Contour Enthusiasts Group Archives Forums Modifications Duratec Performance AFE Filter compared to competition + Pic's pg4

Greg why you got to be such a SCROOGE!!

Greg I think you and Dan are looking at the charts wrong, that spike at the end is not the AFE, that's the Monster Flow. The AFE created more HP across the board than the Monster Flow accept at about 3700-4200rpm. Beleive me Greg, if John had a FMU the numbers would have been much favorable for the AFE especially if he had an exhaust setup. With the monster Flow that's just not the case, it doesn't need the FMU as the flow is satisfactory for the stock ECU. As STAZ mentioned, even he had to up the SAFC 3% just to accomadate for the AFE, and that's just guessing. The only place where the AFE fell short to the Monster Flow was in the TQ curve in the lower RPM, I can't explain it, but I'm sure the problem can be directed to the stock programmings.

By the way, you have a Money Order coming your way

Actually Micah, I looked again and I think you are looking at it wrong. Notice that run 7 starts a few hundred RPM before run 4 (see HP & Torque together at the beginning). Monster Flow is making more torque AND more HP that AFE until 4400 RPM. It is not possible to make more torque but less power at the same RPM power....

It may be that resetting the computer helped but what we see with the dyno is a big low RPM power loss for whatever reason. And filters cause flow restictions not "backpressure" as exhaust restrictions can. You can't compare the two as someone tried to (no effect on exhaust gas scavenging).

I am NOT saying the AFE is not good (I am neutral on the subject at this point), just that the dyno shown does not prove its that great. Overall average power shown was no better than Monster Flow (though I agree better to have power over 4500 than below), which is a filter dyno proven worse than KKM and much worse than K&N.

DAN I overlooked the Dyno Chart since I have it in my possession and apparently there are mistakes on the actual graph itself from the hp/tq print out and the actual simulated Graph Power/Torque Curve. I'm gonna call JOHN and see what I can dig up. I'm simulating my own Graph Chart using the hp/tq dyno print out. And Yes I was looking at it wrong so thanks for correcting me and apologize for my accusation

The term "Back Pressure" is used in kind of lamen terms reffering actually to "Pressure Drop!" As an example, if the Pressure of Air lbs. per square inch was 15 outside (dirty air)of the filter and inside (clean air) was 10lbs.per sq" that is the pressure change and in result a pressure drop as the air enters the intake track. AFE's design brings that pressure drop to near 0, though it's impossible to actually achieve 0.

I can tell you for a fact that in every case that I'm aware of on actual dyno charts viewed the AFE always outflowed the K&N and the dyno #'s always support it, in some cases on small hp applications the difference was only 1hp but on higher hp applications the difference was more substantial. I've already told Chris Hightower that I'll send him a AFE Filter to test on the Dyno with the Turbo and I look forward to seeing what kind of results they get. I think Chris plans on using the S&B Filter.

Ok i have the KKM, want to get a new filter, what size is the inlet of the KKM adapter?

Thanks
Rob

Your Adapter is 3-1/2", and yes I do have a Filter for your application. If you have further ?'s go ahead and shoot me an email and I'd gladly assist you there..emails in sig

Well me and John discussed the Dyno Charts, becasue I was starting to get confused as well with no color seperation. John cleared it all up for me and John swears that the performance difference is a big difference from the Monster Flow although the dyno charts don't demonstrate that in the lower range because the charts are an inaccurate mock up. After examining the charts DAN NIXON you are correct, the AFE comes on at 4400rpm at least on the current charts. DEMON you were wrong, the spike is the Monster Flow not the AFE. Anyhow I made a graph of my own using the accurate hp/tq number chart and not the simulated graph and amazingly the Graph provided is so off at least for the AFE it's not even funny almost as if a different filter was used. John doesn't have the Monster Flow dyno numbers, needs to get it from dyno guy, but when I get those numbers I'll make up a more accurate chart and try and post it. Then you'll see that the AFE actually comes on alot sooner than 4400rpm.

Just a question??? Who of you think that at WOT you will go any lower than 4000rpm through shifts. The AFE performs where you need it the most at WOT, and 4-5hp @wheels more in the higher RPM's can make a noticable difference if getting on the GAS!!!

Here is the AFE Filter on my SVT. It's hooked up to a Cobra MAF(with the SVT's sampling electronics) via the cone from an Intense performance intake (I sidelined the S&B filter that originally came on it). Flows really well and made a big difference all through the rev range as was noticed on the )2 readings on the S-AFC as well as the Max flow %'age readout out the S-AFC monitors.

Thanks for the Pics STAZ!!

What the Picture doesn't show you up close is the much deaper pleats as well as the velocity stack in the cone and that the Red Housings is all Polyurethane.

If you want to get a good baseline of restriction etc,pick a dyno in a 'clean' shop, take off the filter ,insert a straight open rubber tube(vary the length between pulls)....that will give you a better baseline than playing musical filters.....