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On the budget rear diffuser topic, is there any advantage to just closing up the rear USDM bumper cover parachute? I'd can only imagine the air is just filthy under the car at that point, seems like it could go either way.
yes it is absolutely worth it in my opinion. if anything it could help with high speed stability at minimum.
^ is that for autox or track? Are those rods just screwed into the plastic bumper cover or there's support behind them? Might rip off the bumper at 140 mph with a splitter that large.