The comment stayed in Jun Park’s head longer than it should have.
Needs more power.
He had laughed when he first read it.
Then he read it again.
And again.
By the next morning, the joke had become a question.
How much power did his Tiburon actually make?
Jun knew the factory number.
At least, he knew what the brochure had claimed when the car was new.
But brochures did not account for age.
They did not account for kilometres.
They did not account for worn components, imperfect maintenance, different fuel, or power lost through the transmission.
And they definitely did not account for a cold air intake installed in a garage by a nervous beginner with a stripped bolt and a YouTube video paused every thirty seconds.
Jun opened his laptop.
“Hyundai Tiburon dyno results.”
That search led to another.
Then another.
Stock dyno charts.
Modified dyno charts.
Forum arguments.
People claiming enormous gains from simple parts.
Other people claiming every simple part did absolutely nothing.
By midnight, Jun had learned two things.
Nobody online agreed about anything.
And he needed to find out for himself.
Daniel Kim looked amused when Jun brought it up at the next meet.
“You want to put it on a dyno?”
Jun nodded.
“I want a baseline.”
Daniel raised an eyebrow.
“That sounds suspiciously responsible.”
“I’m evolving.”
“Clearly.”
Jun glanced toward his Tiburon.
“I just want to know what I’m starting with.”
Daniel’s smile faded into approval.
“That is exactly what a dyno should be for.”
The following Saturday, Jun arrived at a small performance shop on the edge of the city.
The building looked ordinary from the outside.
Inside, it felt different.
Cars sat on lifts.
Exhaust pipes leaned against walls.
Toolboxes were covered in old racing stickers.
The air smelled like fuel, warm metal, and rubber.
At the centre of the shop sat the dynamometer.
Two large rollers beneath a pair of steel ramps.
Straps.
Fans.
Sensors.
Cables.
Jun stared at it.
The machine looked less like a diagnostic tool and more like an interrogation room for cars.
The tuner introduced himself as Minho Lee.
He was calm, quiet, and almost impossible to impress.
“What modifications?” Minho asked.
“Cold air intake.”
“Anything else?”
“Coilovers.”
Minho looked up from his clipboard.
“That won’t make horsepower.”
“I know.”
“Wheels?”
“Also not horsepower.”
“I know that too.”
Minho nodded.
“Good. We can continue.”
Daniel tried not to laugh.
Before the test, Minho inspected the car.
Oil level.
Coolant.
Tires.
Wheel nuts.
Intake clamps.
Belts.
Hoses.
Jun watched every movement carefully.
“What are you looking for?” he asked.
“Anything that could become a problem under load.”
Jun glanced toward the dyno.
The words under load suddenly sounded threatening.
Minho connected the sensors.
The Tiburon was driven onto the rollers.
Heavy straps secured the car at each corner.
A large fan was positioned in front of the bumper.
Jun stood beside Daniel behind the safety line.
The wheels looked strange resting on the rollers.
Trapped.
Ready.
Minho started the engine.
The familiar idle filled the shop.
Then he brought the car into gear.
The rollers began to turn.
Slowly at first.
Jun felt his shoulders tighten.
The engine climbed through the rev range.
The intake grew louder.
The exhaust note sharpened.
The wheels spun faster.
The entire shop seemed to vibrate.
Jun had heard his car from the driver’s seat hundreds of times.
He had never heard it like this.
From outside.
At full load.
It sounded angrier than he expected.
More serious.
Almost unfamiliar.
The first pull ended.
The rollers slowed.
The shop became quiet again.
Jun exhaled.
He had not realized he was holding his breath.
Minho looked at the screen.
Daniel looked at Jun.
Jun looked at everyone.
“Well?” Jun asked.
Minho did not answer immediately.
He adjusted something on the computer.
Then turned the monitor slightly.
The number appeared.
It was lower than Jun had hoped.
Not catastrophically low.
Not embarrassing.
Just real.
Jun stared.
“That’s it?”
Minho nodded.
“That’s what it made.”
“But the factory rating is higher.”
“At the engine.”
“This is at the wheels.”
“Yes.”
Jun looked at the graph.
The line climbed steadily, then dipped slightly near the top of the rev range.
He tried not to look disappointed.
Daniel noticed.
“What number were you expecting?”
Jun hesitated.
“More.”
“Based on what?”
Jun had no answer.
Minho pointed at the graph.
“The peak number is not the most important thing here.”
Jun frowned.
“Isn’t that the entire point?”
“No.”
Minho traced the curve with one finger.
“Look at the shape.”
The power delivery was smooth through most of the run.
Torque came on predictably.
The air-fuel reading remained safe.
