genuine/OEM car parts exporting service
		car parts delivery service
		diagnosis/solution of a problem of car parts/vehicles
		car parts consulting service for upgrade/tune up
		other service related with car parts
		whatever for Japanese car parts

Which part should I start tuning from? (for beginner)
	name of a part	why?
1.	brake pad	Acceleration of a car is very important factor in sports-driving. And many people are apt to be captivated by it. However, once a car starts moving, the speed has to be reduced sooner or later. Control of speed by brake is the most important factor in sports-driving. As you know, the only part that reduce the speed is brake pad. Nothing else. 8 pieces of pads that are much smaller than a palm of a hand are controlling speed of a car that is more than 1000kg. We think original brake pads are very poor and it's useless at battle fields. When you are driving your car at downhill in sports-driving, original brake pads start burning very soon. And effect of brake becomes extremely bad once they start burning. Extremely danger! You can't drive your car even normally. We strongly recommend you to replace brake pads first if you start tuning of your car. You can feel much brake power by aftermarket brake pads (a certain quality is required) from the beginning. And it's still effective after burning. In addition, prices are not expensive so much. Incidentally, never stop moving the car while brake rotor is burning. Cool down!
2.	full-harness seat belt	Original seat belts (3 point mount) actually save your life, but weak point of the belts is movement to a side direction. Also, fastening of lap-belt is a problem though it's impossible to fix a human-being by single shoulder-belt originally. Anyway, it's impossible to control a car in a cabin of a car that is moving extremely due to a problem of movement of the upper part of your body. Especially, double shoulder-belt is required at the least so that the upper part of your body keeps the best position. In short, full-harness seat belt (4 point mount or more) is necessary as a tool of tuning.
3.	shock absorbers	Do you know about life of original shock absorbers? 3 years? 10000 miles? No, no. The answer is only 3 minutes and 5 miles if a famous rally-driver drives a car at a rough gravel road. Internal oil seals burnout, and it can not continue using any more. This is a special story, but you can't continue using original shock absorbers more than 2 months if you are enjoying sport-driving. If your car is swinging at the end of a curve, there seems to be 2 problem. One is skill of your driving. Another is a problem of shock　absorbers. This is caused by a problem of extension side of shock absorber (outer side of curve, especially, rear). No need to replace coil springs yet. Enjoy sports-driving without replacement of coil springs for the time being so that you can feel difference between new shock absorbers and old ones first and then you can feel difference between original coil springs and upgraded coil springs later on.
4.	coil springs	Stiffness of original coil spring is soft because car manufacturers need to make their products comfortable for common people. But it makes ability of original suspension system worse because soft　coil springs make the car more tilted while the car is turning. In short, softness of original coil springs is lowering ability of original suspension system. If you replace original coil springs to stiff ones, ability of turning of your car increases because ability of original suspension system itself returns to original one. Also, you can run through a S-curve much quicker because depth of tilt decreases and returning to the original position is quick. In addition, response of steering becomes better! Some people worry about comfort because he sometimes enjoy ordinary driving with a girlfriend. Actually, it never goes to better directions. However, uncomfort by stiff coil spring is not so much because it is mainly caused by stiffness of initial bumping of shock absorbers.
5.	coilover	Coilover is one of a better way to get both shock absorbers and coil springs at a time. Also, height adjustment (+shock absorption adjustment) is available in some sorts of coilover. In addition, a certain degree of setting according to each automobile that is checked by each maker is already done. If you are a little skilled in sports-driving, it's highly recommended. However, you are still a beginner, I don't know if it's good for you because you can't learn about difference mentioned above.
6.	strut tower bar	Strut tower bar is not a part for decoration, as you know. It increases stiffness of upper mounts. If there is not, shocks from a road have to be caught by an upper mount alone. If an upper mount caught shocks from a road alone, the force doesn't go anywhere, and the body starts warping. In short, suspension can not provide original ability effectively due to a problem of the warp. If there is, shocks from a road are transmitted to opposite side of upper mount, and the force is dispensed. As a result, ability of suspension increases, and response of steering becomes good. When your car is turning a curve at high speed, upper mounts are receiving strong force. Even if it's a smooth tarmac road, things are the same. Also, lower arm bar is as well as strut tower bar.
7.	suspension bush/mount	In suspension parts, a lot of rubber bushes are used to soften shocks from a road in order to expand life of the body and to keep comfort as well as shock absorbers. But these rubber bushes disturb drivability. In a word, they put wheel alignment out of order when strong force is submitted. Also, some bushes disturb original ability of suspension. For example, a bush for a front suspension tension rod. (supporting toe of wheel alignment) Toe of front wheel alignment starts moving badly when hard-braking though it has to keep original position. Also, rubber bush of front upper mount disturbs response of steering. Imagine! Which is easier? To drink very hot coffee on a trampoline. Or, a stiff board.

