Invidia N1 + Invidia catless front pipe question - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Jfheisenberg · 12-15-2015, 10:01 PM

Recently, i got installed the invidia N1 and pair it with my invidia catless front pipe. This combinations produces a nice rumble when letting off the gas, when downshift, and occasionally during accelerations.. i think it sounds great.

My questions, how is that rumble produced? Is it coming just from the catback or does the engine plays part on it?

Reason i ask is because to my understanding, the "subaru rumble" sound is produced by UEL headers, and the stock header in the BRZ is equal length.

What do you guys think?

mizzta21 · 12-16-2015, 04:17 AM

Less cats/resonators to negate the sound I guess...

mizzta21 · 12-16-2015, 04:19 AM

Quote:

Originally Posted by Jfheisenberg

Recently, i got installed the invidia N1 and pair it with my invidia catless front pipe. This combinations produces a nice rumble when letting off the gas, when downshift, and occasionally during accelerations.. i think it sounds great.

My questions, how is that rumble produced? Is it coming just from the catback or does the engine plays part on it?

Reason i ask is because to my understanding, the "subaru rumble" sound is produced by UEL headers, and the stock header in the BRZ is equal length.

What do you guys think?

by the way, do u feel a difference in throttle response or power with a catless frontpipe? Is the torque dip minimized?

Jfheisenberg · 12-16-2015, 07:28 AM

Quote:

Originally Posted by mizzta21

by the way, do u feel a difference in throttle response or power with a catless frontpipe? Is the torque dip minimized?

torque dip is still there... the gains are on the top ends rpms i believe..

12-15-2015, 10:01 PM	#1
Jfheisenberg Senior Member Join Date: Jan 2015 Drives: 2015 BRZ Series Blue WRB Location: North Jersey Posts: 830 Thanks: 371 Thanked 204 Times in 156 Posts Mentioned: 2 Post(s) Tagged: 1 Thread(s)	Invidia N1 + Invidia catless front pipe question Recently, i got installed the invidia N1 and pair it with my invidia catless front pipe. This combinations produces a nice rumble when letting off the gas, when downshift, and occasionally during accelerations.. i think it sounds great. My questions, how is that rumble produced? Is it coming just from the catback or does the engine plays part on it? Reason i ask is because to my understanding, the "subaru rumble" sound is produced by UEL headers, and the stock header in the BRZ is equal length. What do you guys think?

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12-16-2015, 04:17 AM	#2
mizzta21 Senior Member Join Date: Jul 2014 Drives: 2014 whiteout, scion fr-s Location: San Jose Posts: 282 Thanks: 504 Thanked 127 Times in 72 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	Less cats/resonators to negate the sound I guess...

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