Anyone ever tried this or have any info? Dyno? Experience? Snake oil?

It does have a 30day guarantee, so seems more credible. Thoughts guy's?

https://topspeedauto.com/sprint-boos...UaAsY_EALw_wcB

 

Snake oil.
It doesn't and cannot possibly increase power, torque or performance, all it does is change the throttle position signal to the ECU so that where for example you got 50% throttle from pushing the go pedal down 1" you now get 75% throttle from 1" of go pedal travel and so on.
Pushing the go pedal to the metal makes zero difference.

 

I put a Sprint Booster on my Lambo. I like it. It makes the throttle response more like a cable driven throttle instead of the programmed throttle delay from the factory.

Since my Lambo is one of the rare 6-speed gated manuals, it helps with rev matching and double clutching to have instant throttle response. My other 2 fun cars are manuals with cable driven throttles, so I want them all to have that same throttle response.

Eliminating the delay in the throttle opening up will make the car slightly faster, so that part is not bogus despite the rant above.

Do I want or need it for my daily drivers? Nah

 

The Dynamic button, does the same thing already. No charge.

 

So dynamic button controls the throttle response? I know Sport mode on the shifter changes my shift points. Thanks for the heads up

 

I can help you with a proper ecu tune. The difference between stock and tuned 4.2 is night and day

 

what tune makes night and day diferencies in car equiped with 4.2sc?

 

Dyno developed tune. I spend around a year or so testing and developing. See my signature or check out my threads. I'm making aprox 511 crank hp, this as much as 5.0 cars and it's the highest Dyno as far as I know out of 4.2 sc with basic bolt ons. My tune is custom adjusted for any modification that you might have or even if it's completely stock.
Pm me we can discuss

 

OK, I understand , but what i will do with those 511 horses? Stare in dyno chart?

its funny,how diferent we understand tune. but both of 4.2SC and 5.0Sc cars is overpovered. 4.2SC is even non drivable- its just have TOO MUCH power. 200+HP to one wheel on RWD car is just freaking too much anywhere up to 50km/h. same goes for 5.0SC friend have 625HP XFR. the only joy i got from F-type and XFR is blinkink DSC light or smoke from tyres. I would like to buy AWD tune from you. I am fine with stock 4.2sc horses and even more fine with its supercharger generated heat. I just need diferent gearbox from zf(AWD) and redone front axle. probably most easiest way adapt parts from F-Type R AWD?

 

Look at my threads you will see Dyno charts. If you think that 4.2sc stock is overpowered I don't know what your looking for ...

 

I'm looking for traction. its thing which you need when you put out your car from garage, dyno and... drive it to street.. have you eve tried U turn or drive in wet roads with V8SC?

and yes ,any car above 200HP per wheel is seriuosly overpowered, unless you accelerate from 100 to 200km/h. best modification for 4.2SC car is LSD. next beest modification for 4.2SC car after LSD is AWD.

 

I can do 3.8 0-60 perfect start on street or track ,street tires and stock differential, so not bad for traction. This is puting down 432 to the wheels vs stock cars that put down 350. In drag racing my 60ft is not worse than xkr cars with aftermarket LSD so I haven't seen the point in getting one, but of course on turns LSD will be better I'm sure
Maybe look into better and wider tires ? How the heck were you planning to do awd conversion ?

 

impressive numbers , but small family hatchbacks these days does faster with 2 times less fuel. for example mercedes A45. Mind you I drive in the streets, no drags. I jsut want to do proper U turn without engaging DSC system like crazy. I have LSD in it. and I have AWD XF 3.0SC. it noa a big problem for me mount whole subframe and front from 3.0 XF AWD together with ZF gearbx and shafts. problems is to reprogram car -that 4.2sc engine would "talk" with new gearbox and new gearbox would talk with rest of 20 ECu on in the car. that is reall problems with jags- electronic tune. how muc it would cost to rewrite software?

 

Not saying it can't be done , but probably a lot more work than it's worth to do what you want. I work mainly with the ECU parameters , haven't done much with transmissions , so that would be a whole new chapter.
Of course awd is the king of traction no question there. My friend has a stock rs3 and that thing is amazingly fast for little displacement and less power, launch control on newer cars also helps a bit.

 

My two cents: I've got dual pulleys and tune and I can tell you the Pedal Commander (Sprint Boost competitor) actually gives me the most smiles per mile. I absolutely love it and will never drive another car without it installed. It does not add any hp or torque to your car, all it does is give you easier access to the power.

I forgot to turn it off once before handing the car over to a Firestone tech and he almost went through the wall.

 

Awesome, message me if you want with some details. I have the 4.2 Supercharged and just installed a 5 row racing radiator, 2.5" exhaust and am doing my SC pulley my next day off (in about 2 weeks) with a mechanic friend of mine. I'll even see if I can take some install pics of that to share if anyone needs help.

But a ECU tune has been on my radar for a little bit and going to be a christmas present to myself I think �� lol so I'm very interested!

 

To each their own but to me that is a complete waste of money as it does not make a car any faster at all it does is changes the throttle response which can easily be done in 2 minutes in a tune anyway. In the real tune you will actually be gaining power with that throttle response.

 

Plus the level of response is fully customizable on the fly from the phone app if you purchase the bluetooth version. It may not increase actual power but it sure is a lot of fun!

 

So is the dynamic button a throttle response button on the 09 xf? Just to clarify...

 

Among several other things, yes.