Yes, i did use the search feature, but wasn't satisfied with my findings.

Is a turbo for my xB possible with an auto tranny and no engine mods what so ever?
Will a turbo leave a pipe coming out of the front end of my car like it has in many videos / pics?
Will it really give me higher MPG?
Will it void my 100k warranty?
and last but not least, what is the average HP gain?

Thanks!
-Austin

 

Im not sure if you can turbo an auto.
Im pretty sure it will leave a pipe sticking out.
It will NOT give you higher MPG.
It WILL void any type of warranty.
I heard the average HP gain is between 60-80.

 

Thanks! You're the man!

 

correction, it will void your powertrain warranty. other stuff not related to the engine, transmission, drive shafts etc. can be replaced under warranty if they were not effected by the turbo.

 

you can gain MPH with a turbo.
it depends on you driving.
ive tried driving 2 ways.
#1 i shift at just over 2k threw all 5 gaers
#2 i take 1st gear to 4.5k and then 2nd to 5k then thift to 5th.
i get better MPH with the second way.
this is true because the faster you reach your top gear the the better you MPH will be over a distence.

it also depends on when your turbo starts making bost, and the size of your piping and what you have your bost controler set at, on a basic stock application. you get in to other mods and you have a dozon other veriables to take in to account.
it not as simple as: "It will NOT give you higher MPG."

 

You're right, but most people who buy turbos for their cars don't tend to drive conservitavely.

 

Turbos work better on sticks and superchargers are more for autos.

 

Both can work just fine on either transmissions though.

 

actually...

turbo's work really good with auto's because you don't lose boost between shifts with automatic transmission like you do with stick shifts, which loses boost everytime you shift because you close the throttle while clutching in and such. so with an auto, you don't get turbo lag after shifting.

 

yeah, actually some guys with turbos get better mpg then stock and s/c'ed tc's because your not always boosting. if you drive conservatively and don't boost every chance you get, you'll better mpg.

 

But with the auto it takes much longer to get into the higher RPMs where you build power. Also, if shifted properly the sticks should not be having the throttle closed between gears. The supercharger is instant boost so is better matched for the autos.

 

say that to my mom's subaru legacy 2.5 gt limited auto. that thing is wicked fast. kinda sad that my mom has a faster car then i do. but at least having a manual makes my car more fun. maybe when i get supercharged, i'll be better off.

anyway, a quick spooling turbo auto will be a super charged auto. the supercharger will only make full boost at redline, but the turbo will spool much sooner than that.

look at it this way, reviews of the subaru legacy with the 2.5 turbo, and the 3.0 h6 tend to heavily favor the turbo for response and accerlation. i know the h6 isn't supercharged, but they make about the same peak hp, and and superchargers and mechanically tuned engines deliver linear power increases.

anyway, with the auto, maybe you loose alittle off the line until you hit boost, but once in boost, you stay in boost through every gear flawlessly.

 

man i have an auto and want a turbo so , bad, i plan ta just go wit greddy cuz the price i guess, and is the only reason some websites say auto only becuase thats what the e-man is tuned ofr? cuz if so dat pretty easy to fix wit the tuning equipment stuff right?

 

first, a 6spd legacy GT will smoke an Auto... second, who says that superchargers dont make peak boost until redline?... hmmm

 

well, actually, an auto legacy gt would destroy a 6spd legacy because...well, they don't exist you can only get them with a 5 speed manual. anyway, i'm not sure which is faster but the auto does have that advantage of no turbo lag between shifts. and i have driven it, even under moderate pedal input, you leave everybody behind you with ease.

and what would the point of a supercharger be if it didn't continue to increase boost until redline with the exception of some vehicles that are twin charged like the vw concept car i read about in car and driver a while ago.

 

subaru legacy gt spec b... 6 spd... as far as manual vs auto in turbo format, why didnt they put an auto in the sti? the supercharger maintains boost, it might build slightly, but it is pretty much the same psi the whole time.

 

a manual would benefit more from turbo more so than an auto would because of gear ratios. if your turbo doesn't spool until 3000rpms, the manual with its shorter gearing will spool the turbo faster than the auto with its taller gearing...

 

Autos wont lose lag in shifts though, therefore auto is overall better in terms of drag. Autocrossing, road courses, etc manual takes it.

Since your talking general, i guess prof. drag builders didnt get that memo. Maybe you should send them one.

 

1. You shouldnt slap a turbo on any n/a engine without proper building.
2. Yes
3. Typically no. Even babying when i had my turbo auto it was less than stock.
4. Yes, if anything goes wrong dealerships will typically blame _____ part if its not factory produced.
5. Typical for a pre-made kit, 40-50whp. Rarely higher. Custom, any where from 30-100whp+ gain.

 

They dont use autos in sti's and in other performance cars typically due to drivetrain loss, not due to the automatic not being able to handle or perform.