Originally Posted by Fischy13

Does anyone have an exhaust clip of what the PPE headers sound like with factory exhaust? Also - does the dipstick need to be relocated with these guys?

Originally Posted by ExclusivIS

Do different headers produce different sounds, just like exhausts I assume? So an IS-F with PPE headers and JZ exhaust would vary from one with Sikky headers and JZ exhaust... etc etc ...

Originally Posted by infinus

Next time I'm in vegas I'll let you know, we might stop by on our trip but I'm not sure. Seeing as how that's towards the end I don't think we'll spend too much time there since we'll be too poor to gamble. It certainly felt a bit different. That's the highest HP mod I've ever done to a car so it was certainly fun. I'm going to have a thread on here following our progress on the trip and a live GPS tracker showing our location as we go along.

Originally Posted by infinus

I love the sound of headers + Joe Z It gives it a mean grumble. Here is a video of my car with the sikky one's. Just a quick blast. I'll be in NY with my F sometime during the 2nd week of June if you wanna hear it in person before making the investment.

Oh also you drop the subframe and the engine just goes down a bit, its not like removing the whole engine.

http://www.youtube.com/watch?v=dKoQvg2QbpE

Originally Posted by caymandive

The car does indeed get louder POST header install but in a good way for most. Though if you install high flow cats to a car with the headers/JoeZ exhaust combo, the car actually tones down significantly and drone is almost eliminated. <<< I believe it is actually quieter and deeper sounding than with the JoeZ exhaust alone! With just the JOEZ exhaust and stock headers I know the car still drones quit a bit and I can tell you that with high flow cats added to your header/JoeZ combo that you will be a very happy camper. The car sounds very sophisticated in a pissed off Lexus sorta way. No resonance and little to no drone.

I do not believe different headers for this car will make a difference in sound. The exhaust configuration will contribute the most with the various midpipe configurations, mufflers and resonators available.

From what I have noticed MPG hasn't been affected.


I also have a video of my car with headers/JoeZ exhaust that I love. It certainly doesn't sound like a cheap V8 even without HF cats.

http://www.youtube.com/watch?v=QyD2mWWPRrk

Originally Posted by LexISguy

Are you running a cat less setup? If so how is the cabin noise?

Originally Posted by earpig

Just rolled 1k on my 2011 and ready for more sound. I guess I've missed out on this group buy but are these headers available otherwise like the Sikky's.
From all I've read so far I'd prefer these... Will there be another group?

Originally Posted by lowrideraz

Just an update for you folks. Five months and 2,400 miles after header installation, my CEL came on. It happened on my way home from Las Vegas 2 weeks ago. The day after I got home, it disappeared. On Tuesday of this week, it reappeared and would not go away. I went up to PPE this afternoon, and the scan tool reported it as the dreaded code P0430. So, even with cats, it MAY report a code. PPE, Paul, installed the o2 simulator (conditioner) and all is now well. I'm still enjoying my headers and the added power feels great. I just thought I'd update you folks.

While I was there, Paul told me he hasn't been sending out the conditioner for installations that will contain a cat, based on my experiences. This will now change, and he will send out the conditioner with all headers.

BTW, the conditioner installation requires no exhaust work, it's all electronic down from up top under the hood, and once installed it's hidden under a cover, and is undetectable unless some one is looking for it.

Lou