sayayin

iTrader: (2)

After looking around and searching could not get a real answer on people with 850cc injectors on 93 oct gas.

Reason is I am tired and i am used to 400whp on my 1jz, now I have is 550cc and like 19 psi tuned by Jordan but lately the car is bugging on full throttle, probably needs a retune, anyways I found some denso high impedance 850cc with fuel rail for $599, so before I start buying stuff I wana see some MPG and reviews and how much Whp on their 1jz.

Data on my car.

1jz
single turbo 70 mm and 68 mm on the back
walbro 255
fuel pressure regulator
3 inc exhaust
Map ecu 2
550cc injectors

shaodome

iTrader: (3)

Hey man....

MPG is going to depend on the right foot really. I'd expect an avg of 17ish mpg. Those highZ injectors will require you remove/sell the resistor box you are currently running as well. Weren't you already around 18ish psi, irc? Going bigger injectors won't fix the octane of the fuel you are running. 550s are good to around 500whp. I'd look into cams.

sayayin

iTrader: (2)

well i got my injectors install, 750cc top feed low impedance, does any one know if jordan is in Miami, I send him a text no response unless he change his phone number and I forgot how to get to his home and I am like 10 minutes away.
Does anyone else does tuning with map ecu 2?

lexforlife

iTrader: (7)

as jordan stated , mpg is determined by right foot . im on 1100 cc and still avg around 20mpg in town ..

either add another 255 pump intank or get the walbro 400lph as you need more fuel .. and again as jordan stated , add some cams and i would also look for a more efficient turbo

shaodome

iTrader: (3)

Hey Jonathan! I saw your text when I got back working on the Turbo Rhino at STP but it was late. I'll be back over there tonight if you want to retune.