercooler efficiancy, and all of my test data is post IC temperatures in the upper IC pipe... so there probably were some benefits, but they are most likely negligable.


PPS: If you would like to see picures of this setup head over here and take a look.... http://www.evotuners.net/forums/showthread.php?t=1368

 

linky no worky

 

Link fixed, thanks for the heads up!

Keith

PS: No making fun of my "metal crafting" skills.... I know it looks like a retarded monkey with a chain saw put it together

 

Bah you have to login to see the pics lol... tooo... lazzzzy

 

Not worth the trouble to see something that looks like a retarded monkey with a chain saw made it? Man, too bad. I know it takes about a min to register there.... but it would take me a half hour to resize them and post them here.

Keith

 

Is there a difference in performance? I have recently reverted my intake back to stock from the K&N, because of driveability issues. They weren't major, but were noticeable especially when quickly coming off full throttle/boost (@3500-4000 rpm)the car would bog slightly. Also, the acceleration was not as smooth, and the car seemed to be holding back (maybe pulling timing, I don't know). AMS didn't offer a bracket to hold the maf and filter, and wonder if engine movement is as issue.

 

Does the new Buschur piece actually do a better job at filtration than the old red one? I have 86k on the odo of my evo, about 84k of which are with the Buschur filter. At 89k I'm going to send in a sample of oil to Blackstone for analysis. I have a suspicion that my silica levels are goign to be pretty high due to the free flowing nature of this filter.

Currently I'm looking into a similarly shaped filter made by BMC as a viable replacement. Only problem I can see will be the need for an adapter piece for the maf to the filter since my model Buschur filter has the adapter built into it.