Meerology Posted May 13, 2015 Report Share Posted May 13, 2015 Hi all, I have a 2012 GT500 currently with a catback exhaust. I am planning on doing the following mods within a month. How much hp gains can I expect? How much would that affect acceleration (0-60)? CAI Headers 2.6 Pulley & Idler Overdrive harmonic balancer pulley Twin 65mm Cobra Jet throttle body Spark plugs Heat exchanger Tune Thanks in advance Quote Link to comment Share on other sites More sharing options...
08KR525 Posted May 14, 2015 Report Share Posted May 14, 2015 Whomever you're purchasing your pulley and tune from need to know what all you're adding to get the "canned" tune to you right. I'm sure they will be able to get you a ballpark figure as the sum of your parts isn't anything that unusual. Quote Link to comment Share on other sites More sharing options...
Secondo Posted May 14, 2015 Report Share Posted May 14, 2015 My guess is you'll be pulling about 600-625HP to the wheels and able to run (1/4 mile) low 11's- high 10's on a favorable day. 0-60 in the lower 3-second range if you can get traction. Quote Link to comment Share on other sites More sharing options...
BLUE 2010 SHELBY GT 500 Posted May 14, 2015 Report Share Posted May 14, 2015 i have a 2010 , so you have about 15 more hp then mine to start, so with that said , i did most of those mods except heat exchanger, and lower pulley which i have but never installed ( pulley will give more boost ,) i also have mid pipe,and 1 piece drive shaft ,stock my car had 477 to the wheels,after the tune and mods it now has 540 to the wheels ,i hope that helps you . Quote Link to comment Share on other sites More sharing options...
BLUE 2010 SHELBY GT 500 Posted May 14, 2015 Report Share Posted May 14, 2015 (edited) My guess is you'll be pulling about 600-625HP to the wheels and able to run (1/4 mile) low 11's- high 10's on a favorable day. 0-60 in the lower 3-second range if you can get traction. secondo, he would have to change the blower to a whipple or kenny bell to get to 625 to the wheels , also as we all know some dynos do not give the correct hp , i have been talking to a few shops in my area, and with a 2.9 whipple ,new tune ,injectors, i would be around 625- 640 depending on the tuner Edited May 14, 2015 by BLUE 2010 SHELBY GT 500 Quote Link to comment Share on other sites More sharing options...
BLUE 2010 SHELBY GT 500 Posted May 14, 2015 Report Share Posted May 14, 2015 Hi all, I have a 2012 GT500 currently with a catback exhaust. I am planning on doing the following mods within a month. How much hp gains can I expect? How much would that affect acceleration (0-60)? CAI Headers 2.6 Pulley & Idler Overdrive harmonic balancer pulley Twin 65mm Cobra Jet throttle body Spark plugs Heat exchanger Tune Thanks in advance if you are interested and have not purchased a lower pulley yet ,i have a new one still in the box, i paid $700 i will give it up for $ 500, just a thought Quote Link to comment Share on other sites More sharing options...
Secondo Posted May 14, 2015 Report Share Posted May 14, 2015 I have 556WHP with just a simple supercharger pulley and tune. In addition to that, he's going to have headers, O/D pulley and throttle body. How much HP do you think those are worth? Quote Link to comment Share on other sites More sharing options...
BLUE 2010 SHELBY GT 500 Posted May 15, 2015 Report Share Posted May 15, 2015 I have 556WHP with just a simple supercharger pulley and tune. In addition to that, he's going to have headers, O/D pulley and throttle body. How much HP do you think those are worth? not much, im not trying be a no it all , but we all hear how much all these mods do, for example headers , if your lucky with long tubes 25 hp . i have ford racing shortys and im lucky if i got 10hp, like i said in my other post,it all depends on the dyno itself, and the tuner, my tuner is consevative, so thats what my car ended up with 540hp ,if i wanted to push the tune a little maybe it would be at 560?, its all up to the tuner on how much he or she wants to risk your motor, i have heard of shops that there dyno is for bragging rights, sounds stupid , but the truth, i have spoken with other gt 500 oweners 2007-2012 with almost the same mods and the numbers are total different ? its the dyno type or non consevative tune ,mine and your motor are close in hp, and i have shorty headers,mid pipe, corsa .pulley ,tune,cai, one piece drive shalf i have less hp that yours, ? Quote Link to comment Share on other sites More sharing options...
