Sprint Booster for the 2015 Genesis 5.0

[carguy75]

This is why I don’t believe a thing about sprint boosters. It would the completely incompatible with the notion that you're avoiding the kickdown switch but somehow getting 100% throttle.

Fun fact: There is no kickdown switch.

I wished that I actually knew how the Sprint Booster works and what it really adjust on the Genesis throttle by wire system. Myself and others have speculated on throttle plate openings, kick-down switches, etc., however all I really know is that the engine respond quicker with the Sprint Booster than without it like the other cars tested on YouTube videos.

I give up creating theories and assumptions about how the device increase the throttle response in my engine. I am not an automotive engineer, so I give up trying to understand how this device actually does what it does. All I know is that the Sprint Booster works as advertised. Good enough for me.

 

[carguy75]

Old post but i didn't see to much info that I think should be added. Hyundai for whatever reason holds full throttle push (stomping down not stumping) to only 80%. These boosters allow to 100%. Same holds true for the coupes. Some say it was related to Toyotas lawsuit about stuck accelerators, and Hyundai was being careful.
The ecu as someone already mentioned, is careful in how fast it allows the throttle to open.
This fixes that also. Turn off traction control and do a full throttle launch with and without the booster turned on. Compare your burnout Marks...lol real world testing
For anyone saying these are snake oil have no clue what it does. They don't add hp but they certainly unleash what's hidden because of hyundai being afraid to allow 100% throttle.
You can get these for under 50 bucks if you look. I don't want to step on any vendors toes by saying where, but I ordered mine for 55 dollars shipped. This works incredibly well with my SFR ECU and TCU tune. In my opinion this makes the car accelerate how it should have been from the factory. Only other thing i have done is solo performance exhaust added to mods above.

The car is perfect for me now. If you don't think you will like the booster, or think after you had it for a few days you hate it...box it up and send it back. Nothing lost but 5 bucks flat shipping to return it through USPS.

Hey, I am with you. The Sprint Booster fixed my throttle delay and i love the way my 5.0 accelerates now.
Last night me and few other cars was having some late night fun on an empty 5 lane highway. Late model BMW M3, Chevy SS, and a Modded out late model VW Passat. The cars was moving pretty quick on the highway so I jump in on a long open stretch highway. I was cruising about 70mph when they was approaching from the rear. Well, I put the car in Sport mode with the Sprint Booster set to Race 9. I only had to press the gas pedal halfway and then I was hitting 90mph in a flash. Then I went all out to 135mph in less than 10 seconds it seemed. Damn, I have never just let it rip like that before at highway speeds. The only car that was sticking with me was the BMW M3 which shot pass me when I started to slowed down to the speed limit.

The other two cars cars caught up and slowed down a bit to take a look at my car(probably to see what it was) and then sped off. To make matter worst, the Genesis was still pulling strong at 135mph but i decided that 135 mph was fast enough for my taste. Before installing the Sprint booster the car seem to struggle a bit pass 130 mph on a very long stretch of highway the last time I tried to test the top speed. Last night, it hit 135 mph in a very short time. The Sprint booster just changed the nature of the Genesis and make it behave like a true V8 powered Sport Sedan. Just the way I like it.

 

[Suburbazine]

I wished that I actually knew how the Sprint Booster works and what it really adjust on the Genesis throttle by wire system. Myself and others have speculated on throttle plate openings, kick-down switches, etc., however all I really know is that the engine respond quicker with the Sprint Booster than without it like the other cars tested on YouTube videos.

I give up creating theories and assumptions about how the device increase the throttle response in my engine. I am not an automotive engineer, so I give up trying to understand how this device actually does what it does. All I know is that the Sprint Booster works as advertised. Good enough for me.

What it would be doing and what you would be feeling is the scaling from 0-70% pedal input is boosted to get you into the 70-92% range which would give you a more linear or aggressive pedal feel. The stock throttle mapping dampens the 0-70% as you can see in the video. That said, any other claims won't be true...although if someone can convince Sprint Booster to send me a review unit (or a return guarantee) I wouldn't mind being enlightened.

 

[MG8]

i had sprint booster before my tune and all can say it worked did what it said .

 

[carguy75]

What it would be doing and what you would be feeling is the scaling from 0-70% pedal input is boosted to get you into the 70-92% range which would give you a more linear or aggressive pedal feel. The stock throttle mapping dampens the 0-70% as you can see in the video. That said, any other claims won't be true...although if someone can convince Sprint Booster to send me a review unit (or a return guarantee) I wouldn't mind being enlightened.

Hey, whatever trick the Sprint Booster device uses to reduce the sluggish throttle response is good with me and works perfectly. I like the "linear" pedal feel for occasional spirited driving with the Sprint Booster, however I can see that it would get annoying for most drivers if the throttle was set that way from the factory even in Sport mode. The response is too aggressive and touchy for everyday driving in my opinion. Genesis would have to set that as a Race/Track mode. I only use the Sprint Booster in Race mode level 9 to show off and dust unsuspecting quick cars at merging lanes going unto the highway.

If you try a Sprint Booster I bet you would not return it.

 

[dellisor]

So far every person i have ever heard bashing it , has not installed one on their vehicle, i installed it and love it

 

[carguy75]

So far every person i have ever heard bashing it , has not installed one on their vehicle, i installed it and love it

That is funny since I noticed the same thing as well. The Sprint Boosters owners enjoy the product's actual performance and the non-owners bash it based on assumptions. Much the same for any engine modification topic on a forum.

