I volunteered myself to be the guinea pig for the new AFE intake for the E60 M5
. So the day came today and I headed to RPI to see what this thing was all about. I was told over and over again that it wouldn’t make power, in fact, I would actually lose power since it is not a sealed box and all it would be sucking in would be air that is warmer than ambient from the engine bay. I had an AFE intake on my E46 M3 that I really liked, so I decided to take the plunge and see what it had to offer on the dyno!
List of engine mods:
Charcoal Filters removed
Install was a relative pain in the a$s. Eloy from RPI discovered a few issues (which we worked around) and we got it done in about 2.5 hours, which was much longer than expected. This was definitely attributed to QC issues on AFE’s part. Nothing major, just annoyances that translated into some improvisation.
We did a few baseline pulls to see where we were starting from. These were disappointing, but that’s for another post. At least we had something to go off of.
I have attached the dyno so you can see.
005= setup as listed above – hood closed
006= AFE Intake – RPI Scoops "blocked" – hood closed
008= AFE Intake – RPI Scoops – hood closed
010= AFE Intake – RPI Scoops – hood open
As you can see, my baseline was low to begin with. I’ll work on that this week. But there is a clear drop in RWHP with the AFE Intake compared to the baseline run. The drop is in the 20-25+ range!!!! Even with the hood open, the AFE loses big power throughout the midrange of the power band until almost 7000 rpms where it matches and barely goes higher than stock.
I’m definitely making a change – back to stock intake – or possibly Dinan. I will be returning the AFE and expect a full refund considering this proof that their product is worthless!! One of the main reasons that I got the intake was for the additional sound from the engine. Funny thing is that I cant even tell the difference in sound!!! Driving home from RPI, I could definitely feel the difference in power from my previous setup. It sucks!
This product gets an F------ (that’s an F minus minus minus minus minus minus)
Oh well, it was fun to meet everyone at RPI!