How loud should the DI injectors be? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

armstrom · 03-19-2016, 05:42 PM

I just picked up a certified 2013 BRZ limited today and after I got it home I was sitting in the driveway setting up the radio and other things.. Once I turned off the audio I noticed the ticking from the driver's side footwell was pretty loud. I was expecting the direct injectors to be loud (I used to drive a VW TDI) but this seems a bit more than I was expecting.

Is it simply louder because the BRZ has less sound insulation than less sporty cars? I noticed an occasional "bump" in the idle as well but the RPMS stay fairly consistent.
-Matt

Ultramaroon · 03-19-2016, 06:55 PM

Haha... LOUD like shaking a bucket full of tap hammers. #fuckitbecauseracecar

armstrom · 03-19-2016, 09:17 PM

Quote:

Originally Posted by Ultramaroon

Haha... LOUD like shaking a bucket full of tap hammers. #fuckitbecauseracecar

ok, Just making sure

If I ever get an OFT maybe I'll adjust the direct injection ratio table to avoid using direct injection at idle. That's the only time you really hear it.
-Matt

Ultramaroon · 03-19-2016, 09:37 PM

Quote:

Originally Posted by armstrom

ok, Just making sure

If I ever get an OFT maybe I'll adjust the direct injection ratio table to avoid using direct injection at idle. That's the only time you really hear it.
-Matt

Yeah, but that's where it really shines from an emissions standpoint. The DI kicks in at idle to run a sub-stoichiometric mixture. It's quite an amazing feature.

armstrom · 03-19-2016, 09:39 PM

Yeah, at the expense of sounding like a 30 year old air cooled Porsche at idle 😀

Sent from my XT1095 using Tapatalk

bcj · 03-19-2016, 10:30 PM

It's like the old Ducati dry clutch. You pay extra for the rattle-bang.

Ultramaroon · 03-20-2016, 12:06 AM

Quote:

Originally Posted by bcj

It's like the old Ducati dry clutch. You pay extra for the rattle-bang.

Exactly.

03-19-2016, 05:42 PM	#1
armstrom Senior Member Join Date: Mar 2016 Drives: none Location: nowhere Posts: 225 Thanks: 39 Thanked 124 Times in 67 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	How loud should the DI injectors be? I just picked up a certified 2013 BRZ limited today and after I got it home I was sitting in the driveway setting up the radio and other things.. Once I turned off the audio I noticed the ticking from the driver's side footwell was pretty loud. I was expecting the direct injectors to be loud (I used to drive a VW TDI) but this seems a bit more than I was expecting. Is it simply louder because the BRZ has less sound insulation than less sporty cars? I noticed an occasional "bump" in the idle as well but the RPMS stay fairly consistent. -Matt

03-19-2016, 06:55 PM	#2
Ultramaroon not playing cards Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,395 Thanks: 53,053 Thanked 37,228 Times in 19,308 Posts Mentioned: 1117 Post(s) Tagged: 9 Thread(s)	Haha... LOUD like shaking a bucket full of tap hammers. #fuckitbecauseracecar __________________ service manuals

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03-19-2016, 09:39 PM	#5
armstrom Senior Member Join Date: Mar 2016 Drives: none Location: nowhere Posts: 225 Thanks: 39 Thanked 124 Times in 67 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Yeah, at the expense of sounding like a 30 year old air cooled Porsche at idle 😀 Sent from my XT1095 using Tapatalk

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