adv. & dis adv. of running straight pipes

[destroyyourmind]

are there any advantages and how bad is it for your motor?

[skrappy]

I live in japan and all we use out here are straight pipes AKA Dart Izumi. It has absolutly no affect what so ever on your motor. If anything it frees up the motor more. A lot of people want a huge straight pipe. If your runnin KA, CA or SR all you need is 2.5 to 3 in exhaust. You have to have back pressure but in answer to your question, NO it wont affect your motor running straight pipes. Just gata remember that it becomes a cop magnet when its louder

[BoostedNismoNJ]

The straight pipes will get the exhaust gases outta the motor faster thus making more air come into the motor making more power

[destroyyourmind]

ight word thanks for the info I wasnt sure if I was gonna run my 240 off straight pipes or put the exhaust back on

[IanS]

A lack of back pressure in a NA motor will decrease torque output without greatly improving horsepower.

[emo_tactical9]

A lack of back pressure in a NA motor will decrease torque output without greatly improving horsepower.

A lack of a muffler on your car will increase noise while greatly decreasing your hearing.

Have fun though.I plan on putting a cut-out on my car when i get it turbo'd.

[skrappy]

Just remember that LOUD PIPES SAVE LIVES

[CMG]

are there any advantages and how bad is it for your motor?

Keep your cats, a straight pipe is worthless on a stock ka.

[CMG]

The straight pipes will get the exhaust gases outta the motor faster thus making more air come into the motor making more power

What are you talking about?

[RCG_Savage]

A lack of back pressure in a NA motor will decrease torque output without greatly improving horsepower.

Exhaust scavenging =/= back pressure.

Quote »"Often confused is the concept of exhaust velocity and its correlation to back pressure. The conjecture is that back pressure creates performance, which is completely backwards. The idea with exhaust velocity in regard to exhaust pipe size and design is that if the pipe is too small or too restrictive the exhaust gases will not move through efficiently enough, only adding pumping losses through back pressure and cutting into combustion pressure and temperature by forcing some spent exhaust gases to stay in the chamber, basically just the opposite of scavenging. On the other hand, a pipe that is too large will not work correctly either, due to the laws of physics and cooling gases: if the pipe is too large the hot gas will cool, causing it to become denser (heavier) and slow down, the system not working efficiently because moving a heavier gas is more difficult than a lighter one."[/quote]Quoted from another forum