Stillen Exhaust with Berk HFCs

semtex · 03-23-2009, 07:28 AM

Quote:

Originally Posted by 2bits

Do we know roughly how much of that 37whp was the berk, and how much was the cat-back?

Well, that's the funny thing. Stillen claims +18 whp from their cat-back. Berk claims +19 whp from their HFCs. Now, we all know that we can't expect to just add the two together and expect a total gain of +37 whp, right? Yet . . . that's pretty much bang on what happened. If we use the 254.2 that Mike got from bone stock as a baseline just minutes before I put my car on the same dyno, then we have a gain of 37.5 whp. 'Ricer math' actually appears to have worked in this instance! So, to answer your question, if we go back to the claimed numbers from the manufacturers, it would appear that it's almost an even 50/50 between the two components.

Devil Z · 03-23-2009, 01:55 AM

Quote:

Originally Posted by semtex

Finally got around to doing a dyno. Here's the dyno sheet, and I made a new video as well.

Next up is installing the Stillen G3 intakes. I'll try to dyno after that as well.

No offence, but I don't like these numbers with those mods

Nice car very nice

semtex · 03-23-2009, 07:35 AM

What don't you like? You realize this is a Dyno Dynamics, right? They come in lower than even Mustang Dynos. 291.7 on a Dyno Dynamics = approx. 344 on a DynoJet!

Give this thread a read if you haven't seen it yet:
http://www.the370z.com/vq37vhr/2199-...alculator.html

JohnnyBgood · 03-23-2009, 08:42 AM

Semtex,

These numbers are sweet. I'm expecting my cats tomorrow and will have them and the Stillen exhaust installed sometime this week. I'm looking around Austin for a dyno to hopefully get before and after numbers on the same car.

semtex · 03-23-2009, 09:10 AM

Quote:

Originally Posted by JohnnyBgood

Semtex,

These numbers are sweet. I'm expecting my cats tomorrow and will have them and the Stillen exhaust installed sometime this week. I'm looking around Austin for a dyno to hopefully get before and after numbers on the same car.

Cool! Pls post your before/after results to this thread, if you don't mind. As more people get this combo, it'd be nice if we can use this thread to compare everyone's experiences and results. I know that thus far, this thread has been all about my car only, but that's just because I'm the first one on this forum to try this combo. My intent is for this thread to be open for everyone who tries this combo to post their impressions and results.

cotizi · 03-23-2009, 08:24 PM

Quote:

Originally Posted by JohnnyBgood

Semtex,

These numbers are sweet. I'm expecting my cats tomorrow and will have them and the Stillen exhaust installed sometime this week. I'm looking around Austin for a dyno to hopefully get before and after numbers on the same car.

Let me know what you find. I live in Austin and am picking up my Z tomorrow!

JohnnyBgood · 03-24-2009, 08:14 AM

Not having much luck finding a place that will do the dyno for me, and my install is scheduled for Thursday. We'll see what happens.

VTalumni · 12-01-2009, 02:53 PM

Quote:

Originally Posted by JohnnyBgood

Semtex,

These numbers are sweet. I'm expecting my cats tomorrow and will have them and the Stillen exhaust installed sometime this week. I'm looking around Austin for a dyno to hopefully get before and after numbers on the same car.

Did you ever find a place to dyno your car? Maybe you posted it in another thread?

Endgame · 03-23-2009, 08:51 AM

Quote:

Originally Posted by semtex

What don't you like? You realize this is a Dyno Dynamics, right? They come in lower than even Mustang Dynos. 291.7 on a Dyno Dynamics = approx. 344 on a DynoJet!

Give this thread a read if you haven't seen it yet:
http://www.the370z.com/vq37vhr/2199-...alculator.html

Sweet. well done Semtex....

M.Bonanni · 03-23-2009, 06:22 PM

Those are some impressive numbers! Even though its not exactly a direct comparison, I am glad that these results back up my results with just the Berk HFCs!

semtex · 03-23-2009, 08:33 PM

Well, my YouTube video is drawing some skepticism judging from the comments left there. It kinda irritates me when people imply that I'm being dishonest just because they're not used to seeing such significant gains. I'm just to sharing my results for the benefit of the community, after all. I invited them to join the forum if they want to discuss.

