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Why Should An Exhaust Be Upgraded?

When I looked into upgrading the exhaust on my car, my original goal was simply to see if it made any difference. Would performance increase or decrease? It’s important to understand that the velocity at which your exhaust exits is one of the key elements to its performance. When your engine is at low RPM, the amount of exhaust gases leaving is low, so the velocity it exits the exhaust is low. You can increase this velocity by using a smaller pipe, but this will create a restriction for higher RPM.

Exhaust scavenging makes an exhaust system more efficient because as your exhaust gases pulse out of the engine (from each exhaust stroke of the engine), you have a high pressure area leading the exhaust pulse, followed by a low pressure area (with a transition). This low pressure area helps to pull the next exhaust pulse out, meaning the piston has less work to do when it’s forcing out the exhaust gases. Ultimately the goal is to have the fastest exhaust velocity with the least amount of restriction (which of course isn’t as simple as writing that sentence).

The whole idea is to increase your exhaust diameter as the amount of exhaust your engine creates increases. This reduces restriction and allows for more flow. If you have modified your engine, you’ll need to modify the exhaust as well to allow for more airflow.

Features of a limited slip differential

1. Traction performance comparable to diff lock

When L. S. D is activated, the left and right wheels are in a direct connection state. “Hiwow LSD”is a revolutionary 4-wheel drive mechanical LSD that demonstrates the optimum locking power for the stage from off road to general roads.

2. Ruu smoothly on road

Since the lock mechanism does not operate up to the set torque value, “Hiwow LSD” can enjoy comfortable driving of the open differential on a road surface with good grip such as asphalt. Moreover, the transition of the lock ⇔ open is extremely smooth.

3. straight runningstability at high speed

Because the frontal projection area is large and the center of gravity is high, the cross-car 4WD car tends to become unstable due to the influence of the crosswind and ruts while driving at high speed. “Hiwow LSD” minimizes the influence of them by locking the rotational difference between the left and right during acceleration.

4. Amazing durability

Special specifications for 4WD, such as increased number of friction plates and high-strength high carbon steel differential case. In addition, the locking operation is combined with smooth operation to achieve amazing durability.

5. Professional off-road racing driver Impressions

When a general mechanical LSD was mounted on the front, steering operability was sacrificed in exchange for traction, so it was not actively mounted. However, while securing overwhelming traction, “Hiwow LSD” has almost no sense of discomfort in the steering operation. The same is true for the rear differential, and even if the steering is largely cut in a place like a parking lot, there is no unpleasant operation noise or a sense of drag unless a rough accelerator work is done. It is appreciated that the so-called “active LSD” and common sense “permanence” in general use is almost gone.

6. Test driving impression

Test vehicle: Land Cruiser 80 4Lo Driving / Conditions: U-turn to a relatively flat moglucose at a sharp angle

A: Front and rear open differential
Even though I took the line correctly, my tires got stuck and stuck. To clear, you have to accelerate and gain momentum.

B: Front and rear “Hiwow LSD”
There is no wrinkle in steering and it clears without being stuck. I drove to stack, but did not reach the stack. I feel as if my arms have risen.

C: Front and rear differential lock
It showed a stable run because it took traction in the whole area, but the steering became extremely heavy, and the target line was not taken, and the turnaround increased.

For more information about Hiwow LSD, please contact: ruby@hiwowsport.com