Hey guys. Just wondering how much horsepower adds to the car. I have both TRD Exhaust and TRD Intake in the car.
Just want the numbers and nothing more.

Thanks!

 

Um... maybe 6-8 whp total. Almost all from the intake. The exhaust does next to nothing. Definitely under 10 whp though.

 

Oh ok. So not to the wheels is prolly 170. How do you know the exhaust doesnt add HP? TRD says it does on their site. Not saying you're wrong. Just to understand. And thanks.

 

If you have a manual, you're probably around 150 to the wheels. Maybe. Auto is a little less.

The exhaust doesn't add much of anything (other than a cool sound) because it's not really the bottleneck of power. Technically it is a bit more free-flowing then the OEM, but it's only an axleback.

 

I think if you change the exhaust from header all the way to muffle, then that would make a different in term of horse power.

 

Yup.. you'll get a bit more if you do a full exhaust. Like WeaponR/MMW header, custom midpipe and some axleback. Would probably get you 10-15 whp... if you're lucky.

 

They are correct if you have a "STRAIGHT THROUGH" aftermarket exhaust that is mandrel bent you should get 10-15 Whp. the TRD Intake will get you maybe at most 5.

_______

 

you mean a cat back?

cat backs are a bit more expensive and can be LOUD, but they open up the exhaust system for a relatively efficient free flowing design. the TRD axle back doesn't do much. for one, it's very simply an axle back. it only opens up the pipes a minimal amount. secondly, it's not a straight through design. for example, my megan drift spec is more straight pipe.

 

Sounds like simply put about 170 horsepower with both. Thanks then to all.

 

TRD Exhaust is restrictive maybe 2 hp at most...TRD Intake maybe 5-7 hp...

______

 

Wait... what? No... would be maybe 150 at the wheels with both. Possibly 170 at the crank.

 

Yup at the crank.

 

i have an ebay generic cai, megan headers and a trd axleback. i saw about 12-13 hp boost.and a 18pound torque gain.

my car sounds bad **** and these figures are from a dynojet.

in total it cost me about 400 bucks....

 

^ aren't dynojets supposed to be pretty inaccurate? That's what I've heard about those things. Forgot the margin of error..not saying you are lying or it's completely wrong or something just asking a question.

And I garauntee you most of that gain you have (like 80% or more of it) is from your header. Take off the intake and axle back and the numbers will probably still be about the same minues a couple horses.

 

guarantee's aside

realistically my headers are 2-1's not 4-1's so they aren't that great, plus they are the old versions......
so your saying that the headers gave me 10 hp? around 80% really and you believe that?

so really it couldn't be a combo of all of the above working decently if not well altogether? i would have
guessed 5hp for the headers 4hp for the exhaust and 3hp for the intake.

for an engine to exhaust gasses it need to be able to intake air. the s-pipe while important can help. as well as
the headers as the baffling is no longer restricting flow..

but....without a decent exhaust your engine cant breath out well creating back pressure. that's why people
who buy megan headers and run bad/incompatible would be a better word exhaust systems get a raspy poppy exhaust.

and.... without a decent intake (even a no name cai off ebay) those items cant be used to their fullest
because the engine cant intake enough air to properly burn and exhaust fuel gasses.


it ok though no harm or anything.....

on the dyno topic, there are no true figure dyno's, every brand of dyno has its differences and in some instances
same brands figure in differently on the same car unmodified.

but the dynojet is an inertia based dyno and usually the best as well as cheapest method for obtaining the
most accurate "real world" results in dyno testing for racing applications. and can simulate the
conditions created when running an engine under load, in many ways giving more accurate and
repeatable results.

the reason people say the figures seem off is because between the brands of dynos the hp figures well
can be drastic. the dynojets consistently give you repeatable results where brake dynonometers can
be drastically varied in results in the same brand even run after run.

some people leave feeling their 450hp car is a pile of crap because the dyno read them at 300 or even 250.

