KA24DE w/ APEXI 3" CATBACK

my car with a few bolts ons. nothing special!

Category:

Autos & Vehicles

Tags:

• ka24de
• s13
• apexi
• drift
• JDM

[DreEzed]

Don't get a 3' exhaust if your runin N/A or KA.

When you step on you feel less torque I guess because of the back pressure is gone.

[twofortysx]

FALSE.

[untouchabledriver87]

@twofortysx Yeah, you might gain a few ponies, but you'll be having fun replacing piston rings after they're toast cause of the lack of back pressure. That is if you deleted your cat too. ?? lol

[twofortysx]

@untouchabledriver87 So being that you seem to be an expert on the situation........explain to me why my car, which still retains this exhaust system and was swapped to a dual cam KA with better than average compression numbers in April of 04, is still running almost perfect compression as of June 2010?

[twofortysx]

@untouchabledriver87 So being that you seem to be an expert on the situation........explain to me why my car, which still retains this exhaust system and was swapped to a dual cam KA with better than average compression numbers in April of 04, is still running almost perfect compression as of June 2010?

[pantythiefninja]

holy shit that last second of your video where that SUV shows up looks like one of those videos that simulate the last thing you see before you die it was sweet

[BDucasse21]

@twofortysx DreEzed is right to a certain extent... running a pretty much stock KA24DE or even KA24e will change your torque characteristics... u wont feel it much until about 4000 rpms ... but other than that, a 3" exhaust on a stock KA is not bad... it will push up ur peak hp rpm

[s13240sxkade91]

all i have to say is in a ka motor you have plenty of TQ in fact i think it needs to lose some TQ and gain some HP even if it is N/A

[240sxGuy3]

Why are they giving you shit about your exhaust???WTF isnt it your car?? Anyway nice video, nice car, great sound! They dont know what they are talking about anyway!! Most ka n/a 240sx owners (including myself) put a 3" exhaust on their car and it gives good throttle response, and better torque than stock! And ive never heard of piston rings going out by having a 3" catback!! They dumb as hell! I got a friend with a n/a dodge stealth and hes had a 4" exhaust for the past like 120K an still good!

[untouchabledriver87]

THERE! lol Now I'm done. haha And if you want, let's compare vehicles. I'll more than willingly unbolt the exhaust system and dyno my G/F's stock 200SX, then we'll test it with a performance exhaust. I guarantee it'll have more low end TQ and an overall better powerband. Not to mention, if you go too big on the diameter of pipe, you're actually restricting the exhaust flow due to baffeling. But then again, what do I know? I've only been building track cars for 10 years. lol

[untouchabledriver87]

@240sxRule When a high performance muffler is used, enough backpressure is withstand to eliminate the low pressure environment of the cylinder surrounding the exhaust valve, therefore keeping fuel and air from rushing out of the cylinder during the overlap time between the exhaust and intake valves. It is as simple as this; less fuel in the cylinder means weaker combustion, which ultimately means less power. Low RPM torque on a straight pipe is virtually eliminated too.

[untouchabledriver87]

@240sxRule This is because the area of the combustion chamber surrounding the exhaust valve becomes a low pressure zone once exhaust gases are forced out of the cylinder. As the intake valve opens (and the exhaust valve is open, but in the process of closing), fuel rushes into the cylinder and is attracted to this low pressure portion of the cylinder. Since the exhaust valves have not finished closing, fuel and air exit through the valve and out the exhaust system.

[untouchabledriver87]

@240sxRule P.S. the truth of the matter is that gasoline engines require some degree of backpressure for peak performance and the broadest power curve. This is due to the nature of the internal combustion process. In a straight exhaust system setup, backpressure is nearly eliminated. Therefore, during the exhaust and intake valve overlap, or the time when both valves are open, precious fuel escapes through the exhaust system.

[untouchabledriver87]

@240sxRule A). Your URL is broken. B). I never said open manifold are good. C). I have no clue why I'm arguing on here. It's a mute point. lol And lastly D). Yahoo Answers....Reeeeally??? o_O Either way, if you want to burn as much oil as gas later on down the road... You run those straight pipes! In most cases you lose more power than gain in a N/A application anyway. SOME backpressure = more TQ. There's something for you to google. lol

[untouchabledriver87]

@twofortysx *sigh* Who claimed to be an expert? I'm just saying what I've seen to be the culprit behind shitty valves and fried rings. If it makes you any happier, sure... I'm wrong. End of convo, live your life, and learn. I got sick of replacing rings and valves. Do what you wish. Still didn't answer whether you took the cat out too or not? That was my initial question.