hello subie nation! i just got back home from Orlando Speedworld. i ran my fastest time to date. 13.6 @ 99.7 mph 1/4 mile. i have a 02 WRX wagon. she has all HKS exhaust both up and down pipes, STI intercooler, K&N with air intake silencer delete and GFB bov & mbc. i know mbc are frowned upon but iam taking it off her right now as i write. my question is, which i'll prob. answer, why go with EM when a MBC cost soo little ca$h? let the debate begin

 

Engine management affords even more power with correct fueling across the RPM range, which means safer running for long-term durability of the engine.

MBC makes for great mid-range throttle response but you may also encounter the occasional part-throttle, full boost condition that can lead to a lean condition that can eventually destroy an engine. An MBC cannot be adjusted for correct ignition advance for all throttle/load conditions and cannot adjust air/fuel ratio for additional cooling at higher-than-stock boost levels.

Your trap speed is pretty good. You might get away with running an MBC for short duration drag strip use. I wouldn't chance it with my daily driver running on pump gas. I have an off-the-shelf EcuTek reflash, catless uppipe, and a catback exhaust (factory downpipe and 3rd cat) and turned 13.87 at 96+ mph in my '02 WRX sedan with an unmodified factory airbox and OEM filter element, stock bypass valve (BOV), stock IC.

Yes, engine management, whether Cobb AccessPORT or EcuTek reflash, costs more than an MBC but I wouldn't run higher boost any other way just for peace of mind.

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0==WW==0
"…axles of evil…" - george w. bush

 

hello, i just finished removing the MBC and hooking up the factory boost selenoid. i totaly agree with you, EM is the way to go. it's just soo $pendy, right now.