Nissan 370Z Forum

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-   Intake/Exhaust (http://www.the370z.com/intake-exhaust/)
-   -   Berk Exhaust Production with X-Pipe (http://www.the370z.com/intake-exhaust/12006-berk-exhaust-production-x-pipe.html)

MightyBobo 03-17-2010 07:53 PM

Quote:

Originally Posted by ChrisSlicks (Post 451627)
Dyno's only measure torque, HP is calculated.

But basically you're saying that the middle of your graph is screwy and so you may have not got an accurate peak torque measurement?

Well, right. Basically everyone peaks HP somewhere around 7K and it levels off. Mine was supposedly at 7.5K and still rising, and I barely hit 275. Dynojet only registered 205ish torque or so. So, something didnt seem right. Never did get a response from Altered Atmosphere on this...

ChrisSlicks 03-17-2010 08:11 PM

Quote:

Originally Posted by MightyBobo (Post 451645)
Well, right. Basically everyone peaks HP somewhere around 7K and it levels off. Mine was supposedly at 7.5K and still rising, and I barely hit 275. Dynojet only registered 205ish torque or so. So, something didnt seem right. Never did get a response from Altered Atmosphere on this...

HP is calculated (continuously) as Torque * RPM / 5252.

So if your peak torque measurement is low then there should also be a dip in the HP curve between 4-5k rpm. The torque plot and HP plot always cross over at 5252 rpm provided they are plotted on the same scale.

schrute 03-18-2010 01:26 AM

Quote:

Originally Posted by 370zdub (Post 450944)
I will probably be at a dyno day April 24, but until then I'm SOL on getting a dyno run in.

Hey Dub,

Where's the dyno day?

370zdub 03-18-2010 01:41 AM

Hey man, Its in Grand Junction, CO, from what I have been told. I will try to get some official details and let you know by pm man!

willtangclan 03-19-2010 07:08 PM

Anyone have a video with stock cats? Tracking number says Thursday but i'm dying to hear how it sounds.

1slow370 03-21-2010 12:22 AM

well i'll be dynoing my car unfortunately it will be totally useless as it will be affected by the new intake flywheel testpipes, as wheel as all the other crap i have done.

BOLIO 671 03-21-2010 10:33 AM

Quote:

Originally Posted by 1slow370 (Post 456791)
well i'll be dynoing my car unfortunately it will be totally useless as it will be affected by the new intake flywheel testpipes, as wheel as all the other crap i have done.

So you don't have a base to go off of? Still would be nice to see what your Z puts out though! Awesome that you guys have access to Dyno's...We had a Dyno shop here a few years back...Unfortunately the owner of the Dyno shop passed away in a bad car crash ( R. I. P. Will), and no one ever picked up after it..

1slow370 03-22-2010 02:44 PM

nah never got out and did a baseline it's looking like it'll be a while anyway still waiting on some parts for the rear end to arrive.

theDreamer 03-26-2010 09:05 AM

Forgot to ask this, what size resonators come in the Berk exhaust? Anyone measure or remember them posting this info?

Thanks.

370Zsteve 03-26-2010 02:11 PM

http://www.youtube.com/watch?v=nbn6a8w5Myo&eurl

semtex 03-26-2010 02:16 PM

Steve, do you have anything else besides the CBE? Like HFCs?

370Zsteve 03-26-2010 02:22 PM

Quote:

Originally Posted by semtex (Post 465807)
Steve, do you have anything else besides the CBE? Like HFCs?

Nope that is with stock cats. The camera was only about 4 feet from the pipes. :icon17:

370Zsteve 03-26-2010 02:23 PM

Quote:

Originally Posted by theDreamer (Post 465141)
Forgot to ask this, what size resonators come in the Berk exhaust? Anyone measure or remember them posting this info?

Thanks.

No idea Dreamer, but there are some good pics in the threads, you might be able to get a feel for the size.

semtex 03-26-2010 02:42 PM

Quote:

Originally Posted by 370Zsteve (Post 465827)
Nope that is with stock cats. The camera was only about 4 feet from the pipes. :icon17:

It doesn't sound bad, but adding HFCs would give it a deeper tone.

370Zsteve 03-26-2010 02:43 PM

Quote:

Originally Posted by semtex (Post 465870)
It doesn't sound bad, but adding HFCs would give it a deeper tone.

no question about it. but what about volume? I'm pretty happy with the volume as it is.


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