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RTFM should be replaced by RTFWiki? They know everything, including backpressure.

Unless you're looking for something scientific, Wiki is your source. Exact sciences, however, are so overcomplicated that you can't use them when you just need to check an equation.
 
Backpressure means your exhaust is too quiet. No backpressure means it's just right.

A smaller exhaust produces more backpressure. A stock muffler produces backpressure due to its design, wherein air is pushed at 90 degree angles from chamber to chamber. A bigger exhaust and straight through muffler produce less backpressure. A catalytic converter produces more backpressure.

Bigger exhaust manifold/headers mean less backpressure... so do big pipes and a big muffler.

But here's where the art of ricey fart-cans meets the science of exhaust flow... Proper exhaust design is finding the balance between too much backpressure and too little flow velocity. Too big an exhaust means that the scavenging effect (where high speed exhaust creates a vacuum that pulls air out the exhaust valves) is less at certain rpms, causing poor performance. Stock exhausts usually don't flow well, but newer exhausts are so well designed that simple exhaust modifications produce very little in terms of absolute gains without any other modifications to the engine.

Do it right, though, and you can often see between 10-30 extra ponies (depending on the size of the engine) from exhaust work alone.
 
On the subject of cars, what causes brakes to squeak, and what can one do to limit or fix the problem? My TL's brakes squeak every so often, ever since I had the brakes changed.

A few TL owners complain that it's the car itself (they get it too), or I've heard that it's the cold air.:dunce:
 
My Golf's brakes squeak occasionally, too - but it never seems to pose a problem. It also never appeared in some sort of recognizable pattern, either.

Our previous car's rear drums, though, used to squeak constantly near the end of it's life. A quick dab of the brakes usually fixed it for a few seconds. The mechanic couldn't find anything wrong with the brakes, though.
 
Reventón;3223327
On the subject of cars, what causes brakes to squeak, and what can one do to limit or fix the problem? My TL's brakes squeak every so often, ever since I had the brakes changed.

A few TL owners complain that it's the car itself (they get it too), or I've heard that it's the cold air.:dunce:

Build up of brake dust, at least that's what the dealer told me about my squeaky brakes. I don't know what you can do to prevent it, mine stop squeaking after they get wet from driving in the rain and snow.
 
Some pads squeak, some don't. I don't pay attention anymore. Unless you luck out on a super-quiet dust-less pad, I don't think there's much you can do except obsessively clean them every day.
 
Just wanted to ask a simple question about computers.....

  • What is the difference between a DDR2, DDR3 and DDR4 RAM? (besides being faster)
  • Are there any advantage of using a newer RAM?
  • If so, would I need to upgrade to a new motherboard? (since my PC has been quite old, I don't think it will support the newer RAM)
  • Is there such thing as a gaming RAM? What is the difference between a gaming RAM and a normal RAM?
  • Can Windows XP32 support 4GB of RAM?

I was thinking of upgrading my dead PC at the end of the year, but I still can't decide which is more worth it. To upgrade my computer or buy a car....... :nervous:
 
DDR2 can run the bus at twice the speed of DDR. Data transfer doubles each time it goes from DDR to DDR2 to DDR3, etc.

You can buy a car for the same price as a computer?
 
DDR2 can run the bus at twice the speed of DDR. Data transfer doubles each time it goes from DDR to DDR2 to DDR3, etc.

You can buy a car for the same price as a computer?
Well I did ask one of my friends about this, and he said I should be better off using DDR2 RAM. He helped out a lot on this really. 👍

As for the price, considering I'm trying to make a gaming PC that would cost a lot of money (around RM2000 or more) the thought that I could get a used car for as little as RM5000 makes me really think twice about repairing and upgrading my old PC. Should I waste my (and my father's) money on repairing a PC that I could play games with, or buy a used car that I could put to good use?
 
Unless you list your past times as playing computer games, drinking red-bull and eating microwave meals all without moving from the same chair, I'd go for the car.
 
Unless you list your past times as playing computer games, drinking red-bull and eating microwave meals all without moving from the same chair, I'd go for the car.
Well the thing is...... (see below)

Your question hath been answered.
Yeah, but that is half the problem. If I get a car I know I could help my parents do some errands or somewhat, but then would the appreciate if I modify the car up like a race car? (like welding a roll cage, bucket seats, safety harness, engine swap, etc.) Add this with my sickening habit of wanting to street race and touge racing, do you really think it is a good idea for me to get a car?

Either I play it safe and get a good computer and play racing simulator games safely at home, or do the real thing on the street and make a name for myself?
Oh why do I even bother asking, I think everyone is going to tell me the same answer.......
 
The real thing on the street is no street racing. You'll by no means make a name on the streets by driving a freagin' car too fast. Street racing is nothing to be proud of, if you want to race, visit a local race track for a day, but please, keep it clean when on the streets, you're only bringing people's lives into danger ;)

Also, why put such effort in a car? Roll cages and engine swaps, now there's a waste of money right there, use your money for your car and education 👍 (Why even buy a car, what about public transport?)

