Intake Silencer removal for 2008 - Page 2

aquack · 04-20-2008, 10:46 AM

Guys, I could be wrong b/c I have not started mine yet(maybe tonight). Anyway, I believe there will be performance gains by removing and or modifying this. I did this at the race track in my 1990 Mustang Gt as did a friend of mine when received the tip from someone at the track. We both dropped exactly 3 tents from our times the very nxt run. I believe the result would be even more dramatic in a turbo... Again, I may be offbase here but I am assuming this feeds the airbox? Wouldn't it be beneficial to run a ram air so to speak to this via fabricating a stealth like inlet in the lower front balck louvered cladding? Again, I have not even look into this at all other than reading this post but if I am adding things up correctly then I may pursue this. Please share your thoughts. Thanks.

USNSTI · 04-20-2008, 10:49 AM

Quote:

Originally Posted by aquack

Guys, I could be wrong b/c I have not started mine yet(maybe tonight). Anyway, I believe there will be performance gains by removing and or modifying this. I did this at the race track in my 1990 Mustang Gt as did a friend of mine when received the tip from someone at the track. We both dropped exactly 3 tents from our times the very nxt run. I believe the result would be even more dramatic in a turbo... Again, I may be offbase here but I am assuming this feeds the airbox? Wouldn't it be beneficial to run a ram air so to speak to this via fabricating a stealth like inlet in the lower front balck louvered cladding? Again, I have not even look into this at all other than reading this post but if I am adding things up correctly then I may pursue this. Please share your thoughts. Thanks.

Yeah, you're way off base. Go look at your intake system closely, then come back and post.

rj45 · 04-20-2008, 11:54 AM

Quote:

Originally Posted by USNSTI

Where would the air come in then?

I'm not saying block the airbox inlet.

There's a little round hole in the airbox that leads to the silencer, blocking it should prevent the air (sound waves, rather) from entering the silencer.

USNSTI · 04-20-2008, 11:58 AM

S'poreSTI · 04-20-2008, 12:14 PM

Quote:

Originally Posted by USNSTI

The 08 is a different airbox/silencer design from previous, its now like the legacy. No more silencer in the front wing that can be removed or replaced with an elbow. The silencer is now hanging under the airbox, could be removed or just capped off (duct tape?)

.
JPH did his, reported minimal sound change, so i'm not bothering with mine. Think the sound 'improvement' is much less than earlier models due the the different design & airflow path

aquack · 04-20-2008, 01:19 PM

Thanks for the diagram--very sweet(where did you get it)? Anyway, it doesn't look like I was off base at all.

USNSTI · 04-20-2008, 01:32 PM

Quote:

Originally Posted by aquack

Thanks for the diagram--very sweet(where did you get it)? Anyway, it doesn't look like I was off base at all.

Be sure to post up your time slips / dyno plots of your silencer removal gains.

1day · 04-20-2008, 02:08 PM

FWIW, I had an 08 WRX before I got the STi. I found that the WRX has the same airbox as the STi, but without the sliencer. There was a round lip where the silencer would go, but it was not cut out. I could hear the BOV a lot more on the WRX than on the STi. I just figured it was because the turbo spools up much earlier on the WRX and the BOV was not being drowned out by engine noise due to high rpm's. If you guys really wanted to do away with the silencer and have the hole plugged, then an 08 WRX airbox would be the OEM solution.

NaoNao · 04-20-2008, 06:06 PM

The 08 STI intake is more similar to the Legacy intake design like someone already mentioned, rather than the 06-07 STI's.

Check out this other thread:
08 STi intake silencer delete? How?

Pretty simple, took like 20 mins, didn't have to remove the bumper or anything like that. I don't notice any performance gains or loss. As far as sound goes, you can hear the bov and the turbo spooling a bit more.

midnit · 04-20-2008, 06:40 PM

Quote:

Originally Posted by NaoNao

The 08 STI intake is more similar to the Legacy intake design like someone already mentioned, rather than the 06-07 STI's.

Check out this other thread:
08 STi intake silencer delete? How?

Pretty simple, took like 20 mins, didn't have to remove the bumper or anything like that. I don't notice any performance gains or loss. As far as sound goes, you can hear the bov and the turbo spooling a bit more.

Awesome link sir!

Giant · 04-20-2008, 07:18 PM

Quote:

Originally Posted by NaoNao

The 08 STI intake is more similar to the Legacy intake design like someone already mentioned, rather than the 06-07 STI's.

Check out this other thread:
08 STi intake silencer delete? How?

Pretty simple, took like 20 mins, didn't have to remove the bumper or anything like that. I don't notice any performance gains or loss. As far as sound goes, you can hear the bov and the turbo spooling a bit more.

Nao Nao,Great link, that's just what I started the thread for...Mission complete!!!!!

Thanks!

aquack · 04-21-2008, 05:21 AM

does everyone agree that the wrx version would bolt up and provide the desired result??

suby555 · 04-21-2008, 08:30 AM

I did remove my silencer and you definetly get a little bit more sound.
More Performance... i dont know

It's possible maybe, because the air can go directly and smooth to the filter element and don't have to swirl in to the silencer

Wales Garage · 04-21-2008, 03:13 PM

after the test pics for the wheels, my hacked intake from my LGT goes in with the K&N. i payed alot of money for a turbo im gonna hear it.

