Gran Turismo 2 A-Spec Mod Setups

[agungdm]

🔧 Guide No. 7
JGTC GT500 ’99 Version Gear Management
(Gran Turismo 2 A-Spec Mod)

📌 GT500 ’99 Technical Context (READ THIS FIRST)

Cars covered:
NSX GT500 ’99 — NA, MR
Supra GT500 ’99 — Turbo, FR
Skyline R34 GT500 ’99 — Turbo, FR

Common characteristics:
Power: ~460–500 hp
Weight: ~2425 lb
Downforce: Medium
Powerband: Narrow
Design goal: Acceleration + stability, not top speed

➡️ GT500 is NOT an endurance prototype
➡️ RPM drop = cardinal sin

🔥 Key Summary (GT500 Edition)
Default Gear 23 = WRONG CONTEXT
GT500 cars live on RPM
Gearing too long = dead car
Gearing too short = tire abuse & instability

➡️ GT500 sweet spot: 16–18
If you’re using 21+ and thinking
“This car feels stupid”
→ It’s not the car. Your gears are too long.
🔍 Realistic Gear Management Range (GT500 ONLY)

1️⃣ Highly Technical Tracks
Tight, bumpy, stop-and-go
Examples:
Trial Mountain
Deep Forest
Laguna Seca
Rome Full
Midfield Raceway
Grand Valley Speedway (Full)
➡️ Recommended Gear: 16–17

Why:
Corner exits dominate lap time
RPM must stay in the powerband
Top speed rarely exceeds 260 km/h
Perfect for GT2’s “dirty” tracks

🧠 Notes:
NSX → 17 is the safest
Supra / R34 → 16–17 depending on throttle discipline

2️⃣ Mixed Tracks
Straights exist, but still technical
Examples:
Special Stage Route 5
SSR11
Seattle Short
Autumn Ring
Grand Valley East
➡️ Recommended Gear: 17–18

Why:
Acceleration still critical
Straights allow 280–300 km/h
18 is the upper practical limit for GT500
➡️ 18 = MAXIMUM SANE VALUE

3️⃣ Fast Tracks (Semi High-Speed)
Examples:
SSR5 Club
Red Rock Valley
Rome Night
➡️ Recommended Gear: 18–19

⚠️ Use 19 ONLY if:
Long straights dominate
Tires are still healthy
You need breathing room up top
If 19 kills corner exit → go back to 18.
GT500 engines do not have torque to hide gearing mistakes.

4️⃣ High-Speed Tracks (Rare for GT500)
Examples:
Test Course
High Speed Ring Reverse
➡️ Recommended Gear: 20–21 (situational)

⚠️ This is NOT normal racing.
This is for:
Slipstream abuse
Top-speed events
Weird GT2 scenarios

❌ Gear 22–30
➡️ TRASH. DELETE. IGNORE.
Not relevant for:
JGTC
GT500
GT2 circuits
Real racing

If someone argues:
“But top speed is higher”
Answer:
Lap time is slower. End of discussion.

📊 GT500 ’99 Gear Summary
Track Type
Gear
Technical
16–17
Mixed
17–18
Fast
18–19
High-Speed
20–21 (rare)

➡️ Most races are won at 17–18
🧠 Final Takeaway (No Sugarcoating)
Guide No. 8 For GT500:
Narrow the range
Prioritize RPM, not top speed
If you naturally cap out at gear 18 →
👉 that means your setup logic is healthy and correct.

 

[agungdm]

Guide No. 8 JGTC GT300 ’99
(Gran Turismo 2 – Hardcore / Competitive Play)

Gear manajement guide

📌 Technical Context (Read This First)
Cars covered (GT300 ’99 examples):
Momo Corse (~330 hp)
RX-7 RE Amemiya (~330 hp)
RX-7 Okura (~295 hp)
Daishin Silvia S15 (~345 hp)

Common characteristics:
Power: 290–350 hp
Weight: 2300–2500 lb
Moderate downforce
Narrow powerband
Low torque compared to GT500

➡️ GT300 cars do NOT win with top speed
➡️ They win with RPM continuity and corner exit
RPM drop = race over.

🔥 Key Summary (GT300 Edition)
Factory default gear (15) = too long
Long gears kill acceleration and duel capability
Short gears keep the engine alive and responsive

➡️ GT300 sweet spot: Gear 11–13
If your car feels “slow” at gear 12 —
it’s not the car, it’s your right foot.
🔍 Universal Gear Range — GT300 ’99

1️⃣ Highly Technical / Bumpy Tracks
Tight corners, elevation, constant exits
Examples:
Trial Mountain
Deep Forest Raceway
Midfield Raceway
Laguna Seca
Rome Full Circuit
Grand Valley Speedway (Full)
➡️ Recommended Gear: 11–12

Why:
Frequent corner exits
RPM must stay in powerband
Top speed rarely exceeds 240–260 km/h
Best for wheel-to-wheel combat
➡️ Gear 12 = default race weapon

2️⃣ Mixed Tracks
Medium straights + technical sections
Examples:
Special Stage Route 5
SSR11
Seattle Circuit
Autumn Ring
Grand Valley East
➡️ Recommended Gear: 12–13

Why:
Still exit-focused
Slightly longer straights (270–290 km/h)
Gear 13 is the upper practical limit
⚠️ If gear 13 kills exit speed → go back to 12.

3️⃣ Fast Tracks (Situational)
Not ideal for GT300, but sometimes required
Examples:
Red Rock Valley
Rome Night
➡️ Recommended Gear: 13–14

⚠️ Use only if:
Track has long uninterrupted straights
Tyres are stable
You need top-end breathing room
If acceleration feels dead → wrong gear.

🚫 Forbidden Zone
Gear 15+
Not suitable for:
GT300 racing
Duel situations
Bumpy GT2 tracks
Realistic JGTC behavior

If someone says:
“But my top speed is higher”
Answer:
“And your lap time is slower.”

📊 Quick Reference Table
Track Type
Gear
Technical / Bumpy
11–12
Mixed
12–13
Fast (Rare)
13–14
Anything above

❌
➡️ Most races are won at Gear 12
🧠 Final Takeaway (No Ego, Just Physics)
GT300 cars live on RPM continuity
Torque is limited → gearing must compensate
Short gears = alive engine = faster exits
If you naturally end up at gear 12
👉 your tuning logic is correct

This is universal, not car-specific. Fine tuning comes later.