Quote:
Originally Posted by AmuroRay
The BM3 tune is also just not as powerful as the stock M2 tune. They really hamper the car at top end.
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Highly doubt that. I'm running stage 1 tune and there is a noticeable increase in power in the top end running wagoner evo 2 IC. Like I just said, you're not going to get consistent power up top on the stock intercooler as the DME will just pull timing with the more aggressive targets.
Think about how any modern internal combustion engine is tuned. You've got the load targets (primary), boost target (usually secondary unless boost target is forced), and timing advance. When load/boost targets increase the car will always make more power under ideal conditions. Same with timing advance, except instead of setting it as high as possible you have to find the value that creates maximum brake torque. So yes you can "diminish" power by running too much timing advance past the MBT value at a given rpm/load but any competent tuner would be able to avoid this.
Once the ambient temp goes beyond a certain point you'll definitely see consistent power lost at the top with the stock IC, but not with an upgrade one.