Secondly although obd2~ Fox has a full rigid body

Secondly, although obd2~ Fox has a full rigid body (have to say that Fox is doing very well at this point), but the suspension was tuned relatively softer cornering roll is more obvious, therefore, a higher hardness faceliftspring damping effect will be good on many. However, it is worth noting that things are degrees. If put to excellent stir tooth hanging with the high rigidity of the body, driving sensation inevitably too tight, body bounce obvious, not a perfect frame multiply. If you encounter frustrations, vehicle driving track will be damaged. So, the choice as far as possible to consider their own use areas, avoid blind pursuit.

Then power. Original 1.8L, 2.0L, has a maximum horsepower of 126 and 147, have been more than enough to cope with the day-to-day use, but not to mention how much performance. So, feeling really ambitious when, will be able to consider a higher level. Intake and exhaust ring, it is much to do. BMW OPS DIS V57 Fox set gas compartment (Compare peer models), although there are conducive to the maintenance of low twist restricted inspiratory smooth high rpm, the replacement of the mushroom head or high-flow style will be improved. The power conversion dynamic situation as bearing the body to increase the air flow, the original 68mm electronic throttle is a threshold. If sanding is to increase the throttle inner diameter will make the air flow in mind to detect abnormalities, so to be replaced, or is considering to install horse 6 cable throttle (only in the old section 6 Ma), although the original, but convenient and direct. Later, intake obd2  manifold smaller curvature is too large, easily lead cylinder aspirated, the same is not suitable for Bigfoot throttle fierce summon turn maintain low torque design. Cosworth intake manifold, the car facelift addition to increasing the volume of the intake, its internal use of the bell design class four jets, direct injection, a substantial increase in the efficiency of the air intake. Exhaust side, four will inevitably arise excessive back pressure, and the design is fairly narrow, easy to speed in a crowded city, but also Fox triumph and the stumbling block. 4 2 1 replacement, back pressure tail drum to take into account the low torque state, but also to eliminate poor exhaust high rpm, is indeed the best policy. If was not enough, that the text in the gm tech2 turbo program will be available for you to choose.