Pff on turbo

[Yoda]

So if some remember about 2 or 3 months back i started my quest to turbo my car. Well its hard and not enough data out there on turboing a yaris especially for me to feel brave enough to start it. So i sold all the parts to some asian guy:wink: Now i am back to improving my N/A power.

Is there i mid-pipe out yet for the sedan? what other options are there N/A wise?

The Blitz kit is way too much in my book so don't even mention it

[thebarber]

custom midpipe is your best, cheapest bet.

[cali yaris]

custom exhaust, header-back shouldn't cost you more than $300 or so. The intake manifold we're developing will hopefully make some power.

[PETERPOOP]

custom exhaust, header-back shouldn't cost you more than $300 or so.

Does this price include mandrel bends?

[cali yaris]

It did for me. Resonator in the middle, Magnaflow muffler, dual-tip center-exit.

[scape]

i don't know a lot in this area, but I think if you want any noticeable gains in NA, what I've always been told is balance and blueprint, so new internals (higher strength and lighter connecting rods, better pistons and headgaskets to take a beating, all well-designed internals, a more aggressive camshaft valve timing) ultimately up the compression and possibly maximum rpm's, and tune it with a new exhaust system.
I think throwing in a exhaust system to a system that is already tuned well enough by toyota is a bit of a waste (*ducks and covers*) hope I don't hurt any feelings; 5-10 HP for hundreds of dollars is not my idea of a good money well spent, not to mention there is possibly additional weight with these new components. either way power increase will cost, but a well-tuned and ramped up NA engine will be a blast, and at similar weight with no additional parts to necessarily go wrong; I think you could ascertain maybe around 140HP with something like this, though it won't be cheap...I think that's why most jump on the turbo bandwagon...anyway..
someone on here was rebuilding their engine's internals, as I saw some connecting rods pictured; but I don't know where it led to.

[scape]

in a quick glance:
http://www.sai-inspection.com/balance_&_blueprint_engines.htm

[thebarber]

i got quoted 300CAD for stainless, mandrel-bent, midpipe from behind my resonator to the axle to meet w/ my megan axleback....2" at that

[Yoda]

custom exhaust, header-back shouldn't cost you more than $300 or so. The intake manifold we're developing will hopefully make some power.

but i love my trd exhaust:biggrin:

[Tamago]

n/a is a waste of money. spend money making the car turn better.

[AdeJong 03]

n/a is a waste of money. spend money making the car turn better.

and stop faster/more consistently

the brakes on these cars fade like a mofo

suspension/brakes should always be a priority especially if your car is slow. you make up more "time" and spend less money doing it before power

[RacerFreakXXX]

+1 on that. Make sure you car will be able to handle the power before you add it. My friend has 260whp on a 05 civic si and has no diff, no suspension, just a front strut bar and tq damper. I told him to just spend the money and buy a rsx and do suspension and now he wishes he had done what I said. Also I might add, turbo kit or supercharger it's the same cost. I priced it out and to run on a stock engine the turbo kit just takes some time in the shop with a dyno and custom piping.

[advocate]

Also I might add, turbo kit or supercharger it's the same cost. I priced it out and to run on a stock engine the turbo kit just takes some time in the shop with a dyno and custom piping.

They sound a bit different don't they? Plus since a supercharger's boost is constant and a turbo generates it through exhaust I would assume a turbo's boost gauge would be more fun to watch.

Plus, there is that unbelievably sexy hiss sound that a turbo makes as it spools down (I think that's what's going on)

As far as my thoughts on power vs. suspenion: I went suspension first since I'm a budget modder so it looks like I'm good! :thumbsup:

[Yoda]

A couple points to hit

n/a is a waste of money. spend money making the car turn better.

Eh wat n/a waste of money? Then half the members on this site wasted there money. It might not be the best setup for our small displacement engines but i dont think its a waist of money.

+1 on that. Make sure you car will be able to handle the power before you add it. My friend has 260whp on a 05 civic si and has no diff, no suspension, just a front strut bar and tq damper. I told him to just spend the money and buy a rsx and do suspension and now he wishes he had done what I said. Also I might add, turbo kit or supercharger it's the same cost. I priced it out and to run on a stock engine the turbo kit just takes some time in the shop with a dyno and custom piping.

-1 on that. We drive a yaris and would be lucky to see +20whp with bolt ons . I should end it there but let me explain. Unless you are boosted up your stock suspension is enough to handle what ever bolt on you are going to put on. To gain all the benifits out of it suspension should be done imo. And i think most are taking it a little too far with all this talk about handling. Most here do not tack and will not be taking any 90 or 100 degree turns at an accelerated speed. And the cost is not the same. Much cheaper to turbo than S/C including piping. Dont add dyno to it cause you have to do the same if you S/C.

I have heard many say you need to do work on suspension before you do your bolt ons because {reason} and {reason}. We dont gain that much from bolts ons not enough to warrant struts, coilovers ect.

