Athlon
Member
Hey, guys. I'm sorry about the delay. I've had this beautiful sounding exhaust since July of this year. I had meant to upload but had been busy with work and ...forgetting. I posted this with the pre-fix 3.5, but I think it basically applies to all engines. I was initially looking for a header solution for our cars and was talking to UpRev here in Austin when they told me about Paul at PPE Engineering actually designing headers for his 2012 FX35 as well as an exhaust! Mine is the first commercial set sold. So I did get a special discount. I had the Ark Grip installed prior to switching to this exhaust. I also have a Stillen Gen 3 370Z intake installed prior with that setup and continued it with the PPE Engineering exhaust. My baseline whp with the Stillen intakes and Ark Grip exhaust was 289 whp when the car was dynoed with that setup in the fall of 2015. I was able to gain 9 to 10 hp in the mid-range over the Ark Grip Exhaust on the dyno when it was tested in the July Texas heat. UpRev estimated that would translate more to 12 to 15whp gain if you remove heat and humidity as a factor. Also, Keep in mind. My set up had the catalytic converters on the H pipe. One would definitely get more gains without any catalytic converters which is an option as well. I take it this was due to the headers. The overall whp remained the same at 289, but I'm thinking this was due to how hot the weather was: 70 degrees in the fall for the Ark Grip vs 105 degrees in the summer for the PPE exhaust. I'll post the pics of my dyno when I get a chance. I included Paul's dyno for the headers un-tuned below. The price of the Valve-controlled catback with HFCs is about $2853. It uses a relay switch that can be slotted into an empty factory space. I have it pictured below with the red top next to the VDC switch. You can get the setup without cats, but Paul noted a strong fuel smell akin to an old muscle car without the cats installed. I think his dyno results may be without cats actually. The exhaust valve closes with the press of a button but opens up automatically above 3500RPM. It can be left open of course. Downshifts sound AWESOME! The headers were $1450. Yes. I love the FX that much enough to take the plunge. lol I had UpRev tune my car to give me those results I listed earlier. Without further adieu, here are the pics and videos. I need to do a take off video when I get a chance.
A pic of the button placement install for activating the valves.
Dyno compared to my stock FX35 run from a year ago. Overall, a 28 whp and 25 torque gain with this header, intake, and cat-back combo tuned vs stock with just Ark Grip.
Dyno compared to my tuned Ark Grip, Fast Intentions 370z HFCs, and Stillen intake setup from last year. You can see the improved gain of 9 to 10whp in the mid-range. Keep in mind the temperature difference as well of 88 degrees vs 70 degrees.
I included Paul's initial dyno of the untuned headers vs his completely stock setup. He gained about 19 whp from the headers. Keep in mind that he has the set up without catalytic converters when he did this particular dyno.
A pic of the button placement install for activating the valves.
Dyno compared to my stock FX35 run from a year ago. Overall, a 28 whp and 25 torque gain with this header, intake, and cat-back combo tuned vs stock with just Ark Grip.
Dyno compared to my tuned Ark Grip, Fast Intentions 370z HFCs, and Stillen intake setup from last year. You can see the improved gain of 9 to 10whp in the mid-range. Keep in mind the temperature difference as well of 88 degrees vs 70 degrees.
I included Paul's initial dyno of the untuned headers vs his completely stock setup. He gained about 19 whp from the headers. Keep in mind that he has the set up without catalytic converters when he did this particular dyno.
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