Putting money into cars is a thing you do when you're a guy with too much money and too little to do. Seriously, don't go down there already, put your money into education and your future rather than pointless cars :)
 
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The real thing on the street is no street racing. You'll by no means make a name on the streets by driving a freagin' car too fast. Street racing is nothing to be proud of, if you want to race, visit a local race track for a day, but please, keep it clean when on the streets, you're only bringing people's lives into danger ;)

Also, why put such effort in a car? Roll cages and engine swaps, now there's a waste of money right there, use your money for your car and education 👍 (Why even buy a car, what about public transport?)

Putting money into cars is a thing you do when you're a guy with too much money and too little to do. Seriously, don't go down there already, put your money into education and your future rather than pointless cars :)
I don't know, maybe it is just something that you wouldn't understand. I'm not saying that I'll get recognize by street racing with someone, rather I could improve my driving skill that driving on the street. 👍 Racing on a track could only do so much. Like is there ever a track near your area that is open 24 hours, 365 days a year and where anyone can enter and just start racing?

If I was really desperate I wouldn't mind breaking into a race track in the middle of the night just to get some track time. :) As for spending money on a car is almost natural for a gearhead/petrolhead like me. I wouldn't mind skipping lunch and dinner just so I could save enough money to buy fuel for my car. Yeah, that sounds really sick of me...... :lol: As for my future, I want to become a professional drifter or a race driver. So you still think I have a chance to be like Fredric Aasbø was in Norway? ;)
 
If you have that sickening urge, then you shouldn't be getting a license in the first place.

Do you have a license? The real, actual feeling behind the wheel of a real, actual car was so completely different from video-games that it blew me away. It's completely, very different. As for improving your driving-skills, it depends what skills. Normal, everyday driving skills are only enhanced by normal, everyday driving - managing your position in congested areas, staying in the correct position and keeping yourself and everybody around you safe and sound are the skills you'll need.

As for racing skills, driving on the track will do everything. Next to none of the real race-drivers started out street-racing, and while I realize it costs money - perhaps more than you can afford - it's the only way to go. Street-racing will cost you your license and perhaps your life - and someone else's, perhaps. If you're that desperate for track-time and fuel, it's better to pony up that cash. And breaking into a track? How many hours of NFSU2 have you logged?!

I can't judge your personality over the internet, but it sounds like you should keep yourself away from a car, if illegal racing is what interests you. Get a halfway-decent system, LFS, and a steering-wheel, then knock yourself out. Otherwise, grow up, get a license, and drive like a sensible human being. "Petrolhead" is a guy that enjoys the car and driving, not one that puts lives in danger taking unnecessary risks. A B-road or mountain pass can be lots of fun without racing, without risking, and definitely within the limits.


Oh, and roll cage on your street-car? Do you really want to drive with a helmet all the time? :odd:
 
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I don't know, maybe it is just something that you wouldn't understand. I'm not saying that I'll get recognize by street racing with someone, rather I could improve my driving skill that driving on the street. 👍 Racing on a track could only do so much. Like is there ever a track near your area that is open 24 hours, 365 days a year and where anyone can enter and just start racing?

If I was really desperate I wouldn't mind breaking into a race track in the middle of the night just to get some track time. :) As for spending money on a car is almost natural for a gearhead/petrolhead like me. I wouldn't mind skipping lunch and dinner just so I could save enough money to buy fuel for my car. Yeah, that sounds really sick of me...... :lol: As for my future, I want to become a professional drifter or a race driver. So you still think I have a chance to be like Fredric Aasbø was in Norway? ;)
From this I've come to the conclusion that you should buy neither.

Because if you buy a gaming computer you'll buy a shoot'em up and then think it's fine to go out with an automatic weapon shooting innocent people.
 
Find a sports car club and go autocrossing, but do NOT do that kind of stuff on the street.

Autocrossing will teach you everything you need to know about how the car works, what its limits are, and how it will behave with what sort of inputs. Some of it will surprise you, but it will do so in a parking lot or on an airfield that is empty except for a sea of cones, rather than on a street full of pedestrians, oncoming traffic, storefronts and utility poles. And the things you learn about the car WILL help you in street driving: you'll catch that skid when the rear tire hits a puddle, you'll stop safely when that blind man drives out in front of you from a stop sign, and you'll bring the car back to the road safely when you have to take to the shoulder because an oncoming idiot thought he had room to make a pass, and NONE of those events will even bump your heart rate, because you knew what to expect and were ready for them. (I've experienced all of those events, and had a car full of fellow students returning to campus from a home weekend when the rear broke loose in water. One of my friends asked if we just nearly crashed, and my answer was no.) You'll also be hanging around people who understand driving at the limit, will be willing to teach you everything they know, AND will make sure you understand that such activity has no place on the street.

And drifting is not racing. It's a waste of tire.

