Originally Posted by
camo61
Hi , Im new to HP Tuners having just purchased the program. Therefore I have limited experience. Im working hard to learn. As Im in Australia I thought I would try this forum to see if anyone can give advice to some issues Im having. One of the first jobs I have gotten into is a conversion of a L98 6 litre with a 6L80 transmisiion into a 80 series Toyota Landcuiser. I have been told it is about the same size and weight as a Cadillac Escallade. All the conversion has gone fairly well except some shifting issues with the transmission. When travelling at any speed below 110 kph 65mph it keeps shifting in and out of 6th gear. It does this like every 200 metres all throught he speed range. Also after the transmiaaion has warmed up it will do a very harsh down shift selecting a gear lower than what is hould (2nd gear) at aroung 50kph 30mph. The engine and transmisiion is out of an 2008 Holden Commodore. I have used the fly by wire accelarator pedal and have put an extra speed sensor. I am more inclined to see if I can get hold of an Escalade transmission tune. As it is around the same weight and size as a vehicle. We have altered all shift patterns by the speed log but it sill has very harsh downs shift when you slow down from 100km-75km, drops down 2 gears. up shift is perfect. Some ideas or help would be much appreciated.
Cheers Jarrod
ps thanks to shriek for your helpful advice. And it is a 2008 model