hi I'm desperate bought my is220 last july I've had problems ever since. went into limp mode driving home day I bought it. had the egr replaced with genuine Toyota part. problem is runs fine while engine is cold. as soon as it reaches normal running temp it sort of misses at any speed so long as its cruising speed at same speed sort of juddery? put your foot down to accelerate its fine. also if I have to run round town after a while whiteish smoke comes out the exhaust