Engine sound past 4k rpm - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

rainmonkey · 05-23-2014, 01:29 AM

Hello,

I didn't really know how to look up this question, all my searches came up kinda blank so here it goes:

I noticed that when the engine revs past 4k rpm, the sound it makes changes, I feel like it is distinctly 'higher'. It reminds me of Honda's vtec but not nearly as pronounced.

I have Perrin's tune, a Perrin Catback, and a Perrin intake - wondering if it has anything to do with this. Since in one of the emails they sent me, it mentioned adding degrees of timing.

Any ideas? I don't really remember what the car sounded like when it was stock...

Thanks!

YMAA · 05-23-2014, 01:53 AM

It's most likely the more aggressive VVT mapping used by tuners to combat the torque dip. I'm not a huge fan of the raspy noise it adds personally but until I get headers and a new tune I'm putting up with it.

JOSEC · 05-23-2014, 01:54 AM

I have the stock tune and perrin intake, inlet hose, overpipe, front pipe, and catback. Just took my car for a spirited driving session, and it sounds like the way you describe. I guess it's normal.

Amir Ghadiri · 05-23-2014, 03:12 AM

It's just vtec kicking in yo'

All jokes aside I don't think you have anything to worry about

gabeg86 · 05-23-2014, 05:01 AM

Yeah I'm tuned too with an aftermarket intake and past 4k the intake sound is pretty loud. It's just the tune. Completely normal

Sent from my HTC One using Tapatalk

J_kennington · 05-23-2014, 09:18 AM

Even on a stock car, the sound changes. It's simply VVT. In all honesty, it's the same concept of vtec, just goes about it a different route

wparsons · 05-23-2014, 09:58 AM

On my car the sound is definitely more pronounced with the tune, but it definitely made it stock too.

radroach · 05-23-2014, 10:22 AM

With the perrin intake you're definitely going to notice the sound change on a tune with aggressive VVT.

FR-S Matt · 05-23-2014, 10:29 AM

The Perrin CAI itself is really loud at 4k RPM. Don't forget with that you removed every resonator that the stock intake had. It's definitely loud and perfectly normal.

Sportsguy83 · 05-23-2014, 10:31 AM

No but for REAL, it IS the V-TEC kicking in....

I have it set at 4200 RPMs.

FR-S Matt · 05-23-2014, 10:33 AM

Quote:

Originally Posted by Sportsguy83

No but for REAL, it IS the V-TEC kicking in....

I have it set at 4200 RPMs.

When did V-TEC become a turbo? Sign me up! 'yo

Sportsguy83 · 05-23-2014, 10:34 AM

Quote:

Originally Posted by FR-S Matt

When did V-TEC become a turbo? Sign me up! 'yo

ramiram1984 · 05-23-2014, 03:52 PM

it's normal.

wtrxprs007 · 05-24-2014, 09:51 PM

Quote:

Originally Posted by ramiram1984

it's normal.

VTEC Sticker on the engine. Definitely gonna get 500 extra kW from that! 'Yo

05-23-2014, 01:29 AM	#1
rainmonkey Senior Member Join Date: Aug 2012 Drives: BRZ - Dark Grey Location: MA Posts: 298 Thanks: 7 Thanked 35 Times in 24 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Engine sound past 4k rpm Hello, I didn't really know how to look up this question, all my searches came up kinda blank so here it goes: I noticed that when the engine revs past 4k rpm, the sound it makes changes, I feel like it is distinctly 'higher'. It reminds me of Honda's vtec but not nearly as pronounced. I have Perrin's tune, a Perrin Catback, and a Perrin intake - wondering if it has anything to do with this. Since in one of the emails they sent me, it mentioned adding degrees of timing. Any ideas? I don't really remember what the car sounded like when it was stock... Thanks!

05-23-2014, 05:01 AM	#5
gabeg86 Senior Member Join Date: Jun 2012 Drives: 2013 Raven FR-S Location: Albuquerque, NM Posts: 324 Thanks: 139 Thanked 81 Times in 55 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Yeah I'm tuned too with an aftermarket intake and past 4k the intake sound is pretty loud. It's just the tune. Completely normal Sent from my HTC One using Tapatalk __________________ Perrin (LWCP) - Blox (shift knob) - HID Powerhouse (LED's and HID's) - Eibach (sportlines) - Muteki (lugs) - SPL (LCA's) - Rays Engineering (57dr's) - Dunlop Direzza ZII (tires) - Greddy (Evo3) - Full Race (turbo kit) - Ecutek (tuned)

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05-23-2014, 01:54 AM	#3
JOSEC Member Join Date: Dec 2013 Drives: 2014 Subaru BRZ WRB Location: Houston TX. Daytona Beach FL. Posts: 75 Thanks: 15 Thanked 38 Times in 28 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I have the stock tune and perrin intake, inlet hose, overpipe, front pipe, and catback. Just took my car for a spirited driving session, and it sounds like the way you describe. I guess it's normal.

05-23-2014, 10:22 AM	#8
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	With the perrin intake you're definitely going to notice the sound change on a tune with aggressive VVT.

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