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Stillen Exhaust with Berk HFCs

I had the Stillen exhaust and the Berk HFCs installed together last night. Total installation time was around 4 hours, and I had a professional mechanic do it for me.

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Old 03-06-2009, 01:08 PM   #1 (permalink)
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Talking Stillen Exhaust with Berk HFCs

I had the Stillen exhaust and the Berk HFCs installed together last night. Total installation time was around 4 hours, and I had a professional mechanic do it for me. Installing the cats was a pain in the butt. Nothing to do with the Berks, mind you. The challenge was with getting the stock cats off. The bolts are super-tight; we actually snapped a universal swivel joint in the process of trying to break one of the bolts loose. Luckily I had a spare. If you're planning to install the Berks, make sure you have one of those long extensions for your ratchet, and also make sure you have an O2 sensor socket.

Initial driving impressions: In a word, WOW. I am so glad I did this. The sound is awesome. The clips I have below do not do the sound justice (but it's the best I can do with my digital camera - sorry about the crappy high-pitched hum). I haven't put the car on a dyno, and don't plan to until I get the Stillen G3 intakes installed. But I noticed a difference in throttle response immediately. I know, I know, some of you are probably muttering derisive comments about the 'butt dyno' right now. So let me explain what I mean. I've actually had to re-acclimate to the throttle tip-in at launch. Like the first few times I started from a standstill, my launches were actually jerky because it was as if I had nailed the throttle a little too hard. So here I am trying to just get moving at a normal pace in traffic, and my head snaps back like I'm attempting a hard launch! So this is what I mean when I say that throttle response is improved.

This combination does not drone while cruising. But make no mistake, under load of acceleration, this combo is a lot louder than the stock setup. To me, it's loud in a good way -- aggressive sounding. There's a little raspiness here and there, but nothing intolerable. Nothing that doesn't put a smile on my face.

Btw, this thread is not intended to be for my car only. I'm the first on this forum to install this combo, so I know that for now it'll seem like it's all about my car. But as others try out this combo, it is my hope that others will add their experiences to this thread as well.

I have pics of the exhaust in the following album: Nissan 370Z Forum - semtex's Album: Stillen Exhaust pics

Here's a couple of pics from that album:





And here are my video clips. One is from the exterior, and I also made one from the inside of the car. Enjoy! Btw - This is the first time I've ever made videos and posted to YouTube, so go easy on me if it sucks.

http://www.youtube.com/watch?v=Xcv6Sk_G9MY

http://www.youtube.com/watch?v=EBCP-gHoaW4


Edit: Added more clips - consolidating them to original post.

Launch Clip
http://www.youtube.com/watch?v=qyZ1wryQ0C4

Drive-by Clip
http://www.youtube.com/watch?v=kq13E6tSVck

Synchro-Rev Match Clip
http://www.youtube.com/watch?v=3-u4sm6j2CM

Extended Drive Video
http://www.youtube.com/watch?v=fGn-myf_rX0

Dyno Results
http://www.youtube.com/watch?v=QYgqLoUNBQY

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Last edited by semtex; 03-24-2009 at 06:48 PM. Reason: Consolidating video clips for this thread.
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Old 03-06-2009, 01:15 PM   #2 (permalink)
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sounds beautiful!! will sound even deeper when u get the intakes! great pics n vid
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Old 03-06-2009, 01:17 PM   #3 (permalink)
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Sounds good!
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Old 03-06-2009, 01:33 PM   #4 (permalink)
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i like it! nice man congrats.

one thing i personally would do, since i hate anything shiny on cars, is paint that muffler matte black with high temp-tolerant paint
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Old 03-06-2009, 01:33 PM   #5 (permalink)
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Question Installation Pointers

