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Terryfied · 08-02-2018, 07:09 PM

I installed headers, K&N Typhoon Cai and got a dyno tune that netted 380 hp on a 52k mile 2010 2SS, L99. A friend went to the same shop a year later with the same mods, same year with 60k miles and netted 423hp. The tuner used my tune on his car too! We both put in fresh plugs, he put on new wires but I didn't. The weather conditions were very similar too. Tune was done on a Mustang dyno. Why the hell would there be such a disparity in hp? The LS engine builds can't be that inconsistent can they?

08-02-2018, 07:09 PM	#1
Terryfied Drives: 2010 2SS L99 Join Date: Jan 2016 Location: Enumclaw, WA. Posts: 202 View My Garage	Difference in HP I installed headers, K&N Typhoon Cai and got a dyno tune that netted 380 hp on a 52k mile 2010 2SS, L99. A friend went to the same shop a year later with the same mods, same year with 60k miles and netted 423hp. The tuner used my tune on his car too! We both put in fresh plugs, he put on new wires but I didn't. The weather conditions were very similar too. Tune was done on a Mustang dyno. Why the hell would there be such a disparity in hp? The LS engine builds can't be that inconsistent can they?