Stillen Headers + Berk HFCs self-install report

ChrisSlicks · 04-11-2009, 09:16 PM

Quote:

Originally Posted by wstar

Crossover point is about 6.6k.

Crossover is always at 5252 rpm because HP is calculated from torque according to this formula:
HP = (Torque x RPM) / 5252

You might have different scales for torque and HP which would visually throw that off on the printout.

wstar · 04-12-2009, 12:21 AM

Quote:

Originally Posted by ChrisSlicks

Crossover is always at 5252 rpm because HP is calculated from torque according to this formula:
HP = (Torque x RPM) / 5252

You might have different scales for torque and HP which would visually throw that off on the printout.

Heh, good point. Why on earth they put two different scales down the sides of the paper for values that are so close to each other is beyond me

semtex · 04-11-2009, 06:15 PM

Thx for the update. I'm glad to hear that the torque curve remains flat!

If you want me to try to generate a graph, PM me. But yeah, 95 bytes sounds suspect. Not sure why he did it this way tho. He could have saved the actual graph as a jpg file. I just bring a jump drive with me and tell them to make a copy to my jump drive.

wstar · 04-11-2009, 06:50 PM

Quote:

Originally Posted by semtex

Thx for the update. I'm glad to hear that the torque curve remains flat!

If you want me to try to generate a graph, PM me. But yeah, 95 bytes sounds suspect. Not sure why he did it this way tho. He could have saved the actual graph as a jpg file. I just bring a jump drive with me and tell them to make a copy to my jump drive.

I did go back and get the correct files right after. There's a zipfile of the full raw data and a link to the dynojet software in the other thread: 7AT w/ I-H-C-E Dyno'd

BerkTech · 04-13-2009, 12:30 AM

Great thread here. Lots of good info. To answer some of your questions, the Berk HFC's locate the flanges & support braces at the same points as the OEM cats. They will fit the same as the OEM cats do.

Every exhaust will take a tiny bit of adjustment in order to line everything up correctly. With slip fits you have even more adjustment available in the alingment of the pipes. On tip that will ease fitment issues is tighten bolts/slip fits from the header towards the exhaust tips. It's easier to straighten things towards the end of the exhaust vs. the middle of the exhaust.

Out of curiosity, do any of you guys with the OEM cats and aftermarket exhausts hit that same part of the car under there?

Cheers guys!

semtex · 04-13-2009, 07:31 AM

Quote:

Originally Posted by BerkTech

Great thread here. Lots of good info. To answer some of your questions, the Berk HFC's locate the flanges & support braces at the same points as the OEM cats. They will fit the same as the OEM cats do.

Every exhaust will take a tiny bit of adjustment in order to line everything up correctly. With slip fits you have even more adjustment available in the alingment of the pipes. On tip that will ease fitment issues is tighten bolts/slip fits from the header towards the exhaust tips. It's easier to straighten things towards the end of the exhaust vs. the middle of the exhaust.

Out of curiosity, do any of you guys with the OEM cats and aftermarket exhausts hit that same part of the car under there?

Cheers guys!

RCZ's exhaust hits the crossmember, and he has the stock cats still.

RCZ · 04-14-2009, 12:09 PM

Yup, mine has stock cats and it was sitting on the cross member. All fixed now.

04-11-2009, 06:15 PM	#3 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 33	Thx for the update. I'm glad to hear that the torque curve remains flat! If you want me to try to generate a graph, PM me. But yeah, 95 bytes sounds suspect. Not sure why he did it this way tho. He could have saved the actual graph as a jpg file. I just bring a jump drive with me and tell them to make a copy to my jump drive. __________________ "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.

04-13-2009, 12:30 AM	#5 (permalink)
BerkTech The370Z.com Sponsor Join Date: Jan 2009 Location: Irvine CA Posts: 279 Drives: Lots.... Rep Power: 273	Great thread here. Lots of good info. To answer some of your questions, the Berk HFC's locate the flanges & support braces at the same points as the OEM cats. They will fit the same as the OEM cats do. Every exhaust will take a tiny bit of adjustment in order to line everything up correctly. With slip fits you have even more adjustment available in the alingment of the pipes. On tip that will ease fitment issues is tighten bolts/slip fits from the header towards the exhaust tips. It's easier to straighten things towards the end of the exhaust vs. the middle of the exhaust. Out of curiosity, do any of you guys with the OEM cats and aftermarket exhausts hit that same part of the car under there? Cheers guys! __________________ While the others type fast... Berk Technology goes fast.... See you at the track! OUR NEW PHONE NUMBER: (714) 546-BERK READ THE BERK BLOG HERE

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04-14-2009, 12:09 PM	#7 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	Yup, mine has stock cats and it was sitting on the cross member. All fixed now.