And lastly, this is not meant as an insult, but your perception of what it means to drive is obviously completely unrealistic. Reading you describe what it would be like is very much like reading sex described by a 9-year-old who found his daddy's magazines. There's absolutely nothing cool about "racing" in traffic. High speed too much in excess of what's going on around you is just stupid and dangerous. Sliding through a turn doesn't get you any style points or "kudos." It gets cars bent up and it gets people hurt and killed. It does NOT mean you're a better driver. Good drivers go 35 years accident-free, using my own modest self as an example.
 
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I could improve my driving skill that driving on the street. 👍 Racing on a track could only do so much.
Improve your driving skills? How about you start by just driving before you get into racing, never mind the illegal street version. Walk before you run.
Like is there ever a track near your area that is open 24 hours, 365 days a year and where anyone can enter and just start racing?
Why do you need a track open 24/365? They have hours for a reason - to keep safety crews on hand so you don't die.
If I was really desperate I wouldn't mind breaking into a race track in the middle of the night just to get some track time.
Break in to a track? If you're looking for the short road to jail, you've found it.
As for spending money on a car is almost natural for a gearhead/petrolhead like me.
I love cars and driving, too, but I'll be damned if I'm going to spend my hard earned money on horsepower gains just so I can shave a few seconds off of my 10 minutes drive to work.
As for my future, I want to become a professional drifter or a race driver. So you still think I have a chance to be like Fredric Aasbø was in Norway? ;)
I'm not one to try to steer people away from a desired profession, but professional drifter? Seriously? Sure, there are a few that have made it big, but the vast majority wrapped themselves around a light pole years ago. Think you'll honestly still be drifting/racing when you're 65? And don't give me that "I won't need to because I'll have enough money to retire before then" line, 'cause you won't.

If you like cars, go to school for design or engineering. Significantly more rewarding and also significantly less illegal.
 
Street racing? Breaking into a track to get some free practice runs? With that approach, the closest thing to Aasbø you'll get is one of these...
Would the extra "a" stand for asinine?
 
Trackdays are the only place you can actually take your car past 8/10ths safely. With run-off... with no oncoming traffic... and with a tow-truck and safety crew handy.

Buy a car. Learn how to drive. Spend some money on maintenance, tighten all those bolts in the suspension and get the brakes sorted. Then get decent tires and a helmet and go out on track. Assuming you don't bin the car, you'll learn more in one track day than in a month of driving "Initial D" style (or whatever kids do nowadays, when they want to die) on public roads.
 
Well the thing is...... (see below)


Yeah, but that is half the problem. If I get a car I know I could help my parents do some errands or somewhat, but then would the appreciate if I modify the car up like a race car? (like welding a roll cage, bucket seats, safety harness, engine swap, etc.) Add this with my sickening habit of wanting to street race and touge racing, do you really think it is a good idea for me to get a car?
Modifying a car with safety features isn't going to appreciate it the way you might think. Your car's value (whether it's being sold or not) isn't increased by the money you've dumped into it, i.e., it doesn't go up $4,000 just because you added something worth $4K. In fact, mods like a safety cage & bucket seats will more than likely depreciate it the car's value because people will probably not want that in their car. Some of the only real ways to have a car's value go up is to have an older car in prime condition, a rare car no longer made, or have enough mods to actually set the car's value upwards (of which, you still will probably not regain your money spent when it's sold or appraised).

Either I play it safe and get a good computer and play racing simulator games safely at home, or do the real thing on the street and make a name for myself?
Oh why do I even bother asking, I think everyone is going to tell me the same answer.......
Yeah, why would you care about that in the first place? No one cares, esp. not those guys you might beat because they'll just talk trash. If you really want a name on the streets, it's easier to achieve by running from the police constantly than racing, though I highly suggest you do neither.

Think about it. When is the last person you heard on the streets who was known for racing? If you can name one, $20 says he's also known for running from the police as well multiple times.

I don't know, maybe it is just something that you wouldn't understand. I'm not saying that I'll get recognize by street racing with someone, rather I could improve my driving skill that driving on the street. 👍 Racing on a track could only do so much. Like is there ever a track near your area that is open 24 hours, 365 days a year and where anyone can enter and just start racing?
No, but why does it need to be open 24/365? But to answer, your question, yeah, there are tracks like that. Near Dallas, we have Motorsport Ranch & Eagles Canyon Raceway that are open nearly 90% of the year from usually 6-8AM to 5-7PM (due to lack of lights).
 
Reventón;3224755
Modifying a car with safety features isn't going to appreciate it the way you might think. Your car's value (whether it's being sold or not) isn't increased by the money you've dumped into it, i.e., it doesn't go up $4,000 just because you added something worth $4K. In fact, mods like a safety cage & bucket seats will more than likely depreciate it the car's value because people will probably not want that in their car. Some of the only real ways to have a car's value go up is to have an older car in prime condition, a rare car no longer made, or have enough mods to actually set the car's value upwards (of which, you still will probably not regain your money spent when it's sold or appraised).

I don't think he meant the car's resale value - I think he meant that his parents won't like it if he changes anything on the car.
 
I don't think he meant the car's resale value - I think he meant that his parents won't like it if he changes anything on the car.

His insurance company will like it even less.
 
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