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No Boost - R33 Gtr

usmair

By usmair,
in Engines & Forced Induction

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usmair Mentor

usmair

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Suppose the turbos are gone and I replace then with -5 or -7s....

how is it going to work if everything else is left standard... mainly the ecu & no tune :S

Obviously im not going to run 20psi through it... but how will the car respond with me running say 5psi...

its very risky I know... just curious

GTScotT Grand Master

GTScotT

Posted
Posted

keep in mind, -7s will bolt on and be similar to stock with the capability to run more boost later. meaning you can essentially keep your car as is for a while and keep on enjoying it for a big $$ fork out later when you want to tune it.

if you go -5s, the same cannot be expected. it wont run great at low boost (or as a gtr should) and wont be safe to run at higher boost. you will need injectors and afms before you venture any further with it also, at a fairly large cost too.

depending on your goals, turbo selection is crucial... you dont want to buy 440kw turbos when you want 320. you especially dont want to buy turbos that will do 440kw because the alternative would struggle to hit 320 and hey the big ones will do that easily.. thats not how efficiency works unfortunately lol.

some_cs_student Veteran

some_cs_student

Posted
Posted
keep in mind, -7s will bolt on and be similar to stock with the capability to run more boost later. meaning you can essentially keep your car as is for a while and keep on enjoying it for a big $$ fork out later when you want to tune it.

if you go -5s, the same cannot be expected. it wont run great at low boost (or as a gtr should) and wont be safe to run at higher boost. you will need injectors and afms before you venture any further with it also, at a fairly large cost too.

depending on your goals, turbo selection is crucial... <cut>

Why buy -7's when you can buy -9's or get a hypergear 2860RS core highflow?

Where -9 have similar response but with more power than a -7.

Check the turbo threads :yes:

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