**Turninconcepts.com** · 04-21-2008, 05:43 PM

I took the silencer off the other day when installing my Kartboy crank pulley. Drove the car afterwards and noticed very little difference in sound. Not expecting anything in terms of performance. I put it back in shortly after.

Tony

04-20-2008, 10:46 AM	#16
aquack Amateur STI Driver Car: 08 red S.T.I Fav Mod: Coming Soon Posts: 38 Join Date: Mar 2008 Trader Rating: (0)	Re: Intake Silencer removal for 2008 Guys, I could be wrong b/c I have not started mine yet(maybe tonight). Anyway, I believe there will be performance gains by removing and or modifying this. I did this at the race track in my 1990 Mustang Gt as did a friend of mine when received the tip from someone at the track. We both dropped exactly 3 tents from our times the very nxt run. I believe the result would be even more dramatic in a turbo... Again, I may be offbase here but I am assuming this feeds the airbox? Wouldn't it be beneficial to run a ram air so to speak to this via fabricating a stealth like inlet in the lower front balck louvered cladding? Again, I have not even look into this at all other than reading this post but if I am adding things up correctly then I may pursue this. Please share your thoughts. Thanks. This ad is not endorsed by this member. Please register or login to hide this ad.

04-20-2008, 11:58 AM	#19
USNSTI Silver Member Car: OBP 07 STi Fav Mod: Ring-Shaped Reinforcement Frame Location: San Diego Posts: 1,114 Join Date: Dec 2006 Trader Rating: (6)	Re: Intake Silencer removal for 2008

04-20-2008, 01:19 PM	#21
aquack Amateur STI Driver Car: 08 red S.T.I Fav Mod: Coming Soon Posts: 38 Join Date: Mar 2008 Trader Rating: (0)	Re: Intake Silencer removal for 2008 Thanks for the diagram--very sweet(where did you get it)? Anyway, it doesn't look like I was off base at all.

04-20-2008, 02:08 PM	#23
1day Junior STI Driver Car: 2008 DMG STi Fav Mod: Coming Soon Posts: 118 Join Date: Dec 2007 Trader Rating: (0)	Re: Intake Silencer removal for 2008 FWIW, I had an 08 WRX before I got the STi. I found that the WRX has the same airbox as the STi, but without the sliencer. There was a round lip where the silencer would go, but it was not cut out. I could hear the BOV a lot more on the WRX than on the STi. I just figured it was because the turbo spools up much earlier on the WRX and the BOV was not being drowned out by engine noise due to high rpm's. If you guys really wanted to do away with the silencer and have the hole plugged, then an 08 WRX airbox would be the OEM solution.

04-20-2008, 06:06 PM	#24
NaoNao Silver Member Car: 08 OBP STI Fav Mod: APv2 Stg2 93 Location: San Antonio, TX Posts: 45 Join Date: Jan 2008 Trader Rating: (0)	Re: Intake Silencer removal for 2008 The 08 STI intake is more similar to the Legacy intake design like someone already mentioned, rather than the 06-07 STI's. Check out this other thread: 08 STi intake silencer delete? How? Pretty simple, took like 20 mins, didn't have to remove the bumper or anything like that. I don't notice any performance gains or loss. As far as sound goes, you can hear the bov and the turbo spooling a bit more. Last edited by NaoNao : 04-20-2008 at 06:12 PM.

04-21-2008, 05:21 AM	#27
aquack Amateur STI Driver Car: 08 red S.T.I Fav Mod: Coming Soon Posts: 38 Join Date: Mar 2008 Trader Rating: (0)	Re: Intake Silencer removal for 2008 does everyone agree that the wrx version would bolt up and provide the desired result??

04-21-2008, 08:30 AM	#28
suby555 Junior STI Driver Car: Pure white MY08 STI Fav Mod: Coming Soon Location: Belgium Posts: 57 Join Date: Oct 2007 Trader Rating: (0)	Re: Intake Silencer removal for 2008 I did remove my silencer and you definetly get a little bit more sound. More Performance... i dont know It's possible maybe, because the air can go directly and smooth to the filter element and don't have to swirl in to the silencer

04-21-2008, 03:13 PM	#29
Wales Garage Junior STI Driver Car: 08 OBP STi Fav Mod: Boobies........oh, for a car Boost Location: Hunting DrewBears<3 Posts: 120 Join Date: Nov 2007 Trader Rating: (0)	Re: Intake Silencer removal for 2008 after the test pics for the wheels, my hacked intake from my LGT goes in with the K&N. i payed alot of money for a turbo im gonna hear it.

04-21-2008, 05:43 PM	#30
Turninconcepts.com Authorized Vendor Posts: 4,400 Join Date: Jul 2003 Trader Rating: (48)	Re: Intake Silencer removal for 2008 I took the silencer off the other day when installing my Kartboy crank pulley. Drove the car afterwards and noticed very little difference in sound. Not expecting anything in terms of performance. I put it back in shortly after. Tony This ad is not endorsed by this member. Please register or login to hide this ad.