NISMO and HFCs...
#81
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Originally Posted by WalkerT
I have a 07 with nismo exhaust and it might be different but the rasp does not go away. Really loud for the first 10 minutes or so then sounds better but the rasp only goes away a little. I think the nismo (baffled muffler) just does not flow smooth enough for this much air. I have had these for about three weeks.
Also these are metalic hfc so they are different than the ceramic.
Also these are metalic hfc so they are different than the ceramic.
#82
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^^^you guys LIKE the sound that you get AFTER the 10 mins?? man if anything, its the loudness from the first 10 minutes that make me like it. Too quiet once youve driven it a while.
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Originally Posted by scmtkings4
^^^you guys LIKE the sound that you get AFTER the 10 mins?? man if anything, its the loudness from the first 10 minutes that make me like it. Too quiet once youve driven it a while.
or you like it?
#84
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Hi all, Im sorry to bother anybody but i have had the worst luck on the enthusiasts forums of all 5 imports i have built so i am hesitant to ever open my mouth. I have an 07 with NISMO I/E and i feel like it is too quite. To the extent that i want to trade my nismo exhaust for a greddy/hks set up. However the financial loss would be comparable to buying some of the new Berk HFC's for the vq35hr instead. I was going to order them monday and install them next week since the guy who had my car thought he was a drifter and ruined my tranny (as well as a few other things) and i have to drop it off for warrenty work on sunday. However if there is anything i learned from forums its to do some research first before buying parts (i wish i did more before i night the nismo exhaust) and i stumbled onto this thread. If i am understanding this people have had problems with the nismo exhaust causing the HFC's to crack due to lack of flexing ability. However, it sounded like this can be fixed with brackets which (if i understand right) is something that used to not but but is now included with high flow cats. So my question is this has this problem been adressed by berk yet? it sounded like after reading the 5 thread pages that people with the newer model HFC's have not had problems.
P.S. Preparing to get burned...
P.S. Preparing to get burned...
#86
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Originally Posted by Kaylinpg
So my question is this has this problem been adressed by berk yet? it sounded like after reading the 5 thread pages that people with the newer model HFC's have not had problems.
P.S. Preparing to get burned...
P.S. Preparing to get burned...
No worries about the question - was totally valid and you shouldn't be too concerned about getting flamed (although it does happen too often here).
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Originally Posted by ginobetterfly
are you saying you dont get the rattling, rasping sound when you're on it in the high RPMs?
or you like it?
or you like it?
#92
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Originally Posted by ginobetterfly
i wonder if adding an intake + air duct could help with the rasping.... maybe getting more air IN is the answer... could be totally wrong though..
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Originally Posted by gsingh350Z
IMO, you are wrong. The reason the exhaust is rasping is because the Nismo muffler cannot handle that much airflow. Remember the Nismo is a subtle exhaust, unlike most other farty exhaust systems, it was designed not to be a fart can but yet have some distinct tone. So Nismo had to restrict some airflow (to an extent) by baffling the muffler somewhat. In your case, by adding HFC, the airflow is increased, and the Nismo muffler just can't handle the increased airflow...hence leading to rasp?
#94
anyone hve experience with or heard info about the AAM HFC's or the stillen HFC's they both look decent i wanted Berks at first but my friends cracked after like three weeks and i keep hearingabout cracking issues. Any info on the AAM's or Stillen would really help me out.
#95
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+1 for Berk HFC's w/ mounting bracket. I love mine!
+1 to this too. My Borla sounds so sweet in that range. If you stand behind it, it will rattle your teeth with that deep tone!
Originally Posted by scmtkings4
^^^you guys LIKE the sound that you get AFTER the 10 mins?? man if anything, its the loudness from the first 10 minutes that make me like it. Too quiet once youve driven it a while.
#96
I'm just wondering about the nismo cracking problem and instead of a flex y-pipe wouldn't something like the Ingalls "Stiffy" Engine Torque Damper work better by causing alot less engine flex?