need some advice on exhaust

guys please help me out with this, one of my buddies removed his entire exhaust system from the muffler up to the headers, all he has no on the car is the stock headers, no muffler no y pipe, no cataylictic convertor nothing, he says that the engine will be able to breath better now and create a stronger running engine. He has a camaro like mine chevy 350 his is a street car he does not go to the track just messes around on the street expect for his air cleaner wich is K&N his car is stock...is this safe to do? will it harm the engine? he is telling me i should do it on one of my camaros what do you think should i remove my entire exhuast system except for the headers?

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Originally posted by Dark_Knight
is this safe to do? will it harm the engine? he is telling me i should do it on one of my camaros what do you think should i remove my entire exhuast system except for the headers?

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By stock headers do you mean the stock cast exhaust manifolds?

There are others, but 2 drawbacks would be excessive noise tickets
and
headaches from exhaust fumes in the "people compartment".

just stock manifold on this camaro he wants me to do it too...will it make the engine run better is he right about that ?

it will gain a little power without the restrictive exhaust, but its loud...if he doesnt want to buy a new exhaust he should get a $30 cut out..same effect, but only when you want it you unbolt the plate...i know on my LT1 a cut out loses a little low end but gains a little top end...i'd rather have low end just driving around town

If you are looking for a flow-gain, spend the extra money and get a set of high-flow cats and mufflers. Open exhaust is a really easy way to get a ticket. And youll live longer not breathing carbon monoxide.

Short answer . . . NO. There's much more potential for harm to the engine AND the driver (think about CO poisoning). However, I have to ask if this is a serious question. Here's my reason. It seems to be a rather odd question to be coming from a person who belongs to a car club, and owns a 147 mph, street driven Camaro.

Seriously, who's gong to drive a car around on the street with nothing hooked up to the exhaust manifolds?

Have you ever driven a car with open exhaust, especially open manifolds, it's darn loud and not a good loud either, it's kinda of a nasty loud. And like the others said you will have cops following you a few seconds you pull out on the street.
Shoot, my car has duel 3 inch flow masters on it and it drives me nuts driving it around, I wear ear plugs for trips over 15 miles or I will be about deaf at the end of the trip.

73RS, dual flowmasters that make you def after 15 miles and you wear ear plugs? Lol come on I think your exaggerating (sp) a bit because on my truck with a 454 we have dual all the way back flowmasters and I have them right under the cab right after the muffler pointing down before the rear differential and it's not that bad and not even on the highway. Either that or I am def... well I am already a little anyways.

No- i wouldn't do it. It's not safe, and as your friend will find out, unless you re-adjust your air-flow mixture in your carb. your gonna burn valves, or your EFI control will need major adjustment that you may not be able to get.

hey Dark, that would be illegal, very unhealty, and just a downright dumb plan. Real good way to poison yourself, burn your car to the ground, or if you're lucky just bend all the exhaust valves when you shut the car off and all the cold air hits them. A good freeflowing exhaust system appropriately sized to the engine will speed the car up considerably.

Maybe that's why my ears ring ALL the time now. He He He I had header mufflerz' with short turn downs in fron of the rear end. At the end of a long day of drivin' my ears whould Riiiiiiiiiiiiiiiing !!!!!!!!!!!!!:CRY:

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Originally posted by Streets
:LOL::LOL:So ya became the neigborhood "AVON LADY" then Prozzzzzzzz??:p:p:p

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I'm still decidin' betwixt' Fuller Brush N' Watkins.

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Originally posted by Streets
So I guess that Kirby is not an option?? they suck anyway!!

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Yea, I'd rather drug em' er' just brush em' off:)

Don't do it. It sounds like crap and also in some states its illegal, exhaust has to go past the passenger compartment, IE in a truck it can come out behind the cab, in a car behind the rear seats, anything before that is a ticket and makes the car inoperable, The little bit of extra power you get is not worth the CO poisoning, I have had it from an emersion heater that went out but the fuel continued to drip. 4 of us ended up in the emergency room in oxygen tents. Nasty stuff.
Be safe and keep a full exhaust and don't drive with him until he has the same.

thanks guys...henry i only asked this question because i personally have never done it....and here is a update for you guys....last night my buddies car...his transmission started messing up really bad...now it wont shift past 3rd...he cannot go above 35MPH LOL now he has to pay to have someone pull his auto trans and fix it.

Haha that sucks for him... Did he try to get more power out of it trying to make the tranny a turbo and thought that putting a turbo charger inside would make it a turbo? haha, just messing but what are you going to do with the exhaust now?

Noise would be a Bit**..I have a Corvette with side exhaust and thos exit right behind my doors....cross country trips had me dizzy...also, I personally think the cold air sucked in a hot engine direct from the open exhaust, when ya shut it off could harm the engine.......hot parts and cold air don't mix well**) :HMMM:

i have no clue what he is going to do now but the car wont shift passed third....wonder if that had anythign to do with the open exhuast...either way.. i have choose not to do it thanks to him being the ginnie pig LOL

streets he removed the cat when he took off the exhaust do you think that might be whats wrong?

if it had o2 sensors in that head pipe theres your problem.

i will tell himbut he was stuapid and cut it all off with a jig saw LOL

if the o2 sensors arent plugged in and that is the culprit , then the check engine light should have set a code.

i will use the scanner this afternoon his car and see what codes come up, his car is same as mine and my o2 sensors are not that far back on my exhaust, i beleieve mine are up on my headers pretty close to my engine. we shall see happens i will let you guys know

It should have O2 sensors at the manifolds and just behind the cat's, the worst thing that can happin with no exhaust, your running hard one day she getts a little hotter than normal, you shut her off and COLD air gets pulled into the exhaust, bends the valves, you tag a piston or two, total engine distruction. Or your drivin around one day while its raining, you park the car shut her off and suck water from the puddle you just splashed in sucked up into yer exhaust, I have seen both happen.

Otto