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hi, sorry for late reply, super duper bz lately, maybe need a long vacation afterwards. On dbw lags, actually hard to adjust it, not bcoz incapable, but due to emmision cntrl, which prtn only use same setting across the region. Since it is manual, compare to cvt which still can alter its tcu(which is done by punch with prtn collaboration), its fix. Can adjust the clutch manually for make it easier to launch by make it shorter, but if wrongly drive it, may damage the clutch.
The only things left is ecu mapping. I dun know too much details on iafm+ ecu mapping coz its diff people responsible for the mapping part, for iafm+, n another for cfe. Maybe u can ask sc everytime servicing, whether there is an update, but mostly only branch eon@prtn sc has the facility@service.
Since preve is quite heavy, agressive mapping may cause pretty high fc. Mostly setting is to provide balance between reliability, fc n performance.
While waiting for any setting, just adjusted u style of driving when power is ur concern such overtaking n need to move fast out of junction. While dbw throttle is diff than cable throttle, u can see how fast the rev drop after releasing the clutch during 1st gear, rev higher, so that when it drop, just drop at the region atleast at 2k rpm where by around 80% of torque already generated, such reving to 2.5k rpm(only apply if u need to drive faster than usual daily driving.)
while overtaking, make sure everytime u drop ur gear to overtake, the rev is around 3.5k rpm to 4k rpm, to get the most torque, and stay in gear until reaching 5k rpm atleast b4 upshift coz to take advantage of the runner shift to short one to promote faster air n better combustion. But that is only for engaging driving, for normal, rev to max 4k rpm b4 upshift is just enough for overtaking, n shift to the highest gear as soon as possible after finish overtaking coz reving more, more horse power but also means more burns of fuel.
If u notice,in any manual car, the gear ratio choosen related to peak hp n peak torque available. Generally, like in iafm+ manual, peak hp is at 5750 rpm, peak torque at 4k rpm, so, everytime u rev at peak hp at 5750 rpm and upshift,the engine rpm will drop around 4k rpm on the next change, n u continue rev to max hp,upshift, the rpm will drop around the region of max torque until overdrive gear. Thats why high rev engine also have high torque at high rpm to balance it out, in na form of course.
It jsut general rules coz very engine has diff character, but the trans tuning is to balance out hp n torque coz if not, can cause severe drop in pulling power, can cause high fc but no use coz power is un accessible through out the rev range.
Mitsu 4g18, eventhough has a lower rpm for max torque, ideal for town driving, but if accessing the whole power like revving to max hp, its not reallyengaging coz torque is dropping too early, so it become slower n slower reaching top hp.
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Nov 8 2012, 01:58 PM
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Otak blur already...
Dah bersawang dah...
Just mentioning.
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