YouTube - 370Z w/ Stillen Exhaust & Berk HFCs: Dyno Results

Josh@STILLEN · 03-23-2009, 09:03 PM

Quote:

Originally Posted by semtex

Well, my YouTube video is drawing some skepticism judging from the comments left there. It kinda irritates me when people imply that I'm being dishonest just because they're not used to seeing such significant gains. I'm just to sharing my results for the benefit of the community, after all. I invited them to join the forum if they want to discuss.

YouTube - 370Z w/ Stillen Exhaust & Berk HFCs: Dyno Results

LOL.. do yourself a favor.. don't argue with folks on youtube.. they have a lot more time than you can possibly imagine..

Some hating on our video as well. It seems like a large number.. and it is! Let them call BS..

YouTube - STILLEN 370Z Dual Cat-Back Stainless Exhaust System

zZSportZz · 03-23-2009, 09:44 PM

Interesting numbers.

Semtex, do you have any plans on racing? I'm curious as to what your times would be with those mods

theDreamer · 03-24-2009, 09:29 AM

Semtex, thanks for all the reports.

ChrisSlicks · 03-24-2009, 01:28 PM

I'm impressed by the gains. Looking forward to seeing the intake results on top.

03-23-2009, 07:35 AM	#3 (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: 33	What don't you like? You realize this is a Dyno Dynamics, right? They come in lower than even Mustang Dynos. 291.7 on a Dyno Dynamics = approx. 344 on a DynoJet! Give this thread a read if you haven't seen it yet: http://www.the370z.com/vq37vhr/2199-...alculator.html __________________ "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. Last edited by semtex; 03-23-2009 at 07:59 AM.

03-23-2009, 06:22 PM	#10 (permalink)
M.Bonanni The370Z.com Sponsor Join Date: Nov 2008 Location: Las Vegas Posts: 2,575 Drives: Fast Rep Power: 1321	Those are some impressive numbers! Even though its not exactly a direct comparison, I am glad that these results back up my results with just the Berk HFCs! __________________ MikeBonanni.com Twitter: http://www.twitter.com/MikeBonanni Facebook: http://www.facebook.com/MBonanni36 Function > Form

03-23-2009, 08:33 PM	#11 (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: 33	Well, my YouTube video is drawing some skepticism judging from the comments left there. It kinda irritates me when people imply that I'm being dishonest just because they're not used to seeing such significant gains. I'm just to sharing my results for the benefit of the community, after all. I invited them to join the forum if they want to discuss. YouTube - 370Z w/ Stillen Exhaust & Berk HFCs: Dyno Results __________________ "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.

03-24-2009, 09:29 AM	#14 (permalink)
theDreamer A True Z Fanatic Join Date: Feb 2009 Location: Texas Posts: 30,879 Drives: 370z Rep Power: 4211	Semtex, thanks for all the reports. __________________ theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN theDreamer's Silvia // URAS // GREDDY Houston Zs // Facebook // Twitter // Instagram

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03-23-2009, 08:42 AM	#4 (permalink)
JohnnyBgood Base Member Join Date: Mar 2009 Location: Austin Posts: 55 Drives: 2016 Sport Tech 7AT Rep Power: 17	Semtex, These numbers are sweet. I'm expecting my cats tomorrow and will have them and the Stillen exhaust installed sometime this week. I'm looking around Austin for a dyno to hopefully get before and after numbers on the same car.

03-24-2009, 08:14 AM	#7 (permalink)
JohnnyBgood Base Member Join Date: Mar 2009 Location: Austin Posts: 55 Drives: 2016 Sport Tech 7AT Rep Power: 17	Not having much luck finding a place that will do the dyno for me, and my install is scheduled for Thursday. We'll see what happens.

03-23-2009, 09:44 PM	#13 (permalink)
zZSportZz A True Z Fanatic Join Date: Mar 2009 Location: Maryland Posts: 1,095 Drives: 370z Blk on Blk 6MT Rep Power: 19	Interesting numbers. Semtex, do you have any plans on racing? I'm curious as to what your times would be with those mods

03-24-2009, 01:28 PM	#15 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 654	I'm impressed by the gains. Looking forward to seeing the intake results on top.

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