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Aftermarket mufflers and boost gauge installs

 
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bureau13  



Joined: 07 Sep 2017
Posts: 179
Location: South Florida

PostPosted: Sat Oct 28, 2017 1:44 am    Post subject: Aftermarket mufflers and boost gauge installs Reply with quote

A couple questions....first, where do you guys plumb your boost gauges into? Is there a generally preferred place to do that? And is there an existing path through the firewall that I can get to easily (I'm mounting the gauge in the center speaker location).

Also, my car sounds like it has an exhaust leak. The tailpipe itself is missing, but I don't think that has much to do with the sound...I suspect the muffler has deteriorated. I don't mind the loud, but if there's an opportunity to replace it with something that might sound better as well as providing better flow, I'm all for it. I have a Borla on my 928 which sounds great, but I saw a video comparing a Borla and a Magnaflow on 4 cylinder VWs (recent though, like Golfs, which I realize sound very different) and the Magnaflow was amazing. Anyone do this? Any real benefit beyond sound?

Thanks
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1982 931
1986.5 Silver 928S
2007 Hummer H3 (Daily Driver)

Past lives (I miss them all):
2004 RX-8 (Wrecked)
1993 RX-7 (Sold)
1987 RX-7 Turbo II (Sold)
1985 RX-7 GSL (Stolen)
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Garagenut  



Joined: 09 Jun 2019
Posts: 5
Location: Logan, ohio 43138

PostPosted: Fri Aug 23, 2019 8:15 am    Post subject: Reply with quote

I too am looking for a better and louder sound than the borla.... Did you get any info that you can share?
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Red '87 924s cherry (almost), love it!
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924RACR  



Joined: 29 Jul 2001
Posts: 8198
Location: Royal Oak, MI, USA

PostPosted: Fri Aug 23, 2019 10:25 pm    Post subject: Reply with quote

I've plumbed my boost gauge teed into one of the small ports by the throttle body (downstream of the throttle plate of course). There's a port in the firewall behind the cold start valve/intake, which I used. Had to put a short piece of brake line through there to carry the vac signal, otherwise a flexible hose would get pinched.

Haven't had capacity to change out my exhaust yet, but I plan to put a Dynomax on there when I have time... busy building an NA race motor at the moment...
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Vaughan Scott
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'79 924 #77 ITB racecar
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