[CSG Mike]

Originally Posted by tomm.brz

i ll join since I tuned him.. with e85 initially, with OFT (!) and STOCK injectors (!!) offset by a 35% almost on their cc size table
with 8-9psi, his use of stock PI injector on e85 was already on the edge
he has plenty of power on e85 and high timings and then he also suddenmly switch to 91oct e10
The slightly rixher afr needed for 91 makes the use of PI even more extreme so that final ign timing went of course down and I set them to the edge of knock

and then he asked me if he would make more power with an electronic controller and raising the boost, and I answered to him that with e85 would probably be no problem, since it still had some headroom in timings with the base boost, but I also said that raising boost, with oft and stock injectors and flex fueling, would create problems because injectors are maxed out and I wasn t comfortable in tuning that anymore

With ecutek and/or bigger PI i would have no problem in saying to him to raise boost

Are you able to lower boost on the setup while on gasoline?