Adjusting The Borla
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Joined: Oct 2007
Posts: 641
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Car: 91 RS
Engine: 350 TPI
Transmission: T5
Axle/Gears: 3.45
Adjusting The Borla
I bought mine with a Borla on it already, its very nice but I have no idea how to adjust it, can anyone fill me in on this? how to make it louder? or quieter? 
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From: Ohio, near columbus
Car: 89 iroc-z
Engine: 305tpi
Transmission: wc-t5
Axle/Gears: 10 bolt 3.08 posi (4 now)
Re: Adjusting The Borla
yah on the passenger side outlet there are 3 different sized restrictor plates. A lot like any other steel exhaust gasket you will see. It's a sandwhiched styled gasket and 3 bolt flange on the passenger side exhaust outlet.
1 restrictor is like 2.5, 2.75 and 3in or something like that i can t remember i just put the fully open restrictor plate in mine and it's still not insanely loud but, my engine is barely modified, they get noisier the more power they make it seems haha.
1 restrictor is like 2.5, 2.75 and 3in or something like that i can t remember i just put the fully open restrictor plate in mine and it's still not insanely loud but, my engine is barely modified, they get noisier the more power they make it seems haha.
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From: Winston salem, NC
Car: 1987 1SICIROC.....1999 TransAm
Engine: 385 HSR.....LS1
Transmission: 700R4 with Midwest 3400 2.4str...M6
Axle/Gears: SLP Zexel Posi unit 3.42's...3.73's
Re: Adjusting The Borla
yeah, on the passenger side there is split in the system. That is where you slide the plates inbetween the connection to give you a different sound. Un bolt slide the plates in and bolt it back together.
heres some pictures of what to look for.
heres some pictures of what to look for.
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