 

[Bourbonncigars]

So far every person i have ever heard bashing it , has not installed one on their vehicle, i installed it and love it

Same thing on every car forum.

 

[Kraig Wilkinson]

That is funny since I noticed the same thing as well. The Sprint Boosters owners enjoy the product's actual performance and the non-owners bash it based on assumptions. Much the same for any engine modification topic on a forum.

I am very interested in purchasing one sprint booster. I still have warranty on my car. If I were to use one on my 15 5.0 and had to take it to dealer for repair can they see that I were using something like this on the car? Does the ECM show that something like that was hooked up to car?

 

[G-606637]

Is this available for the 3.8V6 in the 2015-2016 MY?

Yes it’s same as the 5.0 one because peddle signal is same

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[AgentSmith007]

So far every person i have ever heard bashing it , has not installed one on their vehicle, i installed it and love it

That is funny since I noticed the same thing as well. The Sprint Boosters owners enjoy the product's actual performance and the non-owners bash it based on assumptions.

Absolute truth to both statements.

 

[AgentSmith007]

I am very interested in purchasing one sprint booster. I still have warranty on my car. If I were to use one on my 15 5.0 and had to take it to dealer for repair can they see that I were using something like this on the car? Does the ECM show that something like that was hooked up to car?

I am not a car mechanic, so don't take my word for it.

In my 2011 4.6 (and it is probably the same for 2015) SprintBooster is plugged into connector behind accelerator pedal so (I assume) ECM is not altered at all. Also, you can turn SprintnBooster off.

Again, I may be wrong.

 

[Kraig Wilkinson]

I am not a car mechanic, so don't take my word for it.

In my 2011 4.6 (and it is probably the same for 2015) SprintBooster is plugged into connector behind accelerator pedal so (I assume) ECM is not altered at all. Also, you can turn SprintnBooster off.

Again, I may be wrong.

Well that seems easy. Thanks

 

[MG8]

I am very interested in purchasing one sprint booster. I still have warranty on my car. If I were to use one on my 15 5.0 and had to take it to dealer for repair can they see that I were using something like this on the car? Does the ECM show that something like that was hooked up to car?

NO they will not, and it will be tucked under where the pedal . but no on if it will be detected on ecu.

 

[Kraig Wilkinson]

NO they will not, and it will be tucked under where the pedal . but no on if it will be detected on ecu.

Thanks for the input fellas much appreciated.

 

[Suburbazine]

I am very interested in purchasing one sprint booster. I still have warranty on my car. If I were to use one on my 15 5.0 and had to take it to dealer for repair can they see that I were using something like this on the car? Does the ECM show that something like that was hooked up to car?

It won’t be detectable by the ECU, at least not as a code or flag. The only way they would know it is there would be physical inspection of the pedal harness. It won’t void the warranty either since no permanent modifications were made. The only way you would get a code is if you get a defective one or turn the car on while something is unplugged.

 

[Kraig Wilkinson]

It won’t be detectable by the ECU, at least not as a code or flag. The only way they would know it is there would be physical inspection of the pedal harness. It won’t void the warranty either since no permanent modifications were made. The only way you would get a code is if you get a defective one or turn the car on while something is unplugged.

Good to know. Thanks for your input Suburbazine! I truly appreciate it.

 

[carguy75]

I am very interested in purchasing one sprint booster. I still have warranty on my car. If I were to use one on my 15 5.0 and had to take it to dealer for repair can they see that I were using something like this on the car? Does the ECM show that something like that was hooked up to car?

The Sprint Booster unit can also be easily removed if you are taking the car in for a service if you do not want to risk the chance of having the technicians noticing it is connected to the gas pedal. The ECM does not read the Sprint Booster signal boosting as a foreign processing occurrence , however it may look like you have had a heavy foot on the gas pedal if the dealership does check a log of the gas pedal reading for any reason I suppose.

Unfortunately, adding any performance device can jeopardize your warranty coverage it somehow fails and causes damage to the module(gas pedal) it is connected to if the dealership discovered that it was the cause of the failure. Hence, why I did not go with a cheaper less proven/reliable pedal boosting device.

 

[Kraig Wilkinson]

The Sprint Booster unit can also be easily removed if you are taking the car in for a service if you do not want to risk the chance of having the technicians noticing it is connected to the gas pedal. The ECM does not read the Sprint Booster signal boosting as a foreign processing occurrence , however it may look like you have had a heavy foot on the gas pedal if the dealership does check a log of the gas pedal reading for any reason I suppose.

Unfortunately, adding any performance device can jeopardize your warranty coverage it somehow fails and causes damage to the module(gas pedal) it is connected to if the dealership discovered that it was the cause of the failure. Hence, why I did not go with a cheaper less proven/reliable pedal boosting device.

Very good point Carguy75. I appreciate your input along with the rest of the members that belong to the forum. Good group of folks!

 

[Suburbazine]

The ECM does not read the Sprint Booster signal boosting as a foreign processing occurrence , however it may look like you have had a heavy foot on the gas pedal if the dealership does check a log of the gas pedal reading for any reason I suppose.

Fortunately, there is no pedal recording log that the dealership can access. The "black box" system that crash investigators can access will only show the last 120 seconds or so of actions.