For those who dont kno or have forgotten my past posts i have already done suspension about a year ago before the hack even.
{end rant:smoking:}

[Tamago]

$1500 for 15hp is not very smart IMO.. and yes, anyone on this site who spent their hard earned money (guessing it's earned anyway) on n/a mods for the purpose of "more power" should have spent that money on better tires, suspension, or something altogether different.

or nitrous.

it's a 1.5L econo engine that's over-square, has an offset crank, and simply awful ECU, (designed for economy). all that money you'll spend and you'll get beat by your grandmother's corolla.

don't forget guys, i own the same engine, i'm not attacking the car. i'm just saying, spend your money on stuff that matters!

edit: i am aware that most car enthusiasts mod simply for the sake of modding. that's fine, just don't do ALL THAT for your yaris in the name of "more power"

[fmicle]

I think some of the mods do make the car a little more fun to drive. I also do believe the same mods provide a modest increase in power, but do I really feel the difference of the extra 5 WHP I probably have now or is it all in my head? :smile:

I am not comparing my Yaris to other sports cars, but to other Yarii and that's where the mods make the difference. If you want power, get a diesel truck or something :wink:

[PETERPOOP]

Yoda,

I don't know if you have done it or not already ( you don't have your yaris garage viewable ), but the gain most N/A people say they felt was the underdrive pulley and especially the 1zz throttle body. You must obviously know that by now; but just throwing it out there.

[Tamago]

Yoda,

I don't know if you have done it or not already ( you don't have your yaris garage viewable ), but the gain most N/A people say they felt was the underdrive pulley and especially the 1zz throttle body. You must obviously know that by now; but just throwing it out there.

all that for 5whp though? :rolleyes:

[PETERPOOP]

If he wants to stick to N/A, then those are his best bets. What can I say? GL yoda!

[Liltoaster]

Start with the basics: Exhaust, Intake, Pully's if you want to mod it.

[PETERPOOP]

I believe he has all of that already.

[Yoda]

here is my dyno post the second is whp/mph:iono: forgot to switch it to rpm

http://www.yarisworld.com/forums/showpost.php?p=333132&postcount=61

and to Tamago

I here ya buddy and believe me I understand the the more power idea, with N/A bolt ons for a 1.5l engine sounds retarded. But i like to be different or retarded:biggrin:. If i wanted to gain mad stupid amount of power with N/A i would have bought a mustang or something of the sort. I am never gonna race the car nor do i street race. Just for me and how i like to drive.
Respect your opinion tho:thumbsup:

[Tamago]

modding for the sake of modding is just fine :) as long as you admit it of course :D

[RacerFreakXXX]

if you are going n/a you might as well bore the engine to 1.6, raise the compression to 11.0:1, port and polish the head, ect... if you go n/a you have to go all the way otherwise it's just not worth it to half ass it. Also you will spend more like 6-8k on building and tuning a fully built engine to see any gains close to a simple turbo or supercharger.

[Tamago]

so basically, throw away money on a car that'll still get beat by a stock S2000...

[Altitude]

i knew you can do it Tamago:clap:
that has to be the most MAKE SENSE POST i've read in a while.

+10!!

[RacerFreakXXX]

so basically, throw away money on a car that'll still get beat by a stock S2000...

or just buy a s2k... honestly if you want n/a power you buy a big 6cyl or an 8cyl or buy a Honda 4cyl and have no torque.

[Tamago]

or just buy a s2k...

best advice in the thread yet.

[puetato89]

thats like saying well just buy a n/a supra, or buy a g35, maybe what should be told is what he would need 2 do 2 make it faster, there is a reason why he didnt buy a s2k im sure

thats a lil off topic imo

[RacerFreakXXX]

it all depends on what you want out of n/a... the op seems to just want 10whp more and that is reasonable for n/a. If you wanted 40whp+ you are barking up a long hall with n/a unless you have one of those cars you mentioned. You would be better off with a s2k with intake, exhaust, k-pro, and basic coilovers than even a s/c or t/c yaris imo.

[JohnnoEH]

or just buy a s2k... honestly if you want n/a power you buy a big 6cyl or an 8cyl or buy a Honda 4cyl and have no torque.

Or fit a bigger motor to the Yaris! :biggrin: But then you're getting into big dollars and custom fabrication/engineering stuff. An '08 Hayabusa or ZX-14 motor could be fun (even though they wouldn't be so good for daily driving)... :biggrin:

Maybe he doesn't want a S2000, I know I'd rather do up a Yaris than that. Not only is the Yaris much more comfy and practical, people don't expect a Yaris to be fast, and tend to get really upset when you beat them. Tell me that's not more fun... :evil:

In all seriousness, though, I'm agreeing with Tamago on this one.

[Yoda]

wow wow wow wats all this lol. I just want ideas for N/A for yaris and asked if there was a midpipe as yet. Again not looking for any insane power boost as if ya read the first post i said the blitz kit is too much for me so there is no way i would sink 8k+ into this. I didnt get a s2k cause i couldn't afford it. I like modding my car.. well cause i like it.

