C5 Z06 Vs. Bmw M5??
10-19-2005, 03:19 PM
#81
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Originally Posted by MetallicBluews6
2006 Z06 vs V10 M5 would be interesting.
you've gotta be kidding me. sure they both have 500 horse, but the z06 weighs 3132 lbs. while the M5 weighs 4012 lbs.
z06 no contest...
10-19-2005, 03:24 PM
#82
Originally Posted by silver02ss
you've gotta be kidding me. sure they both have 500 horse, but the z06 weighs 3132 lbs. while the M5 weighs 4012 lbs.
z06 no contest...
z06 no contest...
i also agree
10-19-2005, 03:42 PM
#83
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Originally Posted by 300bhp/ton
ok showme ONE modded Fbody that is more relaible, more economical than stock and will no trouble going to the main dealer for a warranty claim, with something like a cylinder head gasket, high oil consumption or broken diff/drive shaft.
And as you know I'm meaning a mod to be a K&n or a CD played.
Swapping parts out lowers reliabilty, as a rule esp on other stock components. Even non directly related parts, like an Fbody 10 bolt. With stock power and stock rubber it's a rare event to break it, add LT's, cat back, lid, tune, pulley, rear end change and some DR's and it's a different story altogether.
And BTW HEADERS increase fuel consumption - more air (better breathing due to lower restriction) means you car would run LEAN so it there for needs extra fuel to be added. Thus less economical.
There are only 2 reason why MPG will be unaffected or slightly imporve.
1. You now make the same power for less effort, so to achieve the same performance as before you don't have to drive as hard. However drive it the same and you'll go faster and burn more fuel.
2. As already stated if the breathing is increased the AF will go lean, the PCM can only correct so far, but if you car is running lean then yes it will appear as better MPG
And as you know I'm meaning a mod to be a K&n or a CD played.
Swapping parts out lowers reliabilty, as a rule esp on other stock components. Even non directly related parts, like an Fbody 10 bolt. With stock power and stock rubber it's a rare event to break it, add LT's, cat back, lid, tune, pulley, rear end change and some DR's and it's a different story altogether.
And BTW HEADERS increase fuel consumption - more air (better breathing due to lower restriction) means you car would run LEAN so it there for needs extra fuel to be added. Thus less economical.
There are only 2 reason why MPG will be unaffected or slightly imporve.
1. You now make the same power for less effort, so to achieve the same performance as before you don't have to drive as hard. However drive it the same and you'll go faster and burn more fuel.
2. As already stated if the breathing is increased the AF will go lean, the PCM can only correct so far, but if you car is running lean then yes it will appear as better MPG
Plenty of dealer contacts. Take a TBI 305 for example, running perfect that choked down 145bhp engine cant beat 14mpg. You increase the efficency of the engine by taking away exhaust restrictions then leaning the tune and adding timing, quite simple really.....results in a slight increase in fuel economy.
10-20-2005, 06:08 PM
#84
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Originally Posted by cantdrv65
I never had a problem getting warranty service on my 99 Z....headers, cam, nitrous(easy to remove)....example cited. Plenty of dealer contacts. .
Plenty of dealer contacts. .
Originally Posted by cantdrv65
Take a TBI 305 for example, running perfect that choked down 145bhp engine cant beat 14mpg. You increase the efficency of the engine by taking away exhaust restrictions then leaning the tune and adding timing, quite simple really.....results in a slight increase in fuel economy.
10-21-2005, 03:39 AM
#85
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Originally Posted by KB99WS6
What would the effect be if you add H/C and CAI to a car and leave the exhaust 100% stock? thats what i am planning on doing on my 01 Z06...
There's some really good info in the external engine forum. The bottom sticky has lots of good info about exhausts.
There's basically two sides to it, exhaust pressure wave (which I find rather complex and beyond average Jo) and flow rate.
The guide is 2.2cfm per 1hp
To much flow will mean excess noise and loss of low rpm torque, to little flow and it will limit the high rpm breathing capabilities of the engine.
What you need to find out is the flow rate of the different components and try and match them as well as you can with your expected bhp level.
The only thing I haven't been able to find numbers for is the degregation rate, I guess this is because there are too many variables.
But the question you need to ask yourself is, if you keep the stock mufflers and loose 5-15rwhp but retain the current noise levels, could youlive with it?
Of course there's no way of knowing how much BHP you'll loose without doing back to back test under controlled conditions.
10-21-2005, 08:29 AM
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I wouldn't switch my catback/mufflers regardless. The stock Z06 catback exhaust actually flows as well as most aftermarket systems. Plus its all titanium so its really light. The restriction is the Headers/y-pipe/stock pup cats. I certainly know I will bottleneck a decent amount of power with keeping the stock headers but I would prefer a stealth setup...at least for now. My question was mostly refering to gas mileage. I am wondering how the H/C would affect gas mileage leaving the stock headers/y-pipe & cats. Like, would I get a lot better ga mileage if I opened up the flow through the manifold with LT's & hi-flo cats after adding H/C, and will the H/C somehow have the effect of really hurting gas mileage keeping the stock manifolds.
10-23-2005, 10:40 PM
#89
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Originally Posted by vtanju
so guys how can i post the videos for the C5 vs M5, need some help here 
racehead@verizon.net
10-24-2005, 06:37 AM
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Originally Posted by KB99WS6
Are you saying you would remove the headers, cam and N20 everytime you took it in for service???...
Dealers really cannot legally deny warranty unless they can attribute a failure directly to an aftermarket part. (I.E. modify exhaust....exhaust warranty void) Of course if you modify the engine via cam, its all up to the individual dealer on the engine, most would probably deny warranty. You wont lose anything keeping the stock Ti exhaust and going to high flow headers/cats....
Originally Posted by KB99WS6
What would the effect be if you add H/C and CAI to a car and leave the exhaust 100% stock? thats what i am planning on doing on my 01 Z06...
