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Power Strokes
6.4 Aftermarket
Powerstroked08 build
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[QUOTE="B585Ford, post: 889815, member: 5497"] You know I am no expert on these matters but I got to thinking about this a little and since it is free to try with MCC, maybe this would help before you re-route the gate...Since these are not drop ins, I am not sure how the exhaust air is routed, but I thought I remember someone saying the up pipes feed all exhaust air to the HP turbo first and then all of that goes on to feed the LP turbo. If that is case, you might want keep your aggressive program the same down low to aid in spool up, but around 2250 RPM or so cut the vanes back sooner. In other words, get them to 5% shortly after hitting that RPM at WOT. In theory, this may help you keep the air velocity up that is coming to the LP turbo to drive it harder. Again, I may be way off on this, but if that is how the plumbing is setup, it might be worth a try. Oh yeah, based on my past experiences with MCC, you might have to actually lower the EBP tables in the same RPM ranges where you are dropping the vanes to get the vanes to go to their desired position. I base that last thought on the fact that when I first tried to do an exhaust brake program, when I just adjusted the vane tables without adjusting the EBP tables, it didn't do anything....but if I adjusted the EBP tables without messing with the vane tables, the exhaust brake works. That make me think the computer is basically following the EBP tables and those tables over-ride the vane tables. I had also experimented with trying to reduce my EBP tables to lower the EBP at WOT and found that lowering the EBP tables didn't do anything at WOT. I assume that was because at full fuel, my setup couldn't keep the EBPs in check without cutting the PW which the computer did not do on its own (it still followed the PW tables even though the EBPs were outside their desired. [/QUOTE]
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