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Message: <blockquote data-quote="Nick@Apollo-Optics" data-source="post: 2025268" data-attributes="member: 1314">The JB4 has a CARB compliant version, so your'e good to go. Dyno charts below. Well, y'all said real world feedback so I figured I'd send over some feedback from one of our customers haha. But here is dyno charts from 5 Star Tuning. 4 Runs: Stock, Map 1, Map 2, and Map 3.Stock: 384.8 WHP, 448.3 LB-FTJB4 Level 1: 416 WHP, 505.7 LB-FTJB4 Level 2: 428.1 WHP, 504.6 LB-FTJB4 Level 3: 438.5 WHP, 516.7 LB-FTMap Notes: Map0: Fully disable JB4Map1: +3.5psi peak over stock, default map, 91+ octaneMap2: +3.5psi peak, less top end taper, more aggressive version of map1.Map3: +4psi peak, suggested for 93+ octane and/or modified trucks[ATTACH=full]452813[/ATTACH]</blockquote>