Stillen Headers installed - Review/Pics/Vid/Dyno

RCZ · 04-22-2009, 03:50 PM

Hmm, confusing indeed. It makes no sense....how much driving did u do with the headers on before the dyno?

semtex · 04-22-2009, 03:53 PM

Quote:

Originally Posted by RCZ

Hmm, confusing indeed. It makes no sense....how much driving did u do with the headers on before the dyno?

About 3.5 days worth. A good mix of normal and hard driving, incl WOT runs up to 150mph.

SoCal 370Z · 04-22-2009, 04:12 PM

Semtex,

I wonder if you were to go to a single pipe exhaust whether you would regain some torque and hp?

RCZ · 04-22-2009, 04:12 PM

Hmm....this isn't at all what I wanted to hear. I guess the stock headers are the only good part of the stock design...

Things just got a little more complicated.

You know something though, I think I may have a suspicion about the cause of this. Switching to PM.

tvfreakazoid · 04-22-2009, 04:34 PM

Can u make a video of how it sounds from the outside!

wstar · 04-22-2009, 05:12 PM

Quote:

Originally Posted by tvfreakazoid

Can u make a video of how it sounds from the outside!

I think I'm going to do that tonight. I was planning to recheck my header<->cat bolts and front O2s for any new looseness this evening anyways, and get started on some of my misc projects (like washer fluid delete, maybe the TB coolant delete too). After I'm done with that, late tonight when there's not much traffic around, I think I'll find an isolated road where I can leave the camera on the ground and make a few passes at various speeds/rpms/throttles.

semtex · 04-22-2009, 04:52 PM

You know what, guys? The loss of low-end torque isn't really as bad as it looks on that graph. Keep in mind that the units on that graph are in Newton Meters (Nm). The gap wouldn't look that bad if it were in ft-lbs. (Sharif said he had an issue with the last firmware upgrade from DD in Australia.)

RCZ · 04-22-2009, 05:18 PM

hmm what bothers me is that I like the torque. I like that jerk when I punch it in the power band. Are you saying that is gone?

wstar · 04-22-2009, 05:21 PM

Quote:

Originally Posted by RCZ

hmm what bothers me is that I like the torque. I like that jerk when I punch it in the power band. Are you saying that is gone?

It's not gone in the power band, we're just debating whether it's gone in the low end.

semtex · 04-22-2009, 05:21 PM

Quote:

Originally Posted by RCZ

hmm what bothers me is that I like the torque. I like that jerk when I punch it in the power band. Are you saying that is gone?

No, it's still there. It's just a little . . . 'softened' at lower rpms. It's too bad we don't live in the same city, otherwise I'd just let you drive it.

Btw, I'm about to post a video of the dyno.

RCZ · 04-22-2009, 05:25 PM

Move down here. 305 > ATL

on a more serious note.... I e-mailed Josh about what I was thinking, waiting for a reply.

Oh and good that it isn't gone.

If the gains I can expect from having a full STILLEN setup are the ones advertised on their site. (14.5whp and 10+tq) then I will install... may have to look into wrapping them too. Keeping heat in the headers makes the turbo spool faster!.....err...I switched cars...no longer applies...though it may help with flow.

semtex · 04-22-2009, 05:39 PM

Quote:

Originally Posted by RCZ

Move down here. 305 > ATL

on a more serious note.... I e-mailed Josh about what I was thinking, waiting for a reply.

Oh and good that it isn't gone.

If the gains I can expect from having a full STILLEN setup are the ones advertised on their site. (14.5whp and 10+tq) then I will install... may have to look into wrapping them too. Keeping heat in the headers makes the turbo spool faster!.....err...I switched cars...no longer applies...though it may help with flow.

Hmm...I'm not sure how they're getting 10+ tq. Well, maybe if the rest of the exhaust is stock? I think that's what RelentlessRY did right? And he said he made tq on the top end but lost a bunch in the mid-range?

semtex · 04-22-2009, 05:43 PM

Alright, here's the video. (I'd better get some rep pts, tvfreakazoid!

I wasn't going to bother doing this until you asked.)

SMJane_Again · 04-22-2009, 06:02 PM

Thanks for the external vids, Semtex! That second graph was about as linear as it gets for whp. Even though the headers aren't quite where you wanted them, what is your impression of your setup as it stands?

S.

NA&CH · 04-22-2009, 06:02 PM

Awesome man. Nice results on Sharif's dyno

Chris

04-22-2009, 04:12 PM	#3 (permalink)
SoCal 370Z A True Z Fanatic Join Date: Feb 2009 Location: US of A Posts: 2,842 Drives: Answers Rep Power: 35	Semtex, I wonder if you were to go to a single pipe exhaust whether you would regain some torque and hp? __________________ ( Click to show/hide ) Why I NEVER say NO to the Panda Lou Fusz!!!

04-22-2009, 04:34 PM	#5 (permalink)
tvfreakazoid A True Z Fanatic Join Date: Jan 2009 Location: kommie kali Posts: 1,238 Drives: 2015 Audi S5; 6spd. Rep Power: 10326	Can u make a video of how it sounds from the outside! __________________ Mudders milk

04-22-2009, 04:52 PM	#7 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 55 Posts: 5,995 Drives: People to drink Rep Power: 34	You know what, guys? The loss of low-end torque isn't really as bad as it looks on that graph. Keep in mind that the units on that graph are in Newton Meters (Nm). The gap wouldn't look that bad if it were in ft-lbs. (Sharif said he had an issue with the last firmware upgrade from DD in Australia.) __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

04-22-2009, 05:25 PM	#11 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	Move down here. 305 > ATL on a more serious note.... I e-mailed Josh about what I was thinking, waiting for a reply. Oh and good that it isn't gone. If the gains I can expect from having a full STILLEN setup are the ones advertised on their site. (14.5whp and 10+tq) then I will install... may have to look into wrapping them too. Keeping heat in the headers makes the turbo spool faster!.....err...I switched cars...no longer applies...though it may help with flow. Last edited by RCZ; 04-22-2009 at 05:27 PM.

04-22-2009, 05:43 PM	#13 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 55 Posts: 5,995 Drives: People to drink Rep Power: 34	Alright, here's the video. (I'd better get some rep pts, tvfreakazoid! I wasn't going to bother doing this until you asked.) __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

04-22-2009, 03:50 PM	#1 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	Hmm, confusing indeed. It makes no sense....how much driving did u do with the headers on before the dyno?

04-22-2009, 04:12 PM	#4 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	Hmm....this isn't at all what I wanted to hear. I guess the stock headers are the only good part of the stock design... Things just got a little more complicated. You know something though, I think I may have a suspicion about the cause of this. Switching to PM.

04-22-2009, 05:18 PM	#8 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1120	hmm what bothers me is that I like the torque. I like that jerk when I punch it in the power band. Are you saying that is gone?

04-22-2009, 06:02 PM	#14 (permalink)
SMJane_Again Base Member Join Date: Nov 2008 Location: COS, CO Posts: 137 Drives: 18 Golf R Rep Power: 18	Thanks for the external vids, Semtex! That second graph was about as linear as it gets for whp. Even though the headers aren't quite where you wanted them, what is your impression of your setup as it stands? S. __________________ ~S.M. "Don't look back. Someone might be gaining on you." -Satchel Paige

04-22-2009, 06:02 PM	#15 (permalink)
NA&CH Enthusiast Member Join Date: Dec 2008 Location: Nipples Florida Posts: 298 Drives: Looking for PW 370 Rep Power: 292	Awesome man. Nice results on Sharif's dyno Chris

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