GHL Muffler bypass feed back needed
07-11-2004, 02:35 PM
#1
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GHL Muffler bypass feed back needed
GHL's web site is down so please help.
Can I use my factory large oval tips?
Dramatic reduction in lag on my K24's?
Cost?
Noise levels?
Any local bayarea peeps have a set in there gararge they would like to part with today?
Can I use my factory large oval tips?
Dramatic reduction in lag on my K24's?
Cost?
Noise levels?
Any local bayarea peeps have a set in there gararge they would like to part with today?
07-11-2004, 06:36 PM
#2
No single change will give you a "dramatic" reduction in lag. Some things will change lag, bring it on earlier, improve response etc. Redesigning the entire system can produce "dramatic" results and mitigate lag.
The GHL site is up:
http://www.ghlmotorsports.com
And this Google search:
http://www.google.com/search?q=GHL+muffler
... showed other fun sites that (bravely) attempt to discredit various products:
http://www.fabspeed.com/993mufflers.html
I'd like to build a flow-bench and get some numbers on applicable CFM/back-pressure/resonnance etc.
In simple terms, the "muffler bypass" idea is a simple elbow going from the cat cross-over pipe straight out the back of the car (eliminating the dead weight, heat and back-pressure of the factory muffler can) and you're paying for the right dimensions, some nicely done fabrication of the joints and some shiny tips. If you don't want the tips, I'd negotiate with the given maker to get a deal -- it surely saves them on cost of fabrication, but they might not have the option to upset production to build a "one off" and then sell it at a sufficiently discounted price to justify the work and they'd still have to flare or weld on a flange for your preferred tips and maybe run the risk of warranty or quality issues if it all didn't "just work" ... fabrication is not always straightforward in terms of costs.
The GHL site is up:
http://www.ghlmotorsports.com
And this Google search:
http://www.google.com/search?q=GHL+muffler
... showed other fun sites that (bravely) attempt to discredit various products:
http://www.fabspeed.com/993mufflers.html
I'd like to build a flow-bench and get some numbers on applicable CFM/back-pressure/resonnance etc.
In simple terms, the "muffler bypass" idea is a simple elbow going from the cat cross-over pipe straight out the back of the car (eliminating the dead weight, heat and back-pressure of the factory muffler can) and you're paying for the right dimensions, some nicely done fabrication of the joints and some shiny tips. If you don't want the tips, I'd negotiate with the given maker to get a deal -- it surely saves them on cost of fabrication, but they might not have the option to upset production to build a "one off" and then sell it at a sufficiently discounted price to justify the work and they'd still have to flare or weld on a flange for your preferred tips and maybe run the risk of warranty or quality issues if it all didn't "just work" ... fabrication is not always straightforward in terms of costs.
07-13-2004, 01:41 PM
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I believe you can use your factory tips but you might want to double check. I don't know about dramatic reduction but it feels and sounds like spool up is a little quicker ( I have k16's). If you are going to compare against the stock cans, it is MUCH louder. All your neighbors will know when you fire up the car. It took me a litte time to get used to but now I feel it is perfect.
Check with Brian (?) at GHL on price. From time to time he will offer specials to us. I got the bypasses and tips for well under $500 when he had one of their specials.
Check with Brian (?) at GHL on price. From time to time he will offer specials to us. I got the bypasses and tips for well under $500 when he had one of their specials.
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07-20-2004, 11:35 PM
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The one that allows you to retain stock oval tips...
They look like a 90 degree elbow with a flange on each end. Used only 2 days.
