Drivetrain Testing the Mini Madness JCW Filter Upgrade
#1
Testing the Mini Madness JCW Filter Upgrade
Speednut let me know he was doing this, and asked if I wanted to take a little data. I said sure and off we went!
First off, the JCW filter replacement is expensive. No matter what, this upgrade will eliminate this expense as it uses a re-usable filter. Also, the Madness instructions (very complete for sure) also suggest some modifications to the box that would keep the flap open all the time.
We went even further, and took all that crap off! No flap, no vacuum resevoir, etc.
After our little data session, Dave (speednut) finished off the parts removal and sealed the box up with some Al tape.
The only signs we were here is the new hose clamp, and the missing vacuum diaphragm.
So, what did we find? This total change improves things a little bit. But some of the data is baffeling. Here's the pressure pre-SC
I think it's cool that you can see the flap open so well. But the stock JCW filter, with just this data, seems to flow better. Let's look at boost.
Here the Madness Filter is doing better in boost. Let's look at density.
Here the Madness is showing a bit better performance as well. As a check, let's look at calculated mass air flow. This is how much air the ECU thinks it's getting.
The ECU sees a bit of difference as well. Not a lot, but a bit. Really, we'd need to run the stock JCW filter with the modded box and the madness filter without the mods to have a complete data set, but what do you expect for free!
Matt and Dave,
Dr Obnxs and SpeedNut
First off, the JCW filter replacement is expensive. No matter what, this upgrade will eliminate this expense as it uses a re-usable filter. Also, the Madness instructions (very complete for sure) also suggest some modifications to the box that would keep the flap open all the time.
We went even further, and took all that crap off! No flap, no vacuum resevoir, etc.
After our little data session, Dave (speednut) finished off the parts removal and sealed the box up with some Al tape.
The only signs we were here is the new hose clamp, and the missing vacuum diaphragm.
So, what did we find? This total change improves things a little bit. But some of the data is baffeling. Here's the pressure pre-SC
I think it's cool that you can see the flap open so well. But the stock JCW filter, with just this data, seems to flow better. Let's look at boost.
Here the Madness Filter is doing better in boost. Let's look at density.
Here the Madness is showing a bit better performance as well. As a check, let's look at calculated mass air flow. This is how much air the ECU thinks it's getting.
The ECU sees a bit of difference as well. Not a lot, but a bit. Really, we'd need to run the stock JCW filter with the modded box and the madness filter without the mods to have a complete data set, but what do you expect for free!
Matt and Dave,
Dr Obnxs and SpeedNut
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#8
It's been so long...
that I don't really remember! But I do remember that it wasn't too much trouble, not that this helps at all. But what this all means is that the biggest driver for the filter switch is to get away from the high cost replacements, not really to get much better performance.
Matt
Matt
#11
#12
I did as well, and I noticed considerable more power after adding it. I wonder if the statement should read "...with a proven 4-5 HP gain after replacing your dirty stock filter"
#13
Any time...
that air undergoes an expansion or contraction, it's tempurature changes. That's why just looking at pressure is never really enough to know if you're getting more air into an engine.
Matt
Matt
#16
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