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The GrimmSpeed Intake System


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http://images.tapatalk-cdn.com/15/10/20/9dcf16feedb5fb7813e99643da6b817e.jpg

 

 

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If you don't want to drop the ridiculous cheddar needed for IAG caps, take all those yellow caps off, degrease them, and spray paint them silver. I did that, and it looks much cleaner. Not ricey at all, and I was worried about that.

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I even did the dipstick top.

 

So....

power steering

clutch master cylinder

brake master cylinder

oil cap

dipstick handle

washer fluid reservoir cap

coolant overflow tank cap

 

I have a picture in the WDYDT 4th gen thread somewhere

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If you don't want to drop the ridiculous cheddar needed for IAG caps, take all those yellow caps off, degrease them, and spray paint them silver. I did that, and it looks much cleaner. Not ricey at all, and I was worried about that.

 

I didn't even realize IAG made replacement caps for everything. I always thought to myself that someone should tho. But yeah for a total of $350 thats not happening haha.

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Had my car retuned today with the Grimmspeed Intake, Grimmspeed 3 Port Post Controller and DW 65C Fuel Pump. Previous mods are ERZ Catted Downpipe, SPT Downpipe and Turbosmart Kompact BPV.

 

https://dl.dropboxusercontent.com/u/81407078/Chris%20LGT%20Spec%20B%20GS%20Intake.pdf

 

http://i1375.photobucket.com/albums/ag459/christobal65/Legacy%20Stuff/IMG_20151023_135548_zpsx2l5jwxp.jpg

 

[ame=http://www.youtube.com/watch?v=vbkX5gQJz-o]08 Legacy spec.B Dyno run - YouTube[/ame]

2003 Baja 5MT

2016 Outback 2.5i Premium w/Eyesight

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Fitted mine yesterday. Out driving in traffic to see how it feels. Can't really drive on boost with it as its lumpy and hesitates. No knock but just too much of a change from the KSTech it seems. Need to try get hold of my tuner. If I had to ask him to send me a remote tune to help things run a bit smoother what should I ask him to do? I see guys mention 12% increase to maf scaling but i presume that's from the stock setup

http://i32.photobucket.com/albums/d3/desperatedano/Mobile%20Uploads/IMG_20151023_175613.jpg

http://i32.photobucket.com/albums/d3/desperatedano/Mobile%20Uploads/IMG_20151023_175954.jpg

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Is anyone hearing flutter like this?

The Grimmspeed WRX has a stock VF52 and stock BPV.

 

On phone so hard to hear but is the flutter on throttle lift? I def have that w/ a GFB Respons BOV, set to its lightest spring preload. I also get a flutter during spool bn 3k-4k which smooths out after 4k. I've read it's normal w/ the GS EBCS, or it's surge. Boost isn't overly aggressive during spool but is set w/ target 19.5 at 3k and 19.7 bn 3.2k-4k, tapering to 15.6 by 6.8k. Not sure if it's influenced by the GS CAI or has always been there but not audible until installing the GS CAI.

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On phone so hard to hear but is the flutter on throttle lift? I def have that w/ a GFB Respons BOV, set to its lightest spring preload. I also get a flutter during spool bn 3k-4k which smooths out after 4k. I've read it's normal w/ the GS EBCS, or it's surge. Boost isn't overly aggressive during spool but is set w/ target 19.5 at 3k and 19.7 bn 3.2k-4k, tapering to 15.6 by 6.8k. Not sure if it's influenced by the GS CAI or has always been there but not audible until installing the GS CAI.

 

The OEM EBCS does the same thing.

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Is anyone hearing flutter like this?

The Grimmspeed WRX has a stock VF52 and stock BPV.

 

On phone so hard to hear but is the flutter on throttle lift? I def have that w/ a GFB Respons BOV, set to its lightest spring preload. I also get a flutter during spool bn 3k-4k which smooths out after 4k. I've read it's normal w/ the GS EBCS, or it's surge. Boost isn't overly aggressive during spool but is set w/ target 19.5 at 3k and 19.7 bn 3.2k-4k, tapering to 15.6 by 6.8k. Not sure if it's influenced by the GS CAI or has always been there but not audible until installing the GS CAI.

 

The OEM EBCS does the same thing.

 

I get flutter too in that same RPM range. AEM CAI, OEM BCS. Video here:

 

Is this the same sound you guys are hearing?

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The sound you have in your videos is waste gate flutter which is normal with the 3-port ebcs.

Here's a good video showing the waste gate actuator fluttering.

 

The sound I was trying to convey in the Grimmspeed video is compressor surge during throttle lift.

 

 

Sent from my iPhone using Tapatalk

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The sound you have in your videos is waste gate flutter which is normal with the 3-port ebcs.

Here's a good video showing the waste gate actuator fluttering.

 

The sound I was trying to convey in the Grimmspeed video is compressor surge during throttle lift.

 

 

Sent from my iPhone using Tapatalk

 

Ahh, got it. Really, I got it :) :/. But like I mentioned elsewhere, not sure if this is being contributed to by the GS CAI or if it was always present but simply not audible until I installed the CAI.

 

http://youtu.be/0Cjj680Xqio

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Ahh, got it. Really, I got it :) :/. But like I mentioned elsewhere, not sure if this is being contributed to by the GS CAI or if it was always present but simply not audible until I installed the CAI.

 

http://youtu.be/0Cjj680Xqio

 

Yup you sure do got it. Likely you always had it cause of the GFB and now you just hear it more cause of the intake.

What I can't figure out is how Grimmspeed got it with the stock BPV. I have the stock BPV and I definitely don't got it.

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The sound you have in your videos is waste gate flutter which is normal with the 3-port ebcs.

Here's a good video showing the waste gate actuator fluttering.

 

The sound I was trying to convey in the Grimmspeed video is compressor surge during throttle lift.

 

 

Sent from my iPhone using Tapatalk

 

Thanks for the video. That is pretty much what i figured was going on.

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The surge/flutter happens much less so when rapidly snapping the throttle closed like w/ aggressive shifting, but I don't like it happening when say doing a boosted pass and then easing off the throttle from a boosted condition. I'm considering trying another valve but am not really in a position to be spending the $. Any alternative would need to be able to run VTA as I'm currently kinda stuck w/ that configuration (long story). Can't use my old Turbosmart Kompact bc by design it's slightly open under certain vacuum conditions which causes typical idle/driveability issues associated w/ a vacuum leak.
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I wouldn't worry about it that much. True compressor surge is what will damage a turbocharger.

 

I ran one of my turbo Hondas without a BOV at all for about a month while waiting on parts to come so I could install a BOV. That GT2560r was well used when I bought it, and took a hell of a lot abuse well after I sold the car.

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