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send your injectors to rce to be reconditioned. peak power is open loop so no feedback from the ecu. clogged injectors might perform ok in closed lop operation and poop the bed under higher load. ditto an old fuel filter. get a wideband o2 sensor and chuck it in the tailpipe and see what your afr readings are doing when you step on it. heck, your cat delete pipes might even have a bung for it.
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