Has anyone actually increased HP with a product?

I know that tuners have been in discussions but turned into a MPG debate. My Tundra already gets terrible MPG’s and now since a lift and bigger wheels and tires, it’s about 3 MPG worse. I couldn’t care any less about the MPG, I am wanting more HP without spending 10k plus for a supercharger. Has anyone found a product that actually works without spending north of 5k?

 

What size tires? Changing the gear ratio in the differentials is probably your best bet.

 

35x11.5x20

 

Yeag Yeah, cold air intake.+ 00000 Horsepower, just a sucker and his $ .....fools

 

You want to increase horsepower buy a Harrop....

 

you can spend $500 and get a proper tune through many tuners with HPTuners or other software. THOSE tunes are well worth the money, even on non-modified stock engines!

 

No. Probably not once in the history of these scams has one actually worked.

Almost like the people who spend millions designing powertrains, know what they are doing and don't just leave HP out there to be picked up with cheap aftermarket parts.

 

A blower is the only true answer

everything is a half measure

 

x2...

 

My race exhaust with long tube headers is good for 49hp 89tq and .9 seconds in the 1/8 mile.

the stock exhaust is very restrictive, on purpose to keep the catalytic converters hot enough to do their job.

 

A tune and exhaust are tried and true power adders on these vehicles. But you don’t need more power. You need more leverage and that comes from gearing down to 4.88’s or 5.29’s. Do the gears and see what you think. Then go to a tune if you think you actually want more power.

 

Long tube headers with a tune is my vote. Still not cheap, but cheaper than a supercharger

 

This is what scares me about doing a tune. Can they get more power - I’m sure they can. Is there such a thing as an “undetectable” tune? I doubt it.

https://www.yahoo.com/autos/2023-dodge-challenger-hellcat-tune-144800113.html

 

Has it been said that n/a tunes only gain power at the top end

because it needs to be said

 

I might be getting old but I’ll throw this out there…

When I was a kid we were towing horse trailers with 240ish HP chevy trucks. It was plenty.

These days chasing Hp, in an N/A gas truck seems like a fools errand. You’re going to take a hit in efficiency (MPG) for minimal gains. I mean, you’re running around with 385hp and 400ftlbs as it stands. How much more do you need? Even if you added 30-40hp you’re probably not going to notice the difference in a 3 ton truck. If it’s a lot more, a diesel will fit the bill better and get better mileage than a gasser with a supercharger.

just my .02 cents.


Now get off my lawn you damned teenager! *shakes fist in the air.

 

Nitrous!….. or look for a used supercharger for about half price.

 

35's? Gears fer sure. 5.29's are the right answer for that tire size, without a doubt.
Want to make those tires and gears work nicely with the computer? You will need a tuner.

I picked up an HP Tuners MPVI3 and had a local tuning shop do what they could on the engine. As we know, there is not much power to be found in a N/A Tundra, so I wasn't looking for big numbers gains. I was looking for better drivability.

We achieved only +7HP at the same peak power RPM as stock, but picked up +20# torque, with a peak that is 900 RPM LOWER than stock. My towing performance is considerably better.

Making the truck realize that you have big tires and low gears will change the way it works.

An HP Tuner is not cheap. You're looking at $400 for the unit, $200 in credits for your vehicle, and whatever you pay a tuner to make it happen. If you pay for the time, make sure you leave with a copy of your OEM tune and every tune they make so you can tweak things later. Example, I am currently farting around with my TCC release point in 6th gear to reduce the frequent unlocking on small hills while using cruise control. I think it is worth owning the tuner and the tunes.


And when you eventually go with a supercharger, you'll need that tuner again...

 

OTT posted a dyno chart over on Tacoworld that I can't seem to find atm, but they picked up about 20hp on a completely stock N/A Tundra. But what you're mostly paying for on an N/A tune is the transmission tuning. Messing with the shift schedules and overall making the feel of the truck driving a more enjoyable experience.

 

I concur on the transmission part

I had my trans finagled with, via HPT, when I had it on the dyno last

it made a difference

 

I was gonna say long tube headers. Figures you're the one to beat me to the punch.

 

If this is the case I would steer clear of OVT. I was told there is nothing he could do for regular unleaded fuel so you have to get a tune for the Premium or Mid-grade. He also said there is nothing he can do if the cruise control is on. Last thing he told me he could not do was tune my truck with the weird combination of 35’s and 5.29’s. When I push the button to activate the tune (it is stock unless I press the tune button a.k.a. Tow/Haul) and let’s say I am on an on-ramp to a highway. When I accelerate to enter the highway and if it downshifts and gets into 4th gear I can let off the gas and cost in 4th gear with the engine screaming. The MPH’s go down fast but it holds 4th. That just pisses me off each time. That was a lot of money to find out they cannot do something AFTER you discussed what is going to be done and pay.

Doubt I ever pay for a Tune again. Sad, I really need this fixed

 

So if you tune a car you’re changing the factory fuel map and ignition timing. If you tune it for higher grade fuel you can increase timing, thus more power. You can lean it out a bit if you’re so inclined and again increase your HP. So it sounds like the tuner was pretty honest with you about the limitations.

 

I should add that we only achieved +7 HP with 87 octane. More could have been achieved via timing if we tuned for 92 octane, but I was so much more interested in the huge drivability improvements than the small HP gain.

To be honest, I was pretty impressed that it put 324 hp to the ground on 34” tires…. Probably woulda been in the 335 range with OEM tires. Figured there’s be more parasitic loss than that.

 

Stickers are good for 5+ right?

 

+5 each, correct.

 

That's quite good. Mine dyno'd stock @ 282hp to the wheels. Mustang dyno. all stock 1794 wheels & susp.

 

Considering the plural nature of the items, I'll say add 9.25hp to your sum total. these things contribute more than the sum of their parts.

 

B-but I have to tow a 40' trailer with a half-ton, with better mileage AND faster than anyone else. Right?

 

I think this is the only way to really get better performance out of these trucks, a custom tune done via this route. You'll pay for it, but it seems like a much better option than a tuner with preset configurations like D3 that doesn't actually take into account the specifics of your truck and needs.

 

I was impressed. Truck has 129K miles, but is well maintained and not abused. Every fluid is changed at recommended intervals and the plugs were replaced at 100K.

Stock tune:
317.8 hp @ 5,450 rpm
345.3 lb-ft @ 3,800 rpm

After tuning (10th run):
324.7 hp @ 5,450 rpm
362.6 lb-ft @ 2,950 rpm

I do have 5.29’s, so that may have helped with the numbers. Kinda wish we would have done a 93 octane tune to see how much more I would gain.