Need Imput on Build

[Notlad]

I have a few questions regarding upcoming mods, first off the picture attached is a list of mods i already have installed. i also have a chromeintakes air intake with a k&n cone filter. with that said if i install a godspeed super 20g turbo and new ported exhaust manifold and a wally 190 fp will i be good to go or will i need a tune? i know it will run better with a tune what i am asking is do i need one since im not really doing anything to the fuel pump i know if i got a 255 i would need to but i have heard with a 190 it isnt necessary. and yes i know the godspeed super 20g is ebay but im into dsms because i love them and dont want to hear about how bad they are. my last turbo was a ebay evo 16g and it ran for 10k and is still functioning but i sold the car. i plan to run 12-15psi since im not modifying the fuel. my other ? is will this help improve my mpg because i am only getting 14mpg and tis turbo doesnt reach full spool till about 4k rpm so im thinking it will help with daily driving mpg. also if i am missing anything major mod wise tell me please. i am trying to not have to get a tune(lack of funds). thank you for looking i know this is alot. the car is a 99 gst with 132k miles all matinence done im second owner first owner is a master mechanic for nissan. sorry for spelling

 

[Notlad]

anyone?

 

[hondaslayer1]

u need a tune and 255 is a better choice.also u need bigger injectors.

 

[saechao04]

What are your goals for the car? Budget? Why a bigger turbo if you're not going to utilize the power of it? If you're going to get a 20g I would suggest getting dsmlink or something else to tune with. Bad mpg could be a faulty O2 sensor, boost leaks, vacuum leaks, or exhaust leaks and style of driving. Nice to see you did the maintenance though.

 

[Notlad]

What are your goals for the car? Budget? Why a bigger turbo if you're not going to utilize the power of it? If you're going to get a 20g I would suggest getting dsmlink or something else to tune with. Bad mpg could be a faulty O2 sensor, boost leaks, vacuum leaks, or exhaust leaks and style of driving. Nice to see you did the maintenance though.

i plan to use it but for now i want it for better mpg and also so when i feel like getting on it i can here is a link to the turbo.SUPER 20G TD06 TURBO CHARGER (ECLIPSE GST GSX , TALON TSI) - $600.00 : GodSpeed Project, The Art of Performance