I’ve lost a MPG when driving regular speeds. The idea that you can get better gas mileage by dumping more fuel into the engine is laughable. But...it’s effective. Certainly more pick up and acceleration. If someone wanted to push a suit for the ‘improved gas mileage’ claim, they could.

When I want to save a buck or two at the pump, I turn off the device. But seriously, the owner (Jason I think?) should stop making improved mpg claims. The performance is enough to sell it. He’s just opening himself up for problems. (Class action attorney speaking here)


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Just echoing the feedback that some customers have given me. I will go back through the other pages of posts and will quote what people that divided their mileage out have said and I’ll post the results. I just thought it was cool. Again like I said, this is not the reason to buy this this, but there is feedback saying that I’m just echoing what I’ve been told.

Burtman Industries Sprint Booster, On Sale right now for T4r.org members, ships 2nd day air and 5 year warranty!

Jason am I correct in assuming this will work with an 04 GX470 as well?

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GX470 Sprint Booster at Burtman Industries on sale Use this to order for GX

And 4Runner unit below.

Burtman Industries Sprint Booster, On Sale right now for T4r.org members, ships 2nd day air and 5 year warranty!

You need to stop parroting them because they are false claims. It's in their heads. Until you have proof positive that it provides a jump in MPG, it's false advertising regardless of customer claims.

I have seen ZERO gas mileage improvements due to the Sprint Booster. I didn't buy it hoping or thinking that it would make a difference. I bought it purely for the improved throttle response and the size.

Yup. Agreed 100%. His claims/parroting are doing the opposite for me, despite being happy with the performance enhancement. Almost wanna dump the thing out of principle as he continues to push the false claims.


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When more than a few customers tell me something, I then regurgitate it. I will dig through my emails again and try to find the customers and ask them to post in this thread. I have no idea if it was v6/v8 2wd/4wd, city/highway. When someone orders, I send them to this forum and ask them to post a review, of course not everyone does this. There's also other areas in this forum where members mentioned it, then I started having people call me saying they bought it for that reason. I've always said that's not the reason to buy it.
THIS IS NOT the reason to buy this unit, the issue is the throttle delay and this fixes it. Many like it especially after adding a lift or bigger tires as it makes it feel peppier and the delay is gone. I don't need to make up false claims to sell the part, it sells itself and is the best selling part I've ever had. It's inexpensive and people enjoy it and usually are so happy with it, they want to buy something else. When a customer tells me it's helped them in another way that I didn't know about, I then mentioned it. Also, if someone orders this and isn't impressed, they can return it. I've sold double the amount of othese for the 5th gen and they are hundreds on people throughout this forum that have it installed. That is the truth.

Burtman Industries Sprint Booster, On Sale right now for T4r.org members, ships 2nd day air and 5 year warranty!

Below are a few customers with 4th gens. When I have more time I will private message all of them and ask them to comment in this same thread. Why not.

I posted this below in 2018... And after selling this part for over 10 years I've had some people mention getting a bump in mileage, but it will be interesting to see the feedback if they reply in here after I message them, then we can get a broader baseline of owners.

Jason, I don’t think the issue is the effectiveness of your product. I’m a huge fan myself. However, some of us, (myself included) aren’t a huge fan when you regurgitate claims of improved gas mileage, when it’s simply not true. That’s like saying McDonalds fries are healthy because they’re potatoes. Lay off pushing the mileage improvement and I think you’d have the FULL support of the forums.


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Just ordered one and can't wait to try it out!

I didn't buy my runner for gas mileage I have another car for that. If booster gives me more instant power for crawling I'll keep it.

be sure to come back afterwards with your thoughts. More in stock again too.

Burtman Industries Sprint Booster, On Sale right now for T4r.org members, ships 2nd day air and 5 year warranty!

Reached out to Jason with some questions via text and he was very quick to reply. Ordered it and can’t wait to get it!

I would speculate that any change in fuel economy comes from how the throttle pedal and the throttle body move together due to the change in response curve.

On the OEM curve, it's hard to maintain a precise speed, I've often found that I slow slightly, then have to give it slightly more throttle to speed back up, and then I let out slightly when I reach the speed a meant to be at. Repeat until destination. So my speed is varying between 57-63km/hr. Or 98-104. Etc.

It's something that's always annoyed me about the drive by wire setup in this truck. The constant speeding up and slowing down cycle from the lack of resolution in the throttle response would definitely use more fuel, in theory... but I think in practice it's lost in the aerodynamics of a brick and the thirsty V8.

Anyway, the Spring Booster has eliminated this effect and the truck now drives more like a throttle cable equipped motor: Direct line between the pedal and the throttle body. Maintaining any particular speed is super easy. And school zones are no problem: 30km/hr is easy to hold. I often found I'd have to gear down to 2nd to hold 30... being in -D-, the truck wanted to slow down or speed up readily.

The Sport and Race functions don't play well with the IPT valve body mod. I'm confident the truck is slower in Sport/Race because the transmission spends so much time downshifting and then waiting for the V8 to spin up and go... if it just stayed in whatever gear it was in and put power down we'd be moving faster already.

I use Green-3, always, just to have the linear relationship between throttle pedal and throttle body. It's a pretty minor change, but it really makes the truck a lot nicer to drive.

Was it worth it for the money? No, probably not. One must be a real stickler for the details to appreciate it. It does precisely what I bought it for: simulate a cable actuated throttle body. Buying it for any other reason will lead to disappointment.

It also is able to significantly reduce the VSC's throttle stealing ways. When the truck yaws sideways during wheel slip, normally it takes about an EON to get throttle control back. The Sprint Booster reduces that to a second or two. Power comes back on pretty weird and it feels like there's a war going on over control of the throttle body... but at least you can go a lot sooner. Certainly a nice fringe benefit.

@Izzy_d4ngeR

Thanks for the post. I try to send everyone to this forum after they order and ask them to give their thoughts. Appreciated. Did you install it yet?

Burtman Industries Sprint Booster, On Sale right now for T4r.org members, ships 2nd day air and 5 year warranty!

Happy to help ya out. This is now my best selling item hands down.

Burtman Industries Sprint Booster, ships 2nd day air and 5 year warranty!