STILLEN Dyno numbers
Registered User
Joined: May 2007
Posts: 62
Likes: 0
From: Canada
Why do you guys have to argue over this again and again!!!! Most of the companies who make these performance upgrades provide dyno chart. If you believe it, good! if you don't, that is still good!! Just go by your instinct! If you feel there is gain, good!! if you don't feel anything, go get something else! By the way, how many of you here have Phd degree in Physics? Even if you do, can you prove anybody wrong or right in a very convincing way? I had tried a few intakes, and I ended up with Injen because it gives me the best feeling about my car!! I am waiting for Stillen header, based on our member A.H. dyno result. If you don't believe him, ok, that's fine....
C'mon, go enjoy your driving; be nice to each other. Afterall, we all love Z, otherwise we won't own one. Honestly, I enjoy EVERY single moment I am in my Z!!! I also very much enjoy installing all those performance upgrades.
C'mon, go enjoy your driving; be nice to each other. Afterall, we all love Z, otherwise we won't own one. Honestly, I enjoy EVERY single moment I am in my Z!!! I also very much enjoy installing all those performance upgrades.
Why do you guys have to argue over this again and again!!!! Most of the companies who make these performance upgrades provide dyno chart. If you believe it, good! if you don't, that is still good!! Just go by your instinct! If you feel there is gain, good!! if you don't feel anything, go get something else! By the way, how many of you here have Phd degree in Physics? Even if you do, can you prove anybody wrong or right in a very convincing way? I had tried a few intakes, and I ended up with Injen because it gives me the best feeling about my car!! I am waiting for Stillen header, based on our member A.H. dyno result. If you don't believe him, ok, that's fine....
C'mon, go enjoy your driving; be nice to each other. Afterall, we all love Z, otherwise we won't own one. Honestly, I enjoy EVERY single moment I am in my Z!!! I also very much enjoy installing all those performance upgrades.
C'mon, go enjoy your driving; be nice to each other. Afterall, we all love Z, otherwise we won't own one. Honestly, I enjoy EVERY single moment I am in my Z!!! I also very much enjoy installing all those performance upgrades.
I'm sure the people who make these headers don't have a Phd in Physics either. I mean what's up with the defects in the HR headers? Didn't AH say it hit the steering knuckle or something? They are basically applying traditional concepts to every design (free flow, equal length, piping diameter)..Not rocket science.
If you are optimistic towards headers then by all means purchase the headers and do some before/after dyno runs. Maybe then you can wipe out the rumors.
A few months ago a magazine (I think it was Modified) did quite a few Stillen bolt ons for hte VQ35HR in a G35. The headers gave some top end power, like maybe 3 hp. The only problem was, it lost power below 6500 rpms. This was done with stock cats in place. Afterewards they added the Stillen HFCs and got back all the lost power down low and made quite a bit up top. Someone could say it was the combination of the two (headers and HFC) or you could say it was the HFC's alone. Either way, its going to cost you come money and taking the headers off is not an easy task.
I personally think that it's not worth the time, money or effort. 3hp at redline isnt worth the lower rpm loss.
I personally think that it's not worth the time, money or effort. 3hp at redline isnt worth the lower rpm loss.
Yeah, I was wrong about the article. It wasn't for the HR. The article was July 08 Modified Magazine and showed installs of the headers and then HFC's (I know it isn't the same motor but the parts are nearly identical so it could still be informative).
The headers on the already less efficient DE motor/headers only netted 8 hp at the top end. I say 'only' because it lossed about an average of 6whp and 10 wtq throughout most of the RPM range and made no gains until after 6000 rpms. Maybe there are more gains to be made at the top end with a higher rev limiter however I believe the lower rpm power loss will remain. Im thinking the loss of power will affect most normal driving conditions than gains at redline. Just my opinion. Maybe a new dyno would change my mind.
On a sidenote, you may want to check out the new products at Stillen. It seems as though they are throwing their hat in the ring when it comes to true CAIs. They developed one for the G37. Who knows, maybe it wont be too long before they produce on for the Z. It may be inflated but an 18 whp gain is nothing to sneeze at. Even if its half the amount, its not a bad bolt on.
http://blog.stillen.com/2008/10/stil...the-g37-coupe/
The headers on the already less efficient DE motor/headers only netted 8 hp at the top end. I say 'only' because it lossed about an average of 6whp and 10 wtq throughout most of the RPM range and made no gains until after 6000 rpms. Maybe there are more gains to be made at the top end with a higher rev limiter however I believe the lower rpm power loss will remain. Im thinking the loss of power will affect most normal driving conditions than gains at redline. Just my opinion. Maybe a new dyno would change my mind.
On a sidenote, you may want to check out the new products at Stillen. It seems as though they are throwing their hat in the ring when it comes to true CAIs. They developed one for the G37. Who knows, maybe it wont be too long before they produce on for the Z. It may be inflated but an 18 whp gain is nothing to sneeze at. Even if its half the amount, its not a bad bolt on.
http://blog.stillen.com/2008/10/stil...the-g37-coupe/
Registered User
Joined: Dec 2007
Posts: 48
Likes: 0
From: Aiea, Oahu, Hawaii
I'm still waiting for someone to possibly answer the question that the OP had about the Stillen long tube INTAKES. That is what this thread was supposed to be about, right? Has anyone dyno'd with them? Probably not much of a difference, but if anyone had the info, that would be cool.
j_greene, this post wasn't for you. You must've posted the same time as me.
j_greene, this post wasn't for you. You must've posted the same time as me.
