Hey
@Nihamavasa72 try this tune below and see if it suits you, and I also got a good time with it as well.
Lexus IS GT-1 '04 (492PP)
PP: 492
BHP: 341
WEIGHT: 1,010
WEIGHT DIST: 53 : 47
TIRE(S): Front: Racing Soft Rear: Racing Intermediate
GT Auto:
Rigidity Improvement - Yes
SUSPENSION: Full Custom
RIDE HEIGHT - 70/60
SPRINGS - 14.50/10.70
COMP - 5/3
EXT - 4/4
ARB - 6/7
CAMBER: 0.0/0.0
TOE: 0.00/0.00
BRAKES: Racing
BRAKES - 7/6
TRANS:Full Custom
(install all power upgrades first!)
FINAL TO - 5.500
TOP SPEED TO - 180kmh
1ST - 2.985
2ND - 2.346
3RD - 1.910
4TH - 1.586
5TH - 1.343
6TH - 1.145
7TH - n/a
FINAL - 3.300
LSD: Full Custom
INITIAL - 10
ACCEL - 8
DECEL - 14
CLUTCH TYPE: Triple-Plate:Installed
CARBON SHAFT: Installed
POWER PARTS:
ENGINE TUNING - Stage3
EXHAUST - Racing Exhaust
POWER LIMITER - 100.%
DOWNFORCE - Front: 150 Rear: 360