I run a T70 with a Q trim turbine, but just changed to a S trim turbine, back pressure has anways been a big issue on my car. was running 25# boost and now with my ice water to air intercooler going to 35# boost. as I said dividing my intake port cut the flow by 25% and I feel I need the higher boost to make up the difference, will see.
Been working day and night to get a car ready for Pebble Beach this Aug. and don't know when I will get it running again.
Hope the new forum gets going and see what other combinations people are using.
Harry