Last edited by Zfan808; Oct 28, 2008 at 11:13 AM. Reason: additional info
^+1
I know A.H. did but it was with headers and a re-tune if I'm not mistaken. I am waiting to see it as a stand alone mod to see what they really do and if cost to HP ratio is even worth all the labor involved to install.
I know A.H. did but it was with headers and a re-tune if I'm not mistaken. I am waiting to see it as a stand alone mod to see what they really do and if cost to HP ratio is even worth all the labor involved to install.
Are you asking about the version II "long tube" that's been out for a while or the version III "ultra long-tube"
?My shop might be ordering the ultra-long tube version for me. I didn't even know it was out yet. It's not on their web-site...(?)
Registered User
Joined: May 2008
Posts: 363
Likes: 3
From: FLA
Not you again...please GTFO. You're so close-minded and stubborn it isn't even funny.
You are the same guy that was arguing about how intakes gain power on the HR motors (before the injen was introduced), when there had already been previous research done by individual members and COBB that showed negligible gains.
Actually, it was in the Injen Dyno thread I predicted it would make power:
Thread
https://my350z.com/forum/vq35hr/3601...ue-cai-hr.html
And my first thoughts on the thread:
https://my350z.com/forum/5898230-post99.html
Hindsight now proves I was correct, as I was about the JWT popchargers as well:
https://my350z.com/forum/vq35hr/3734...-vs-stock.html
Here you are yappin your mouth again, when you're the one spreading misinformation. How ironic
If I remember correctly, the HR motors came with pretty much equal length headers, so many assumed that an aftermarket set would most likely do nothing.
No proof has yet surfaced, but this I can probably guarantee you. Headers for the HR engine will net some gains, but it won't be worth your time and money. You'd be better off getting a good true dual exhaust with some good test pipes.
Really? I'm pretty sure AH bolted on, and tuned with headers for a total gain of around 20whp at peak.
https://my350z.com/forum/vq35hr/3807...o-results.html
https://my350z.com/forum/vq35hr/3819...os-inside.html
The power gained to money spent ratio would make for a bad investment.
I believe Arsh has headers on his HR...and he should be able to tell you whether or not his headers were with the money spent.
KA24...please leave, and never come back. Go back to your RSX forum. I don't have a problem with guys that don't own a Z on this forum, but I do have an issue with guys that are close-minded and try arguing about a car they clearly do not own.
You are the same guy that was arguing about how intakes gain power on the HR motors (before the injen was introduced), when there had already been previous research done by individual members and COBB that showed negligible gains.
Actually, it was in the Injen Dyno thread I predicted it would make power:
Thread
https://my350z.com/forum/vq35hr/3601...ue-cai-hr.html
And my first thoughts on the thread:
https://my350z.com/forum/5898230-post99.html
Hindsight now proves I was correct, as I was about the JWT popchargers as well:
https://my350z.com/forum/vq35hr/3734...-vs-stock.html
Here you are yappin your mouth again, when you're the one spreading misinformation. How ironic
If I remember correctly, the HR motors came with pretty much equal length headers, so many assumed that an aftermarket set would most likely do nothing.
No proof has yet surfaced, but this I can probably guarantee you. Headers for the HR engine will net some gains, but it won't be worth your time and money. You'd be better off getting a good true dual exhaust with some good test pipes.
Really? I'm pretty sure AH bolted on, and tuned with headers for a total gain of around 20whp at peak.
https://my350z.com/forum/vq35hr/3807...o-results.html
https://my350z.com/forum/vq35hr/3819...os-inside.html
The power gained to money spent ratio would make for a bad investment.
I believe Arsh has headers on his HR...and he should be able to tell you whether or not his headers were with the money spent.
KA24...please leave, and never come back. Go back to your RSX forum. I don't have a problem with guys that don't own a Z on this forum, but I do have an issue with guys that are close-minded and try arguing about a car they clearly do not own.
and whats with the name calling, seriously.
Last edited by NISMO_558; Oct 29, 2008 at 12:45 PM.
Per my shop, Stillen gen-III (Ultra long-tube) CAI's are not available for the 350z. They said stillen is looking into it, but they don't even have any projections as to when this might be available.
I'll be getting the Injen long-tube CAI.
I'll be getting the Injen long-tube CAI.
Registered User
Joined: Jul 2007
Posts: 17
Likes: 0
From: Williams
I think the side by side pix don't do the Stillen headers justice. You need to be holding them in your hands. Look into the headers from both ends. Observe the bends on the stock vs. Stillen. Observe the where the 3 tubes exit. I wasn't convinced until my mechanic(who I have faith in) showed me this. I'm having them installed now. Hopefully i'll have more input for you guys after my dyno results.
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