which may or may not be accurate considering the variance between brake dyno's

so what im getting at is that even though the source your siting may not like dynojets they have a huge
reliability rating as far as tuning to tuning so you really get to see what your mods do for your car.

so really the disadvantage of the inertia dyno vs brake dyno's is you can only do a wide open throttle test.
basically flooring it throught the rpm range.

but still reliable even when you decide to use a dynojet in a different state.

fyi do not forget to take into account atmospheric conditions, ie humidity, air charge temp, blah blah blah.

so yes i would say that the dyno jet reading was accurate . based on the factory rating of 140hp at the wheels
i would say the components i have installed would amount to about 12+ hp gains. but realistically even when
you go for more concrete fact based evidence (such as a dyno run) someone has to chime in.

but realistically always debatable and only my opinion.

 

I know what you mean about the atmospheric bit..I just read a lot of mixed things about dyno jets

And yes I believe most of that hp came from your header..I've seen plenty of evidence to support this. If you don't believe me fine. I don't expect you to.

I highly doubt the TRD exhaust gave you 4hp..it's basically a smaller stock muffler with slightly bigger piping/tip.

 

Meh..does it matter how much power you are creating off of these simple bolt ons? Just be happy with the new deeper sound you are producing with the intake and exhaust. You are never gonna create enough power with this set up to even feel a difference. Opening a jar of pickles will probably create more hp and tq then your intake/exhaust combo.

 

Time to put some slap into this thread.

An intake and axleback do NEXT TO NOTHING. Youll be lucky to see a 5-6 hp gain from the intake, and a 2-3 hp gain from the axleback. These mods are mainly just for sound. If anything youll feel somewhat better throttle response, but its nothing major. Your going to feel like your going faster cuz you can hear the car trying to go. Also, on a dynojet it overthrows the numbers quite a bit. if you want to make yourself feel good then go on a dynojet. Alien, most of the power that your car showed IS FROM THE HEADER. The TRD axleback is a joke if you want performance out of it. It's just a redesigned stock that makes more noise.

Anything else?

 

^ tCtCtC..couldn't have said it any better

 

look kid i applaud your very cavalier attitude and very interestingly
but vomitesque attempt to try and prove a point you think you may have had.

and im glad to know you think you understand the inner workings of a
muffler. your amazing ability just astounds even the smallest of minds.

namely XIEmperorIX

probably not...... just more awesome crap from some mouthy little
rich kid.

so really and i laugh at this.... your offset of 1 hp for a catback which in
racing terms is laughable HAHAHA so even if (if i say) i was off by 1hp your
going to make a fuss? wow what a winner.....

and my intake figures were um lower than your 5-6 hp um blabbering. so
really what are you chiming in for other than to be a :____:

that still leaves a margin of error in any setup. which was stated in such
said previous message by me but you gotta regurgitate the garbage you
hear on these forums as mandate fact and without any real info to wash
down that smattering of mindless venom.

so lets amalgamate your regurgitations of mindless comments and your
cronies blathering's and see what figures we come up with. well...... (price
is right music playing in the background)

6 hp for the intake
3 hp for the axelback
and bum bum bum bum
10 for the headers.
so holy poo
almost 20 horsepower.

okies. yeah..... so the figures your spitting out are higher than the ones i
have stated...... so what offset and in what way is the dynojet off?

so your telling me that my car is actually rated lower than the higher
numbers it should have had based on your obviously misinformed little
calculations you just spat out? yeah the dynojet fluffs numbers eh?. must
mean i need to subtract numbers backwards past the standard 140 whp
figures that the car has. since that 152whp is just so amazingly far fetched.
that the figures must be off.

oh yeah i totally forgot i claimed to have a mclaren, or was it a veyron?
yeah im tottaly bragging......:____:

shwipush! slapped back

have fun with that. when you actually do your homework you'll realize what a douch you are.