I have 748s with 50mm ti-termis and was told by my dealer i coluld ride it with out changing the chip, might not run so well but do no damage.
He also said the DP chips were better than the JHP one I got
You also do not need the 45-50mm mid-section to fit 50mm cans to a 748s
[Edited on 23-2-2005 by Lee1980]