ok so this is Sooooooo far down the line (maybe) but i have to recant on sum prior statements i made concerning F/I. i thought i wasnt gonna plan to do this but riding in the Ptuning tC changed my d@mn mind! ok so now im thinking about going with either the TRD s/c with an NST pulley to get a nice constant hp boost in all rpms up to 230'ish hp@9.5PSI, or turbo. probably ZPI stage 0 cuz i cant afford sum of the other brands and even tho ZPI is a lesser known company im hearing few bad things. the stage 0 gives about 230hp@6psi (impressive). i dont want to hurt the daily drivability of the car and i kinda want as close to a "set it and forget it" setup as possible. i dont need street splitting power and i dont want to break the bank either.

Pros/Cons
for the price of the S/C, i can get the Turbo and all the necessary gauges
I can keep my warrantee with the S/C
the Supercharger starts at 6-7 PSI and the NST pulley brings it to 9.5 which is good but also puts my motor in more danger of crapping out
the turbo comes set at 6PSI but delivers comparable hp and much more tq than the s/c and is adjustable to about 8 or 9 PSI safely on stock internals
the Turbo would be great for Drag but spool times may hurt AutoX
S/C provides constant power and therefore better for AutoX but doesnt deliver the power that Turbo's do
the S/C isnt able to boost beyond just changing the pulley and NST's pulley at 9.5PSI is the highest option still only yeilding 220-230
Turbo allows for adjustable power with boost controllers and the lag shouldnt be TOO awkard since its a smaller turbo
Turbo's on average decrease motor service life
Turbo's on drive by wire systems tend to act silly over bumps
Turbo's need regular checkings and systematic cleaning every now and again during their service for optimal performance and long turbo life.
i can brag and say im boosted and make sounds such as "Psssshhhhhh" and wwwwhhhhhoooooooOOOOOOO Psh" at my boy
or i can say "well chad we're both S/C so i'll still win cuz u'll miss shift."

ok i know this is a long post but i would like for u people to read it cuz i would really like alot of imput. thx

 

1. so do s/c
2. ive never herd that before please explain
3. so do s/c

 

about point #2:

so i've heard with ur foot on the pedal if u hit a bump of course ur foot would press the pedal a lilttle more than let off. sumtimes this can change how hard ur surging.(NOT WOT) SO I HEAR!!! it makes sense cuz i still get torque lash with just my NA setup in lower gears.

 

if i go F/I it will probably be S/C. Warranty and power on demand (for autox) sounds good to me!

 

The reason i got the s/c is that if my hood got popped, have that all mighty CARB sticker to bail me out! =) and i wont be walking home. But i am in CA so ehh may not be that big of a deal where your at.... The warranty is very nice also.

 

Scratch that off the list if you change out the pulley for the NST one.



That is until you change the pulley.



PS...turbo dosen't void your warranty either. And last time I checked, turbo manufactures warranty their turbo kits too.

 

Really? Are there any Scion techs/service writers that can confirm this?

 

Correct. Infact many people don't like turboing drive by wire systems period. And when they do, they usually swap out for a cable TB (IS300 guys do that).

WIth drive by wire, its just a lot easier to give too much throttle and just spin tires. My thought is thats also why alot of the FI people are having such problems with getting traction and spinning tires at the track. THe throttle body just opens too quickly compared to a cable and its harder to ease into the throttle.
So even after they get their LSDs and drag radials, they're still gonna be spinning tires all thru 1st, 2nd, and mostly 3rd.

 

Talk to Kenny for ZPI, MIAPLAYA for Turbonetics, and talk to Joe/Paul for Dezod.

 

I have to disagree. With Drag radials/slicks you can get traction good enough. I have DR's and drive just fine with those.

 

ive never had an issue trying to catch grip. that is news to me.

 

On OEM tires, I rip 1st, 2nd, and 3rd. On DR's I skeet out 1st...LOL

 

I was refering to the Scion warranty being voided. That would be my miscommunification.

 

Your Scion warranty is not voided unless they can "written" proof that your aftermarket performance part caused the malfunction. By law, they can't just go around and say, "well you have a turbo kit on your car, so we can't replace your pulley belt under warranty". Totally non-related part to the turbo system, they can't just say because you have X, it caused a malfunction in Y. They have to prove it, otherwise they have to replace under warranty.

 

I think it might depend on how big of a balloon-knot the dealer is. Since the turbo is modifiying the car's power output so much, it would be real easy for them to say that it caused 'x'. I would like to hear from a dealer or Scion representative, to hear it straight from the horses mouth. So to speak.

 

^^ yeah it would be.... rythm is right though, they have to prove it. Lets say your motor grenades, they will blame the turbo with out a doubt unless you can prove other wise. Now say you have a super...... much easier to battle the dealer and get the warranty work done.

 

Again, unless you have modified the pulley that is. It puts you on the same playing field as the guy with the turbo kit.

 

as far as the jumpiness over bumps, that is a definite yes. my car gets jerky , very jerky over bumps, but alot of that is the driver. im starting to get use to it and keeping my foot still, but it takes time to learn how to do it.

 

Yeah, if you modify the s/c, or any part for that matter, yourself, then if Y breaks and they can prove the mod caused it, then the warranty is void. Done.

 

Warranty cannot and is NEVER VOIDED!!!!!!!!!! This has been discussed a billion times. Void means that they wont cover ANYTHING under any part of the warranty ever again.. the warranty is gone. That is not the case nor will it be at all.

All they can do is refuse to honor it for a specific problem IF they can prove something you did or added caused the issue.

Yes, you will get the runaround from most dealers on this, just because a lot of them look for any way out of covering your ride (an even greater number shouldnt be changing oil, much less fixing your car either.. but that is a different story... ). But keep this in mind: If you go around running 10 psi, and driving the s#!t out of your car, and the clutch, tranny, axles, etc go out, or the engine starts having mechanical issues in the bottom end... sorry YOUR fault most of the time, so you shouldnt be expecting it to be warrantied in the first place. Now, if you are running moderate boost, and everything is set up right and something happens like the oil pump fails and destroys your engine, you shouldnt have too much trouble arguing your mods did not cause it. But my motto is that if you dont know enough about a car to know when you have caused something, and know what could potentially be a cause for certain issues, you shouldnt be doing anything to your car outside of a the supercharger anyway. If you are going to be running a kit, learn how to diagnose your car, learn how to fix it and make sure you do it right. If you know just enough to change oil, and you have someone bolt on a turbo kit, you are asking for issues down the road because you really dont know what is going on under the hood to start with, and certainly cant pose a valid arguement if your dealer does try to screw you. Thats just my opinion though...