Gman1jz

hey guys, i just bought bought a 1992 sc300 with a 1jz. non vvti

i did a compression test and it came out 170-180 across all 6 cylinders

it has a SAFC II, boost controller, AFR gauge, boost gauge, Walbro 255 pump, BG s363 turbo, 2jz exhaust manifold, stock boost, fuel cut limiter, FMIC, HKS BOV, costum DP.

anyways. the car has the stock injectors and im looking to upgrade them. im looking into 650cc

ive searched and found that if i get low impedance injectors ill need a resistor box

My question is. if i get high impedance injectors, are they just plug and play? will i need anything anything else to make them work (other than a tune obviously)?

whats the difference between the bigger looking injectors vs the stock looking one?

ive never changed injectors before but im not a noob to turbo cars.

any help would be appreciated.

1JZPWRD

iTrader: (59)

My injectors are plug and play for the stock fuel rail. Since you have a 255 it should support around 500 or so hp. you will run out of pump before you run out of injectors. all you need is a retune and compensate for the larger injectors. why are you wanting to change your injectors anyway? More boost?

Gman1jz

which injectors do you have?

well, the car is still on stock 370cc injectors (i believe thats the correct size) but i want to increase te boost and hit to around 400-450 whp.

i know the stock injectors can support up to 300 ish WHP. and i dont want to push them past their 80% duty cycle effiency



My question has to do about high or low impedance. if i buy high impedence 650cc injectors, will they be plug and play? and will i need nothing else