[serdet]

So after playing with street tuner and wastegate duty cycles a bunch I was still having trouble hitting target boost numbers. So I took and inverted the tables. With a interrupt style bcs instead of a bleed style bcs I thought taking the pressure totally off the wastegate at lower rpm's until the turbo spooled would work better. So far so good and not overboosting yet but the turbo does come in alot quicker. Any ideas or suggestions would be appreciated.Kinda looking for what other people do when tuning for aftermarket bc solenoids.

[SeeeeeYa]

Originally Posted by serdet

So after playing with street tuner and wastegate duty cycles a bunch I was still having trouble hitting target boost numbers. So I took and inverted the tables. With a interrupt style bcs instead of a bleed style bcs I thought taking the pressure totally off the wastegate at lower rpm's until the turbo spooled would work better. So far so good and not overboosting yet but the turbo does come in alot quicker. Any ideas or suggestions would be appreciated.Kinda looking for what other people do when tuning for aftermarket bc solenoids.

When I first installed my Prodrive BCS, a blocking-type BCS, I could hit my boost targets with about 50% of the WGDC values I'd used with the stock bleed-type BCS. I still call for somewhat higher WGDC values during spool. Also, instead of following the Cobb formula of having ~9-10% difference between WGDC(Low) and WGDC(High) I set all my WGDC targets in WGDC(Low) and have 90% in all the WGDC(High) cells. Obviously, depending on your Boost Targets you will have to refine your WGDC(Low) table values, but not too far.

This all presumes some tuning of the coarse and fine gain Turbo Dynamics tables, of course. However, merely starting with the procedure above will give surprisingly effective results.

I first used the Prodrive on my LGT's VF40 setup, and was amazed at how much more effective it was. Later when I swapped to an AVO380 the transition only meant minor adjustments to the WGDC(Low) Table, as well as refinement of the TD tables for my application. All in all, the blocking-type BCS is worlds better, with one caveat, a somewhat serious one.... if it ever fails in the ENERGIZED position you risk blowing your motor as boost will be uncontrolled.