i have a 2000 mustang gt. its a 5 speed, mods are bbk longtube, o/r x pipe, flowmaster mufflers, 75mm bbk tb, 75mm accufab plenum, 4.10 gears, steeda underdrive pulleys, 125 zex wet nitrous kit, steeda tri ax shifter, sct x cal2 tuner. i recently dynoed on a dynojet...put down 245rwhp n/a and 317rwhp spraying 100 shot. but i was having problems out of nitrous at the time, i know why i was gettin 70-75 hp gain out of the nitrous, the lines were leaking! but anything the point im gettin to is, the 245rwhp about made me cry...that is very disappointing. i dynoed 238rwhp minus headers, x pipe, sct cal, udp's. i know i hsould get more than 7hp out of those 4 mods. do i need a dyno tune or what? how much hp could i gain from a custom dyno tune...the closest place i know of close to me is in owensboro,kentucky.. the shop is called Speedys Dyno and muffler shop
www.speedydyno.com

someone just please help me! i need to do soemthing.....is soemthign wrong with my car OR do i just need a GOOD TUNE?

 

make sure your going back to the same dyno shop.... thats the only way you can be atleast a bit accurate on HP gains


friend of mine has a 9 sec truck, he an a dyno locally and came up with 617 HP and in atlanta he dynoed 642HP

i asked him why he said each dyno uses a certain amount of drag on the rollers that NOT a single dyno is the same, he said they can reduce the drag or add drag to them rollers... they only good for a reference to see what each thing you do gives you any gain or not basicly