Can you please comment on the installation of both the HFC, and the exhaust? Any caveats, and pointers for the DIYer? Thanks.
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Old 03-06-2009, 01:53 PM   #6 (permalink)
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it sounds deep . I like it
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Old 03-06-2009, 01:53 PM   #7 (permalink)
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Wow, that sounds beautiful. Very european. I have Nismo exhaust on my 370z already and will be installing Berks HFC's and jim wolf popchargers tonight. I hope mine sounds like that.
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Old 03-06-2009, 01:59 PM   #8 (permalink)
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Did the mechanic use any Liquid Wrench of any kind to help loosen the bolts?
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Old 03-06-2009, 02:01 PM   #9 (permalink)
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great pics/review/vids

however you are missing IMO one of the most important vid clips.....the drive by on load so that you really hear how it sounds while on the accelerator
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Old 03-06-2009, 02:08 PM   #10 (permalink)
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In reference to your butt dyno, and on a scale of 1 to 10 (10 being the highest) how would rate your new setup? And is there a bias on the left or the right cheek?
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Old 03-06-2009, 02:29 PM   #11 (permalink)
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Quote:
Originally Posted by SoCal 370Z View Post
Can you please comment on the installation of both the HFC, and the exhaust? Any caveats, and pointers for the DIYer? Thanks.
SoCal -

Do not know if you saw it, but Double Down put an excellent DIY article on the Berk HFC's install. See http://www.the370z.com/diy-section-d...c-install.html

It was also reported as difficult. I am considering HFC's but will take it to a mechanic.
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Old 03-06-2009, 03:33 PM   #12 (permalink)
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Quote:
Originally Posted by MaximumPwr View Post
Did the mechanic use any Liquid Wrench of any kind to help loosen the bolts?
Just some Tri-Flow.

Quote:
Originally Posted by SoCal 370Z View Post
Can you please comment on the installation of both the HFC, and the exhaust? Any caveats, and pointers for the DIYer? Thanks.
The only real pointer I have is the one I mentioned about it being real tough to break loose the bolts on the stock cats. You need to open up the hood and reach the bolts from the top with a big long extension. Just to be clear, I did not do this on my own. One of my best friends is a mechanic and he comes over and takes care of whatever I need done. He won't accept money from me either (so I just give him the occasional gun to express my gratitude). Anyway, the point I'm trying to make is that I'm sure I'd have a lot more pointers if I actually did this by myself, but I didn't, so . . .

Also, make sure you have a proper O2 sensor socket. My mechanic the way the O2 sensors are positioned, there's really no way to get them off without that special socket. I had to run out to Autozone to buy one. (Which was fine with me -- I'll use any excuse to buy new tools.)

Quote:
Originally Posted by batman_4 View Post
great pics/review/vids

however you are missing IMO one of the most important vid clips.....the drive by on load so that you really hear how it sounds while on the accelerator
Good call. I'll have to see if I can find someone help me with this (i.e., hold the camera while I drive by).
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Old 03-06-2009, 03:51 PM   #13 (permalink)
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Thanks for the great feedback and video's Semtex!!! Very much appreciated!!!

Question for you. Would you mind telling us what you thought of the quality and ease or difficulty of installing the STILLEN exhaust. We love getting customer feedback and want to make sure that you are satisfied with your purchase.

Thanks! Now get out there and enjoy it!
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Old 03-06-2009, 03:51 PM   #14 (permalink)
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Semtex that sounds very very good! Congratulations!

I dont think you are crazy, there should be a difference in power. Don't get fooled by the sound though; sound makes it feel like you are going faster.
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Old 03-06-2009, 04:02 PM   #15 (permalink)
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Quote:
Originally Posted by Kyle@STILLEN View Post
Thanks for the great feedback and video's Semtex!!! Very much appreciated!!!

Question for you. Would you mind telling us what you thought of the quality and ease or difficulty of installing the STILLEN exhaust. We love getting customer feedback and want to make sure that you are satisfied with your purchase.

Thanks! Now get out there and enjoy it!
Hey Kyle,

I was getting at that too. It must have been easy as there was no mention of it.

BTW, Stillen is great to deal with; very professional and quick follow-up.
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