protorox

i put a turbo in the 2.2 and it ran 215WHP, i lowered the weight by about 250lbs but its just not enough. whats a list of things i can do to add more power to this 2.2 if your kind enough to make a list, please list how much it would give me extra.

EXsoccer1921

iTrader: (14)

more weight reduction, bigger turbo. nitrous perhaps

DC52NV

which other mods do you have and tune?

ilovecars

iTrader: (4)

this should do ti

protorox

i do have a tune, i have 60lb injectors. i dont wanna go with a bigger turbo, i want about 250 whp though

jmz250

I'm assuming you already have I/H/E plus the 2.4 manifold and TB. If you don't, do that first. Could also upgrade your pulley and cams. Nitrous is also a possibility.

protorox

i do not have the 2.4 TB/mani....would it be a better airflow. and where is a good place to get it....also will i need a re-tune?

pacific cobalt

What other mods do you have other than the turbo kit?
If your still on the stock 2.2 exhaust then........
#1. Get a 3" Downpipe with highflow cat and full 3" exhaust system
#2. Get a better intake manifold
#3. NOS
#4. New tune
You'll be over 250 whp

elecblue06

iTrader: (1)

get the 2.4 intake mani as said as well as the tb.. yes you'll probably need a retune.. and i'd get a manual boost controller and pop up the boost a pound or 2

ilovecars

iTrader: (4)

i would totaly not go 250 unless your gonna grab pistons and rods.

protorox

im running 11psi you think putting it at about 13 will hurt anything on a stock bottom end? and no i dont want NOS. so with the 2.4 TB and mani with a bit more boost, what do you think that will do?

ilovecars

iTrader: (4)

in the gm build book it says rods and pistons go at 250 i wouldent risk it. ive been researching turboing my car for a while. its really a bad idea. its not so much how much boost your running its just the hp.

protorox

well atleast i want about 230whp and, so taking off exhaust because its a 2.5" magnaflow and getting the 2.4 TB/mani get me a little bit?

ilovecars

iTrader: (4)

your not gonna notice those kinda gains. if you really want more just invest in pistons and rods. then your good to about 400 (when stock cylinder liners go)

so my 2 cents is live with the nice amount of power you have (thats actually exactlly the numbers im looking to go for soon) or get the pistons and rods.

protorox

ok if i ge the pistons and rods, what is there to do just more psi and little bolt ons?

ilovecars

iTrader: (4)

indeed. just crank up the boost and tune it. youll be at 350 before you know it.

WickedSS2005

iTrader: (1)

until you are above 300hp, 2.5" exhaust it just fine

EXsoccer1921

iTrader: (14)

you could always skip the 2.4 manifold and go with the vulcan/gm turbo manifold and ls4 throttle body

ecotecturbo

Turn up the boost and get it tuned.

HunterKiller89

iTrader: (1)

totally wrong mang. Turbo motors LOVE bolt ons (mainly exhaust bolt ons). You wont notice them on an NA car, but on a car already pushing 215whp, the stock IM is becoming a restriction, and with a 2.5" on a turbo'ed car, of course youll see gains going to a 3".

also...cylinder walls will handle a LOT more than 400...

this part is true though. boost doesnt break cars..HP does. you're already on top of the breaking points, and i would recommend getting rods and pistons.

this would work too, but the LS4 TB is WAY to big. get a 2.4TB or a LSJ at the biggest (LSJ will require rewiring the connector though)

souchak2112

thats what id do. i would have gotta the tune after you were "completely" done with your car.

EXsoccer1921

iTrader: (14)

i don't think it would be too big for a bigger displacement turbo engine if its working fine on our cars

HunterKiller89

iTrader: (1)

turbo and blower flow dynamics are a bit different. thats why ZZP uses the stock LSJ TB on their twincharged balt.

IonNinja

if you want more power, turn up the boost...sounds simple enough to me.

ilovecars

iTrader: (4)

your right i forgot simple air restrictions are huge on f/i engine.

but i do have to disagree with your statement of the cylinder walls they definitely go at around 400 friend of mine had to get the darton sleeves cuz he blew his to pieces at around 400 hp. currently at 500.


edit- btw just checked the build book again. says replace the cylinder liners at 400.