A90 Supra JB4 Tuning Box Dyno Test - Is it Worth it?

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If you have a A90 / A91 Toyota Supra with a locked ECU / DME You may be considering a Burger Motorsports JB4 Tuning box, A viable alternative to costly unlocking then tuning with BM3 or MHD and with claims of 100 bhp certainly worth thinking about BUT are those gains realistic? I put the Zeroyon Supra on the dyno to see what realistic gains you could expect if you buy one on map 1 and map 2 compared with standard
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Видео A90 Supra JB4 Tuning Box Dyno Test - Is it Worth it? канала ZEROYON