but on 1.1.27 you only have accel enrichment, VE, and lamda that is controlling the PW. SO i havent changed the accel enrichment, lamda is there to keep everything in place BUT my VE table on those areas are on the rich side for this reason: Due to heatsoak, when the IAT becomes higher than 28, the mixtures start to lean out. So the lamda wants to add more fuel.
eg. when it is cold outside, and the IATs are between 4-18C i can make the VE table to be specifically right for those temperatures,and then the EGO correction is practically not required, because everything works fine. However, if the IATs go above 25-28C then the EGO is always adding fuel and the car feels stiff and restrictive, because i believe it is seeing a lot of lean spots, as the EGO is not fast enough to compensate.
SO to avoid that, i made the VE table richer a bit so that it can compensate for this, as well as used the warm up enrichment curve to add more fuel when the CLT is high( as most of the times it follows the high IATs). This cured the problem BUT it also means that on the colder days, the EGO is always retracting fuel to keep the requested lamda. Can this be the reason for the high consumption alone?
i must say, i may have been a bit overreacting with the lamda, indeed before i fixed my timing table, by leaning out, i was getting better economy, but only up to a point. Then i expected to get even better when the timing was upgraded which didnt happen.
Im hoping that once i upgrade to 1.1.81, i can use the mat vs tps table to eliminate this need to keep the VE table rich on those areas.I will be also installing a phenolic spacer on the inlet manifold to reduce heat soak.
Gunnar, many thanks for the responces. As i said before, once im finalised with the ECU and equipment i must arranget to get on the dyno with you and build the timing table to perfection...