There was no dramatic drop.
No sign of detonation.
No sudden mechanical weakness.
The small dip near the top could have several causes, but nothing suggested immediate danger.
“The engine looks healthy,” Minho said.
Jun looked at the number again.
It no longer seemed quite as bad.
They waited several minutes before the second pull.
Minho checked the intake temperature.
He inspected the straps.
Then the Tiburon screamed across the rollers again.
The second result was almost identical to the first.
A little lower.
Heat had begun to build.
Jun studied both graphs.
“So the intake didn’t add much.”
Minho shrugged.
“Maybe a little. Maybe it changed the response more than the peak. Without a stock run from the same car under the same conditions, nobody can say exactly.”
Jun nodded slowly.
It was not the magical answer he wanted.
But it was honest.
For the third pull, Minho allowed the car to cool longer.
The shop fan pushed air through the radiator and engine bay.
Jun stood in front of the car, watching the headlights.
He thought about the last several months.
The nervous arrival.
The first intake.
The cruise.
The coilovers.
The wheels.
Every change had made the car feel more like his.
But none of those changes had transformed it into something it was not.
It was still a naturally aspirated Tiburon.
Still modest.
Still learning.
Just like him.
The third run produced the best number of the day.
Only slightly better.
But the curve was clean.
Consistent.
Healthy.
Minho printed the graph.
Jun held the paper carefully.
It was not a trophy number.
It was a starting point.
Outside the shop, Jun leaned against the Tiburon.
Daniel stood beside him.
“You disappointed?”
“A little.”
“That’s normal.”
Jun looked down at the dyno sheet.
“I thought it would feel more impressive.”
Daniel nodded toward the road.
“Does the car feel slow when you’re enjoying it?”
Jun thought about the mountain cruise.
The corners.
The intake sound.
The steering after the coilovers.
The grip from the new tires.
“No.”
“Then don’t let one number erase everything else.”
Jun folded the dyno sheet and placed it inside the glove compartment.
“I still want more power.”
Daniel smiled.
“That is also normal.”
“But I don’t want to start throwing random parts at it.”
“That is less normal.”
Jun ignored him.
“I want to understand what actually works.”
Daniel crossed his arms.
“Then you need a plan.”
Back inside the shop, Minho explained the realistic options.
A proper exhaust system could change the sound and slightly improve flow.
Headers might add something, but installation and emissions rules had to be considered.
An ECU tune could improve drivability if supported by the right hardware, but there was no secret software button that would create massive power.
Forced induction could transform the car.
It could also transform the budget, the maintenance, the heat, the fuel demands, and the list of things capable of going wrong.
Jun listened carefully.
“How much power can the engine handle?”
Minho gave him a tired look.
“That is the question everyone asks before asking whether their engine is healthy enough to handle any more than it makes now.”
Jun looked toward his car.
“So what should I do first?”
“Maintenance.”
Jun blinked.
“That’s not very exciting.”
“It becomes exciting when you skip it.”
Minho recommended a compression test before any major power modifications.
Fresh spark plugs.
A close inspection of the ignition system.
Cooling system checks.
Fluids.
Belts.
Hoses.
A proper understanding of the engine’s condition.
Jun had arrived hoping for a horsepower number.
He left with a maintenance list.
That evening, Jun returned to the usual car meet.
People gathered around when they saw the dyno sheet in his hand.
“What did it make?”
Jun told them.
One person nodded.
Another looked unimpressed.
Someone claimed their nearly stock car made far more.
Someone else said the dyno was probably reading low.
Jun listened to the opinions.
For once, they did not bother him.
The number belonged to his car.
Measured honestly.
No excuses.
No fantasy.
A younger driver looked embarrassed on Jun’s behalf.
“Are you going to post it?”
Jun looked at the graph.
“Yeah.”
“Even with that number?”
Jun smiled.
“Especially with that number.”
He uploaded the dyno chart that night.
The caption read:
Baseline established. Now the real build begins.
Some people joked.
Some offered advice.
Several respected the honesty.
Daniel left one comment.
A number means nothing without a plan.
Minho left another.
Do the compression test.
Jun stared at that comment.
Then sighed.
“Everybody’s a comedian.”
The next morning, Jun opened the hood.
The engine bay no longer looked like a collection of parts.
It looked like a system.
One that had to be understood before it could be pushed.
He checked the oil.
Looked over the hoses.
Inspected the intake clamps.
Then noticed something.
A faint residue near one of the ignition components.
Probably nothing.
Maybe not.
Jun leaned closer.
The horsepower chase could wait.
The next lesson had already arrived.
End of Chapter 6
Next: Chapter 7 – The Misfire
