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c6pete
Original Poster
58 posts
46 months
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Having just read Cliff's note on resonators, it got me thinking again about a mod I was planning on doing to the C6. Looking at changing the full exhaust system from the headers through to the blowers, and edging towards the B&B systems, with Fusion blowers. However, the comments against thier X-Pipes and Headers is that it's for off-road use only. Is this only true in the US, or are the restrictions in the UK as to what headers and x-pipes you can put on?
Any thoughts or experience of these changes would be appreciated!
Cheers
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ringram
12,207 posts
117 months
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offroad usually means no cats. or not CARB accredited.
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GW65
525 posts
75 months
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Off-road just means it doesn't conform to noise regulations, etc...so you fit them at your own risk. So, for example, the Borla Touring system was sold for "road use" but the Stingers for "off-road" only...but they're both available either as cat-back or mufflers-only. And of course the Stingers sound much nicer! It's a bit like bike cans that have "not for road use" in vary small print that you can only see if you dismantle the bike 
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C6NL
592 posts
129 months
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If you install headers, cats, and x-pipe you will get a CEL error, 80 percent of the time you can prevent that by installing a set of O2 extenders. ( www.bigdaddiesgarage.com ) Or get a custom tune and get rid of the rear O2 sensor check. Ceramic coating is worth the extra money, under bonnet temps are way lower with the coating, and you don't need spark plug boots. Fred
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c6pete
Original Poster
58 posts
46 months
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Thanks for the advice guys - sounds like it's not just as simple as taking off the existing and bolting on the new (which is how it comes across on most retail and product sites!).
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swerni
19,839 posts
79 months
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You also need to consider if you can live with the volume and potential drone all of the time.
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AdeTuono
3,752 posts
96 months
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swerni said: You also need to consider if you can live with the volume and potential drone all of the time. I used to get that, but it was soon sorted with a divorce.
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swerni
19,839 posts
79 months
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AdeTuono said: swerni said: You also need to consider if you can live with the volume and potential drone all of the time. I used to get that, but it was soon sorted with a divorce. Not sure I want to spend that much 
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C6NL
592 posts
129 months
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swerni said: You also need to consider if you can live with the volume and potential drone all of the time. With a set of bi-mode (ZO6) or NPP mufflers with valves there's no drone with the valves closed. I have a set of Z06 size Kooks ceramic coated headers, cats, and x-pipe combined with a pair of Z06 bi-mode mufflers. With the valves closed the car is only marginally loader than stock, with the valves open it sounds like a nascar racer. Fred
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ian_uk1975
925 posts
71 months
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C6NL said: With a set of bi-mode (ZO6) or NPP mufflers with valves there's no drone with the valves closed. I have a set of Z06 size Kooks ceramic coated headers, cats, and x-pipe combined with a pair of Z06 bi-mode mufflers. With the valves closed the car is only marginally loader than stock, with the valves open it sounds like a nascar racer.
Fred Precisely.
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swerni
19,839 posts
79 months
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C6NL said: swerni said: You also need to consider if you can live with the volume and potential drone all of the time. With a set of bi-mode (ZO6) or NPP mufflers with valves there's no drone with the valves closed. I have a set of Z06 size Kooks ceramic coated headers, cats, and x-pipe combined with a pair of Z06 bi-mode mufflers. With the valves closed the car is only marginally loader than stock, with the valves open it sounds like a nascar racer. Fred Sorry I wasn't thinking in bi- mode
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ZR1cliff
17,768 posts
118 months
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C6NL said: With a set of bi-mode (ZO6) or NPP mufflers with valves there's no drone with the valves closed. I have a set of Z06 size Kooks ceramic coated headers, cats, and x-pipe combined with a pair of Z06 bi-mode mufflers. With the valves closed the car is only marginally loader than stock, with the valves open it sounds like a nascar racer.
Fred Sounds like you've got the best of both worlds. Mine didn't have that option and was too loud to live with, not only for me, but others too. No cats, X pipe and only one box either side equals constant noise. Nice at first, but there are times when you can do without it.
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C6NL
592 posts
129 months
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ZR1cliff said: C6NL said: With a set of bi-mode (ZO6) or NPP mufflers with valves there's no drone with the valves closed. I have a set of Z06 size Kooks ceramic coated headers, cats, and x-pipe combined with a pair of Z06 bi-mode mufflers. With the valves closed the car is only marginally loader than stock, with the valves open it sounds like a nascar racer.
Fred Sounds like you've got the best of both worlds. Mine didn't have that option and was too loud to live with, not only for me, but others too. No cats, X pipe and only one box either side equals constant noise. Nice at first, but there are times when you can do without it. When my girlfriend is in the passenger seat the valves are mostly closed, only when we drive through tunnels I'm allowed to open them During a run on the dyno, in the spring this year the car made 470 bhp and 116 db with the valves open. It's insanely loud above 4000 rpm, loads of fun when you drive through the Italian mountains. http://www.youtube.com/watch?v=sh56cAp55jcFred
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c6pete
Original Poster
58 posts
46 months
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Cheers for the advice guys. Definitely will be going for bi-modal (think the new B&B Fusion set up is), as don't think the neighbours will be too happy with a straight through system firing up at 6:30 on a Monday morning!!
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300bhp/ton
26,483 posts
59 months
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c6pete said: Having just read Cliff's note on resonators, it got me thinking again about a mod I was planning on doing to the C6. Looking at changing the full exhaust system from the headers through to the blowers, and edging towards the B&B systems, with Fusion blowers. However, the comments against thier X-Pipes and Headers is that it's for off-road use only. Is this only true in the US, or are the restrictions in the UK as to what headers and x-pipes you can put on?
Any thoughts or experience of these changes would be appreciated!
Cheers Blowers?? As in superchargers? Off road simply means no CATS. Personally I'd try and sway you towards a H pipe setup if you can find one, the different in HP is minimal in most cases, but IMO H pipe setups sound better than X pipe ones. Don't bother with shorty headers, if you're going to the cost/hassle might as well do it properly and go LTs.
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ian_uk1975
925 posts
71 months
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300bhp/ton said: Don't bother with shorty headers, if you're going to the cost/hassle might as well do it properly and go LTs. Or, if you're on a budget, I happen to have a pair of stock and 'as new' Z06 exhaust manifolds available for a fraction of what LT headers would cost you These will add about 15rwhp over stock C6 manifolds.
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c6pete
Original Poster
58 posts
46 months
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Cheers Ian. Holding off on doing anything in the immediate future, but hopefully next summer, so will drop you a line then to see if you still have them lying around!
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chuntington101
4,039 posts
105 months
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PFADT have just come out with a lovely set of tri y headers for the c6! Deffinately worth a look if you are in the Market for some!
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c6pete
Original Poster
58 posts
46 months
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chuntington101 said: PFADT have just come out with a lovely set of tri y headers for the c6! Deffinately worth a look if you are in the Market for some! Looks like the PFADT system is only for LS3 engines...shame, as looks like a good shout.
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ringram
12,207 posts
117 months
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Strange, I cant see why they wont fit any C6 model. Exhaust ports are in exactly the same place.
Only reason could be body changes in 09+ IMO. Something underneath changed in regards to mounting perhaps etc..
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