My LC200 had been behaving reasonably since my last mod.
1) I did get the warning lights(similar to when EGR flow was insufficient) come on a couple of times late last year(2015)when cold starting but they go out on the next and sometimes next couple of restart which means it was not related to the ecu throwing a CEL. I discovered that it could have been caused by my two 12V batteries which were close to two years old. After changing the batteries to new ones, I have not had a recurrence of warning lights coming on at cold start for a good four months straight to-date!
2) On the rare occasion of going into higher altitudes(above 1000m) I suddenly discovered that the LC200 1VD-FTV was down on power! Uncharacteristically and in a very bad way! Car would be overtaken by any old bus trailing behind! On checking I discovered that the MAP(manifold absolute pressure) sensor which is fed boost through a plastic oil filter from behind the two throttle bodies had a leak. Yes, my plastic oil filter was cracked. Small little filter was changed and power was restored.
3) Discovered that my LC200 came pre-fitted with not four catalytic converters (two per bank of the v8) but six. Yes, three per bank. Had them removed and the turbo down-pipe re-fabricated straight through for better flow. I did not bother with mandrel bent pipes as other portions of the factory pipes were not so! Car was perceptibly louder with a swirly exhaust note at idle.
4) I do not like the EGR situation one bit! Throwing all that carbon infested air into my intake does it no good! And I still suspect that my EGR valves with the current restricted flow may have been leaking somewhat due to insufficient flow/clogging. I say this because I have not had time to take them out for cleaning and that the high altitude power although restored wasn't like before! I know my qualitative power analysis through seat of the pants may not be all that accurate but something is off!!
I had finally found somebody who could do some real problem solving for me! An ecu reflash through the obd port. Yup, fair dinkum. :-)
Check this out! https://www.facebook.com/Y3Tuned/
I did a short interview by posting some questions:
I especially like that portion where he can alter duration and timing of injection albeit by a little bit! Interesting info on the auto trans lockup. That's besides the EGR removal.
More to come...meanwhile I've removed all my previous mods and return my car back to stock conditions except for the slight EGR reduction and the free flow exhaust.
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