I am not racing it so there is no need to go crazy with the mods. I am full aware that it will be very expensive to go all out N/A and the power yielded would not be worth it. I am not going all out N/A . just looking for 10+whp would be nice and i would stop there. Would love to achieve this without getting into the engine. Its funny cause i feel more comfortable with upgrading cams than installing a turbo.:iono:

lol i must say it again just incase some1 metions it. Not gonna race, not trying to be faster than an other car, not gonna street race these cars.

o btw The Si responds better to bolt ons that the s2k does and is cheaper:rolleyes::thumbsup:

[Tamago]

and the money spent "upgrading" cams ? $1000.. gains? i'd wager less than 20hp..

again, not very cheap.

[puetato89]

im staying out of this one 2...

[rob323]

it's a 1.5L econo engine that's over-square, has an offset crank,

You say that like it's a bad thing?

[scape]

well the real questions are how much do you want to spend in total (less than 2k$ i gather) and how much power do you want to have (about 120hp i gather)...
this guy has bought some new internals: http://yarisworld.com/forums/showthread.php?t=13685&highlight=pistons&page=3
mostly I'd be interested in is those rods, they look substantial (though I think they lower the compression), I'd also be interested to see if anyone adapted the prius pistons (http://www.yarisworld.com/forums/showthread.php?t=15206&highlight=prius+internals) to a yaris, they possibly handle a greater compression ratio I believe or if anyone found some new head gaskets.
if you did increase compression, a new camshaft would most likely be required, or atleast adjust your current one to properly reflect this.
with all of this, you'd REALLY want to plan this out and make sure the components are highquality, stronger than original, lighter than original, and made to greater tolerances than original; then find a way to tune the whole thing (probably the most intensive and important portion of this whole thing)...to save money you'd want to probably do the install or find a friend to install the components.
as well, this would only really work on 2 main aspects of the engine (how much more energy it can extract from gas using a higher combustion point, and possibly how much faster your engine can cycle-- something I would not venture on personally as much more work needs to be done).

other than that, find a way to drop weight significantly while still catering to your lifestyle: http://www.yarisworld.com/forums/showthread.php?t=17526&highlight=weight+reductions
a drop in 100lbs (dead,non-rotating) weight would be about a +4hp equivalence...

[Yoda]

and the money spent "upgrading" cams ? $1000.. gains? i'd wager less than 20hp..

again, not very cheap.
really dont think its gonna cost $1000 for cams for this car. I cant imagine anyway it would. It most $800.

well the real questions are how much do you want to spend in total (less than 2k$ i gather) and how much power do you want to have (about 120hp i gather)...
this guy has bought some new internals: http://yarisworld.com/forums/showthread.php?t=13685&highlight=pistons&page=3
mostly I'd be interested in is those rods, they look substantial (though I think they lower the compression), I'd also be interested to see if anyone adapted the prius pistons (http://www.yarisworld.com/forums/showthread.php?t=15206&highlight=prius+internals) to a yaris, they possibly handle a greater compression ratio I believe or if anyone found some new head gaskets.
if you did increase compression, a new camshaft would most likely be required, or atleast adjust your current one to properly reflect this.
with all of this, you'd REALLY want to plan this out and make sure the components are highquality, stronger than original, lighter than original, and made to greater tolerances than original; then find a way to tune the whole thing (probably the most intensive and important portion of this whole thing)...to save money you'd want to probably do the install or find a friend to install the components.
as well, this would only really work on 2 main aspects of the engine (how much more energy it can extract from gas using a higher combustion point, and possibly how much faster your engine can cycle-- something I would not venture on personally as much more work needs to be done).

other than that, find a way to drop weight significantly while still catering to your lifestyle: http://www.yarisworld.com/forums/showthread.php?t=17526&highlight=weight+reductions
a drop in 100lbs (dead,non-rotating) weight would be about a +4hp equivalence...

I ignored all of the first of your post as its clear you didnt read mine where i stated that i would rather not get into the engine and opted for other means.

Look at my dyno again i need about 8whp to make it to 120. I kno this can be done without getting into the engine. Just asking for some more ideas.

So plz no more talk of how expensive it is to go N/A or these over the top engine builds. Keep its simple bolt ons. U have my post with my dyno and mods. Give me something i haven't thought about.

I like the weight reduction idea. Will have to see if i can manage that.

[scape]

special sauce? i believe that will work...

to be honest, I re-read this entire thread and you never mentioned not wanting to get inside the engine; all I pointed out was that to go further you might need to crack her open and do real work, not bolt-ons.

I don't think there is too much more you can do without getting in there and doing internal work; weight reduction is by far the most economical choice (to a limit).
how heavy are your bolt-ons added up?
do they make up for the additional weight in power? i have a feeling they do partially, a dyno does not take into account the weight of the vehicle (to my knowledge) and thus you should think about that, 23 lbs for every hp.
your dyno says 111hp which is great... but without a new camshaft or atleast ecu work I don't know if there is much left to do...
good luck

[Tamago]

really dont think its gonna cost $1000 for cams for this car. I cant imagine anyway it would. It most $800.


are you installing them yourself?

[Yoda]

are you installing them yourself?

yes