Well, at the time of this video, it was a matter of money. That and my Stillen was working just fine. However, I actually DID end up getting the Motordyne TDX V2 Exhaust. In fact, I was one of the very first to pick that one up. I have a whole other video dedicated to that if you want to check it out.
I'm actually not sure. I did dyno after the headers, but I think there was some other issue with the car that was causing a drop in power. Either that or the original dyno was recalibrated. But after I did a before/after dyno for removing the headers, it showed that they had given me about 11whp at around 6600 rpm. The numbers that Stillen advertised were actually spot-on. So to answer your question in a roundabout way, yeah, it should have put me in the 280's.
They're essentially advanced straight pipes. While typical straight pipes simply replace the catalytic converters with simple pipes (i.e. absolutely no resistance or emissions control), these have specially tuned Helmholtz resonance chambers built into them to 1) eliminate unwanted frequencies that cause rasp or droning in the exhaust note and 2) actually help the exhaust flow, giving you more power and torque than either any set of High Flow Cats or Straight Pipes.
Question, how did you make gains? I understand you had it dyno'd and have proof. I would just like an explanation b/c from what I understood, headers + HFC's + catback = no back end pressure.
I am by no means arguing, just curious. One reason as to why I'm so curious is b/c I am thinking about putting headers on my G to compliment my FI HFC's.. But I'm worried if I upgrade my catback system along with headers I wont have enough back end pressure.
I understand what you're saying. However, I wouldn't get too wrapped up in the back-pressure issue. While I don't claim to fully understand it, I can certainly tell you that just because you open it up doesn't mean there is no more pressure. Depending on the car and depending on the mods, the pressure difference can be played with a great deal. You'll be fine with a full header-back exhaust. People do it all the time.
I just put my Stillen headers up for sale, if you're interested.
Yeah it really is hard to tell just from the video. There was definitely rasp reduction. Now, it sounds more like a quasi-rasp - a bit of a mechanical sound with a high harmonic. However, even that is limited. It's like the car wants to rasp like it used to, but won't. Before, it was like an a raspiness on-off switch at 3300RPM. I have the Stillen exhaust to blame entirely for any raspy tendencies that are left. It also removed the drone I was getting at low RPMs.
@oNAGAo Ok. Sounds like more comparisons are needed. I have RTP's right now uninstalled and if the ART pipes have the same rasp-reduction capabilities as a resonated pipe, then I might as well sell these and move on up to something with better power.
Possibly. I just worry that more video will simply fail to capture the differences - like it might be something you have to hear in person. The guy who installed them on my car actually says he doesn't hear any rasp anymore. I think it would be a safe bet to assume that these would both perform and sound better than RTPs. But that's really just educated guessing on my part.
They cost me $660 up front, but I'm getting a $200 discount for getting independent, same-day dyno data and sound clips. I actually just wrote up the first independent review of these on my350z. The link is in the video details on the side, if you're interested.
why didnt you get the motordyne exhaust?
11aamiller 1 year ago
@11aamiller
Well, at the time of this video, it was a matter of money. That and my Stillen was working just fine. However, I actually DID end up getting the Motordyne TDX V2 Exhaust. In fact, I was one of the very first to pick that one up. I have a whole other video dedicated to that if you want to check it out.
watch?v=Han8fRSMovA
oNAGAo 1 year ago
@MrOblivion582
I'm actually not sure. I did dyno after the headers, but I think there was some other issue with the car that was causing a drop in power. Either that or the original dyno was recalibrated. But after I did a before/after dyno for removing the headers, it showed that they had given me about 11whp at around 6600 rpm. The numbers that Stillen advertised were actually spot-on. So to answer your question in a roundabout way, yeah, it should have put me in the 280's.
oNAGAo 1 year ago
@oNAGAo what are the ART pipes and what do they do for you
cbeck611 1 year ago
@cbeck611
They're essentially advanced straight pipes. While typical straight pipes simply replace the catalytic converters with simple pipes (i.e. absolutely no resistance or emissions control), these have specially tuned Helmholtz resonance chambers built into them to 1) eliminate unwanted frequencies that cause rasp or droning in the exhaust note and 2) actually help the exhaust flow, giving you more power and torque than either any set of High Flow Cats or Straight Pipes.
oNAGAo 1 year ago
Question, how did you make gains? I understand you had it dyno'd and have proof. I would just like an explanation b/c from what I understood, headers + HFC's + catback = no back end pressure.
I am by no means arguing, just curious. One reason as to why I'm so curious is b/c I am thinking about putting headers on my G to compliment my FI HFC's.. But I'm worried if I upgrade my catback system along with headers I wont have enough back end pressure.
socboy001 1 year ago
@socboy001
I understand what you're saying. However, I wouldn't get too wrapped up in the back-pressure issue. While I don't claim to fully understand it, I can certainly tell you that just because you open it up doesn't mean there is no more pressure. Depending on the car and depending on the mods, the pressure difference can be played with a great deal. You'll be fine with a full header-back exhaust. People do it all the time.
I just put my Stillen headers up for sale, if you're interested.
oNAGAo 1 year ago
Sounds no different, just more hiss from the lack of backpressure.
pfregeolle 1 year ago
@pfregeolle
As I said before, the difference is very hard to notice from just a Youtube video. In actuality there was a significant difference.
oNAGAo 1 year ago
$660 :(
Bo7sson 2 years ago
Hard to tell from the video, but was there any rasp-reduction to you? They sounded no different on my end.
js04r 2 years ago
Yeah it really is hard to tell just from the video. There was definitely rasp reduction. Now, it sounds more like a quasi-rasp - a bit of a mechanical sound with a high harmonic. However, even that is limited. It's like the car wants to rasp like it used to, but won't. Before, it was like an a raspiness on-off switch at 3300RPM. I have the Stillen exhaust to blame entirely for any raspy tendencies that are left. It also removed the drone I was getting at low RPMs.
oNAGAo 2 years ago
@oNAGAo Ok. Sounds like more comparisons are needed. I have RTP's right now uninstalled and if the ART pipes have the same rasp-reduction capabilities as a resonated pipe, then I might as well sell these and move on up to something with better power.
js04r 2 years ago
@js04r
Possibly. I just worry that more video will simply fail to capture the differences - like it might be something you have to hear in person. The guy who installed them on my car actually says he doesn't hear any rasp anymore. I think it would be a safe bet to assume that these would both perform and sound better than RTPs. But that's really just educated guessing on my part.
oNAGAo 2 years ago
Sounds great! How much did the ART pipes cost you?
WickedG35 2 years ago
They cost me $660 up front, but I'm getting a $200 discount for getting independent, same-day dyno data and sound clips. I actually just wrote up the first independent review of these on my350z. The link is in the video details on the side, if you're interested.
oNAGAo 2 years ago