New to the forum and new to tuning, I have an LBZ with a DP 2.5 Stage 1 VGT with a TCT wheel in the valley and a BW S400SX-80 ET-R HO Billet wheel with a race housing.
What I am trying to accomplish: Very quick spool up out of my little turbo to get off the line quick without having to powerbrake, also for a snappier take off while just driving. without seriously sacrificing top end power as well.
My concept on how to achieve faster spool-up: I am thinking about sending my valley back to Mark and having him upgrade the vanes and wastegating it. I am hoping for a little quicker spool-up out of the vanes. I am hoping by wastegating my valley turbo I would be able to adjust the tuning for the vanes to have them spool the charger much quicker. Now since this would most likely significantly increase my drive pressure shortly after, having the wastegate on the turbine housing, I could direct the extra pressure back into the pipe feeding my 80mm helping it to spool faster as well.
My concept for not loosing too much top end power: I am assuming that to get my truck to light and respond with the power I want I would need to pull quite a bit of boost out of my little charger meaning I would want to set my wastegate heavier as not to push flow to big charger too soon. If I used a programmable boost controller for my wastegate like the HKS EVC6-IR (regulates boost based on tuning written for throttle position and rpms) I could keep the wastegate closed to achieve a higher boost out of my valley charger, then as the big charger begins to get up and going, have the gate transition so it opens easier allowing for most efficient boost and drive pressure combination.
Additional thoughts/questions: If vane position, torque based fuel, and pedal position based torque are all something that can be adjusted in a specific dsp program, then if my crazy a** theory is possible, wouldn't this be something I could program to be on a single setting such as position 5 on my dsp 5, and a slightly different tune not as aggressive on the low end for my 4th position. The wastegate controller has 3 different postion settings as well which would allow for
Final Thought: It might be completely impossible due to something obvious I'm not paying attention to, but I figure I'd ask to see where the faults in my theory are. Maybe, just maybe there's some sort of way to make this work.
What I am trying to accomplish: Very quick spool up out of my little turbo to get off the line quick without having to powerbrake, also for a snappier take off while just driving. without seriously sacrificing top end power as well.
My concept on how to achieve faster spool-up: I am thinking about sending my valley back to Mark and having him upgrade the vanes and wastegating it. I am hoping for a little quicker spool-up out of the vanes. I am hoping by wastegating my valley turbo I would be able to adjust the tuning for the vanes to have them spool the charger much quicker. Now since this would most likely significantly increase my drive pressure shortly after, having the wastegate on the turbine housing, I could direct the extra pressure back into the pipe feeding my 80mm helping it to spool faster as well.
My concept for not loosing too much top end power: I am assuming that to get my truck to light and respond with the power I want I would need to pull quite a bit of boost out of my little charger meaning I would want to set my wastegate heavier as not to push flow to big charger too soon. If I used a programmable boost controller for my wastegate like the HKS EVC6-IR (regulates boost based on tuning written for throttle position and rpms) I could keep the wastegate closed to achieve a higher boost out of my valley charger, then as the big charger begins to get up and going, have the gate transition so it opens easier allowing for most efficient boost and drive pressure combination.
Additional thoughts/questions: If vane position, torque based fuel, and pedal position based torque are all something that can be adjusted in a specific dsp program, then if my crazy a** theory is possible, wouldn't this be something I could program to be on a single setting such as position 5 on my dsp 5, and a slightly different tune not as aggressive on the low end for my 4th position. The wastegate controller has 3 different postion settings as well which would allow for
Final Thought: It might be completely impossible due to something obvious I'm not paying attention to, but I figure I'd ask to see where the faults in my theory are. Maybe, just maybe there's some sort of way to make this work.