KB12 Cobra Posted May 15, 2015 Report Share Posted May 15, 2015 i have a 2010 , so you have about 15 more hp then mine to start, so with that said , i did most of those mods except heat exchanger, and lower pulley which i have but never installed ( pulley will give more boost ,) i also have mid pipe,and 1 piece drive shaft ,stock my car had 477 to the wheels,after the tune and mods it now has 540 to the wheels ,i hope that helps you . You have a good looking 2010, what size tires are on your Alcoa's? Quote Link to comment Share on other sites More sharing options...
Secondo Posted May 15, 2015 Report Share Posted May 15, 2015 Ah, so I see how it depends a lot on the tuner and dyno. I'm hoping he gets at least 600WHP with those mods. An aftermarket supercharger would unlock tons of HP with his supporting mods. Quote Link to comment Share on other sites More sharing options...
11Snake Posted May 15, 2015 Report Share Posted May 15, 2015 Ah, so I see how it depends a lot on the tuner and dyno. I'm hoping he gets at least 600WHP with those mods. An aftermarket supercharger would unlock tons of HP with his supporting mods. I've read an article from "Muscle Mustangs & Fast Fords" a few years back on comparing dyno shops. The magazine tested the same car on the same day, in the same area at 4 different speed shops with over a 30% difference in dyno numbers. The article suggested some dynos were not calibrated correctly for "SAE Smoothing 5" at 77 degrees versus "Standard" correction or even "Uncorrected" numbers which usually result in inflated numbers depending on ambient temp, barometric pressure, humidity, etc. Dynos can also be manipulated to promote a part showing inflated or artifical gains. A tuner can have a 400 rwhp car show 550 rwhp. I have no dought you will get a significant increase. The baseline should be close to the manufacturer's rating once converted from rwhp to ehp in most cases to start with. If they are, than your rwhp after mods will be "real world" with a reputable tuner. Also insist on a "safe tune" versus "one on the ragged edge", it's not worth another 10-20hp. Power is easy with these cars, attention to traction mods will be necessary. Quote Link to comment Share on other sites More sharing options...
BLUE 2010 SHELBY GT 500 Posted May 15, 2015 Report Share Posted May 15, 2015 You have a good looking 2010, what size tires are on your Alcoa's? i have to look at the tires myself and will get back to you, thanks for the compliment Quote Link to comment Share on other sites More sharing options...
BLUE 2010 SHELBY GT 500 Posted May 16, 2015 Report Share Posted May 16, 2015 You have a good looking 2010, what size tires are on your Alcoa's? kb12, fronts are,255/35/zr20 and rears, 275/35/zr20 Quote Link to comment Share on other sites More sharing options...
KB12 Cobra Posted May 16, 2015 Report Share Posted May 16, 2015 kb12, fronts are,255/35/zr20 and rears, 275/35/zr20 Thanks for responding, are they the MPSS? Quote Link to comment Share on other sites More sharing options...
BLUE 2010 SHELBY GT 500 Posted May 16, 2015 Report Share Posted May 16, 2015 Thanks for responding, are they the MPSS? no they are falken 452 and they are not not good, i am going to change to mickeys et or nitto nto5 Quote Link to comment Share on other sites More sharing options...
Meerology Posted May 20, 2015 Author Report Share Posted May 20, 2015 (edited) Thanks for all your replies.The numbers seem good for me...at least for now Pretty excited to do these mods Edited May 20, 2015 by Meerology Quote Link to comment Share on other sites More sharing options...
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