Bolt on miss for horsepower increase 3 gen

hi. Have a 4 cylinder SR5 2017 and love it except I feel like 20 more horses would hit some sweet spot for me. What about headers? Or cat back exhaust or both....Will it get me 20 hp?

 

no.

 

I got about 7 with a K&N cold air intake

 

How much hp does the LCE header give?
And what about removing/cutting out some secondary air filter....does that really give more honest?

 

No


You can’t “bolt on” more HP....

Headers, exhaust, intake, etc. are all what are called “supporting mods”..... the only way an exhaust or an intake is going to add power, is if they are so poorly designed that they are actually robbing the motor of power.... In our case, these motors are well designed and pretty efficient from the factory

The only way you can add more power to a NA engine is to bore it out for larger pistons, adding forced induction, or adding nitrous.

 

Mind uploading those dyno results?

 

The ONLY way to make more HP is to get more air and more fuel into the motor....

An exhaust and intake are not going to put more air or fuel into the motor.... they will allow the motor get more air if it needs it.... but they won’t put it there.

Unless you do motor mods, you’re not making HP

Think of it like breathing through a straw and trying to run 100yds.....well if you’re breathing through a straw, you’re only gonna be able to run 20 yds before you pass out.

Now instead of a straw, you are breathing through a piece of 2” pvc..... you can breath easily and you can run the 100yds no problem.

Now instead of 2”.. you are breathing through 3” pvc..... you can breath just as easily as the 2”.....and you run the 100yds in the same time.


That’s what bolting on intakes and exhausts does..... it’s like breathing between 2” and 3” pipe...... you are already breathing fine through the 2”..... so you see no performance benefit going to the 3”

 

That's the worst explanation you can give. "They will allow the motor to get more air if it needs it"- exactly the point of an intake on any vehicle.. You pull more air via a hi flow filter, and generally cooler air if the intake tube is smooth and designed to pull air from the wheel well (much like the factory airbox does). When you add an intake, you're allowing more airflow in as needed. The ECU sees more air, and adds more fuel. This makes more power. Exhausts also add power by increasing the scavenging effect, as well as allowing more free flow (less backpressure= more power at higher RPM).

@Pippin65
Ignore literally everything M-Cameron said...trust me. If you want real useful information, here you go.
The best bolt-on mod for the money is the LCE or Doug Thorley header, followed by an exhaust and intake. To make the most out of those mods, you'll need to wait until @OVTune releases a stable tune for your platform.
You can simply swap out your muffler and have a Magnaflow or Flowmaster 50 series welded in for cheap at a reputable exhaust shop.

Once you've been around long enough, you'll know who Tooter is and how he's been the biggest asset to knowing the power levels with mods for the 2.7l. With an intake and LCE header (still stock exhaust from the cat-back), the gains on 87oct (Stock tuning) were about 26hp/19tq, referenced in this post. If you swap mufflers, expect about another 4-5hp on that. Add an @OVTune to that mix, and you've got yourself a healthy upgrade, while running a few different octane levels (89-93 depending on where you live).

If you want to get crazy, we can talk forced induction...Those are surefire ways to get some good numbers! I boosted my 2013 2.7l back in January, and the turbo just sits so pretty...

 

Bahahaha, this is your supporting documentation?

Hook..line..and sinker.

 

YOUR dyno results. For your truck.

 

i noticed you conveniently clipped off the second half of that post where i explained how you are wrong...

the motor isnt seeing more air...its not going to just MAKE MORE POWER....its not tuned that way...

the only way the motor is going to "see more air" is if you force air into it (ala, supercharger or turbo)...or if you add larger pistons(allowing the motor to draw more air in)....

you can buy into the hype all you want......your bolt ons arent giving you any more HP......if that were true....every Honda civic would be rolling around with 300HP they gained from their CAI and fart cannons.


i have several degrees in engineering.....and have spent more time tuning 4 bangers than you have.......if you want me to go into detain on how youre wrong, ide be happy to oblige

but by all means, bolt away....im sure youre making mad power with that exhaust kit you put on.

 

No no no. Not their sales pitch. Your truck's actual Dyno results.

 

Do people really think that in the age of scratching and clawing for fractions of MPG numbers Toyota would let a car leave the factory with restrictive intake/exhaust components?

 

@moe2o4 added the LCE header, with before and after dump tests showing an improvement.

 

b-bu-but K&N swore to me the factory components were designed by idiots.....and ide make more HP with their stuff

 

Did you do a before and after dyno pull?

 

Recent studies show that many many many people believe all sorts of absurd bullshit even if there is clear basis in research and fact to disprove it.

So, yeah.

 

He’s actually got a turbocharged 4 banger that he posted... I’d love to see some of your custom turbo setups... I’m also curious as to your “multiple engineering degrees” as most with those credentials don’t feel the need to throw that out there to back their argument they just provide actual information and results..
-Jack BSEE oh hey look what i did there