Ohthatguy
Well-Known Member
- Thread starter
- #1
So I had an 18 auto GT that was bone stock except for wheels and tires. I never dyno'd the car but I ran it against my co-workers' cars (2015 Panamera Turbo and 2015 Jaguar F Type R). My first 18 GT auto pulled away just by a hair against the Porsche and was dead even with the F Type R (both from 40 mph rolls on a closed course).
I traded the GT in for something else then went back to a 2018 GT Mustang auto about a month ago. Both cars were base GTs with basically no options but the new one just felt less potent that I remembered the first one feeling. I swapped the MRR wheels onto the new car along with the 325/30/19 MPSS I ran on the prior car. The only changes are switching from 28 lb Michelin Sport 4S front tires to Pirelli 275/40/19s that probably weigh 32 lbs., the faster car was lowered on Ford Performance Street/ X springs vs stock on the slower car and the new 18 has a resonator delete (replaced with a fabbed up H pipe at a local muffler shop).
I never dyno'd the first car but the second one laid down 413rwhp and 387rwtq (in 6th gear) after the wheels/ tires/ resonator swap. I haven't run against the Porsche in the new car but the Jaguar was pulling a couple of cars on it where the prior 18 hung in there. Same drivers, same S mode punch, same road. The difference in performance has to amount to 20 hp or so. Bummer.
I traded the GT in for something else then went back to a 2018 GT Mustang auto about a month ago. Both cars were base GTs with basically no options but the new one just felt less potent that I remembered the first one feeling. I swapped the MRR wheels onto the new car along with the 325/30/19 MPSS I ran on the prior car. The only changes are switching from 28 lb Michelin Sport 4S front tires to Pirelli 275/40/19s that probably weigh 32 lbs., the faster car was lowered on Ford Performance Street/ X springs vs stock on the slower car and the new 18 has a resonator delete (replaced with a fabbed up H pipe at a local muffler shop).
I never dyno'd the first car but the second one laid down 413rwhp and 387rwtq (in 6th gear) after the wheels/ tires/ resonator swap. I haven't run against the Porsche in the new car but the Jaguar was pulling a couple of cars on it where the prior 18 hung in there. Same drivers, same S mode punch, same road. The difference in performance has to amount to 20 hp or so. Bummer.
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