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Originally Posted by cody
I have a custom tune. MBC's are bad on a stock ECU, but a good MBC should really help my boost response and isn't dangerous with a tuned map. Ed suggested it and assured me there's no need for a retune.
Thanks for the info.
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Well shit, with logic like that, you should just reflash back to stock and run the MBC and UniChip I've got rolling around in my workbench drawer. I'll sell it to ya for only $50!
Think of it this way: if you install a MBC and set it to say 15 psi, sure you'll run right up to 15 psi in 1st and 2nd gear as soon as possible, and you'll avoid some of that boost wobble due to the factory EBC, but you're not going to be able to taper boost at high rpms. If you think you can run a stock turbo at 15 psi at 6500 rpm in 4th gear down the backstraight at RFR all day long, I've got a 2.0L shortblock in my garage I'll sell you, 'cause you'll need it. So, you're going to have to set the MBC to say 13 psi. Granted you'll have a nice rock solid 13 psi all day in every gear (well until the weather changes and you're under the hood w/ an allen wrench), but I'd rather have that 15.5 psi when it's safe and the taper to 13 psi on the top end making sure my motor will last.
If MBC's were so great, I'm pretty sure Subaru would have put one on the car to begin with 'cause they're about 1/50th the cost of the EBC.