Mast M-90/M-120 vs. GM ECM - Lateral-g Forums

07-09-2013, 11:20 AM

BANKO

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Mast M-90/M-120 vs. GM ECM

Hello Guys, I'm in the planning stages of an LS swap (525hp LS3) and just wondering if you have any experience with the MAST ECM compared to the stock GM ECM? I'm thinking it will provide better tuning options for HP upgrades over the GM ECM. Not sure if the +$800 - $1000 is worth it for the Mast unit over the GM one.

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Josh

Designing a '65 Chevelle with a StreetFighter theme, inspired by JP's II Much & Ron Schwarz's $5k Mustang

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