Toyota Supra 70&80	vol,4	Subaru Legacy Touring Wagon	vol, 5	Mazda RX-7 No,1 FD3S & FC3S	vol, 6
Honda Civic & CR-X EF-EG Civic & CR-X	vol, 7	Nissan 180SX & Silvia RS13 & S13	vol, 8	Honda Accord Wagon	vol, 9
Mitsubishi Pajero	vol, 10	Nissan Skyline GTS-t R32 & R33	vol, 11	Subaru Impreza No,1	vol, 12
Honda Odyssey	vol, 13	Eunos (Mazda) Roadstar	vol, 14	Nissan Skyline GT-R R33 & R34	vol,15
Toyota Hilux SURF	vol, 16	Mitsubishi Lancer Evolution I & II & III & IV	vol, 17	Toyota Levin/Trueno AE86 & 92 & 101 & 111	vol, 18
Nissan Silvia S13 & S14	vol, 19	Nissan Cedric & Gloria	vol, 20	Toyota MR2	vol, 21
Suzuki Wagon R	vol, 22	Mazda RX-7 No,2 FD3S & FC3S	vol, 23	Subaru Legacy Touring wagon & sedan No,2	vol, 24
Nissan Fairlady Z Z32	vol, 25	Toyota Mark II & Chaser & Cresta JZX90 & 100	vol, 26	Honda Integra DA & DB & DC	vol, 27
Subaru Impreza No,2	vol, 28	Toyota Supra No,2	vol, 29	Toyota Celica	vol, 30
Honda Civic & CR-X No,2	vol, 31	Honda NSX	vol, 32	Mitsubishi Lancer Evolition No,2	vol, 33
Toyota Aristo	vol, 34	Toyota Soarer	vol, 35	Toyota Celsior	vol, 36
Nissan Skyline GTS-t No,2 R34 & R33 & R32	vol, 37	Nissan Stagia	vol, 38	Toyota Landcruiser Prado	vol, 39
Subaru Legacy Touring wagon & sedan No,3	vol, 40	Subaru Forester	vol, 41	Nissan Primera	vol, 42
Toyota Altezza	vol, 43	Toyota Starlet	vol, 44	Suzuki Jimny	vol, 45
Honda S2000	vol, 46	Toyota Vitz	vol, 47	Toyota Levin & trueno	vol,48
Nissan Silvia S13 & S14 & S15	vol, 49	Toyota MR2 No,2	vol, 50	Mazda Roadstar	vol, 51
Nissan March	vol, 52	Suzuki Escudo	vol, 53	Mazda RX-7 No,3	vol, 54
Toyota Mark II & Chaser & Cresta No,2	vol, 55	Nissan Skyline GT-R R32	vol, 56	Nissan Skyline GT-R R33	vol, 57
Nissan Skyline GT-R R34	vol, 58	Subaru Impreza No,3	vol, 59	Nissan Skyline No,3	vol, 60
Mitsubishi Lancer Evolution No,3	vol, 61	Honda Integra No,2	vol, 62	Toyota MR-S	vol, 63
Toyota Altezza No,2	vol, 64	Subaru Legacy No,4	vol, 65	Honda Civic No,3	vol, 66
Nissan Stagia No,2	vol, 67	Nissan Silvia No,4 S13 & S14 & S15 & 180SX	vol, 68	Toyota Aristo No,2	vol, 69
Toyota Supra No,3	vol, 70	Toyota Levin & trueno No,3	vol, 71	Mazda RX-7 No,4	vol, 72
Mazda Roadstar No,4	vol, 73	Subaru Impreza GC8	vol, 74	Subaru Forester No,2	vol, 75
Honda S2000 No,2	vol, 76	Honda Integra No,3	vol, 77	Toyota Landcruiser & Prado No,2	vol, 78
Toyota Vitz No,2	vol, 79	Honda Fit	vol, 80	Mitsubishi Lancer Evolution No,4	vol, 81
Nissan Fairlady Z No,2	vol, 82	Honda Accord sedan & wagon	vol, 83	Subaru Impreza	vol, 84
Nissan Silvia No,5	vol, 85	Toyota Mark II & Chaser & Cresta No,3	vol, 86	Toyota Celica No,2	vol, 87
Subaru Legacy No,5	vol, 88	Nissan Skyline No,4 V35	vol, 89	Nissan Skyline GT-R No,3	vol, 90
Mazda RX-7 No,5	vol, 91	Mazda Roadstar No,5	vol, 92	Honda NSX No,2	vol, 93
Honda Civic No,4	Vol, 94	Mtsubishi Lancer Evolution No,5	vol, 95	Mazda RX-8	vol, 96
Honda S2000 No,3	vol, 97	Toyota Altezza No,3	vol, 98	Daihatsu Copen	vol, 99
Nissan Skyline GT-R No,4	vol, 100	Nissan Fairlady Z No,3	vol, 101	Nissan Silvia No,6	vol, 102
Mitsubishi Lancer Evolution No,6	vol, 103	Nissan March No,2	vol, 104	Honda Integra No,4	vol, 105
Subaru Legacy No,6	vol, 106	Subaru Impreza No,4	vol, 107	Toyota Vitz No,3	vol, 108
Nissan Skyline GT-R No,5	vol, 109	Mazda RX-8 No,2	vol, 110	Mazda Roadstar No,6	vol, 111
Honda S2000 No, 4	vol, 112	Nissan Silvia No,7	vol,113	Daithatsu Copen No,2	vol, 114
Subaru Impreza No,5	vol, 115	Toytota Aristo No,3	vol, 116	Mitsubishi Lancer Evolution IX & MR	vol, 117
Subaru Legacy No,7	vol, 118

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