Does a new exhaust really add Horsepower

If I were going to add a new exhaust and new intake, does it actually make a difference and if so, what is the best verified brand for doing so?

 

Subbed because in this thread we get to the bottom of this once and for all

 

If you believe that I have a Bridge For Sale, it's all Snake Oil. Supercharger is the only way. You already have a Cold Air Intake, and if you add an aftermarket one you will get nothing but noise. Exhaust nothing but new noise. Save your money and put it into something you will get something out of.

 

No you won't as this is discussed all the time. You get no performance gains, no mpg gains, no hp gains. Nothing but noise noise noise

 

Yeah but that’s not what someone else might say....

 

so id this is not the route to go, what can I do to increase performance, this 3.5 sucks compared to my older 4.0 tacoma

 

Then I'll say it too. They don't do anything but make noise.

 

Wait for the SC to come out

 

Nothing besides buying a different truck.

 

Yes you do. Minimal, if actually designed properly for it through testing.

Now if your truck had FI. The gains could be fairly noticeable.

 

Having worked for the largest aftermarket exhaust manufacturer in the us I can say that is not true.

A better breathing exhaust whether from down pipe or cat back can free up some hp. Will it be enough to feel. No. Can the combination of sound and moved power output make you think it has made a bigger difference. Yes.

Depending on models exhaust and how the new exhaust is made (ie x or y pipes) there’s always some power to be made. While peak output might barely change, what often does is somewhere in the total rpm range it can make more power over stock.

Modern exhausts however are fairly good flowing so don’t expect much net gains compared to say an 80’s stock exhaust.

 

I have long tube headers. Cat delete. Customs muffler, crossover. Had a K&N air intake.

Gained 16HP total (verified on a dynojet)

Ditched the K&N so I could enjoy my truck and stereo again.

Added a URD maf calibrator. Accelerate is smoother now. But MPGs lower.

 

Thanks for saying it too

 

what about on the butt dyno?

 

....gtfo with your truth. This forum is no place for that nor will it be tolerated.

 

Meh. Throttle RESPONSE might be better. But I drive an automatic.... so it engages if and when it pleases.

 

This! Now someone post screen shots of screen shots of dyno results!

 

everytime I go over 3k rpm, I go into warp mode