cavette

iTrader: (1)

If one goes single turbo on a JDM 2JZ-GTE, would there be any difference in power as compared to a single turbo'd US 2JZ-GTE, given that the single turbos in each case is identical?

PM Supra

iTrader: (1)

The differences are the cams and the injectors. The US spec'd engine could make a few more HP. Change out the 2 and you should get the same power.

StiCk3

iTrader: (5)

the cams would be the big difference maker. Larger injectors would also let you run more fuel safely. ECU is also different.

ucfa4

iTrader: (2)

Us version is less regulated thats why.

DIrEctQL

You're in Cali. You wouldn't pass emissions since JDM doesn't have EGR.

1siksc

iTrader: (8)

dont you mean US is more regulated?

DIrEctQL

How is that? JDM has top speed limiter and smaller turbos (less power).

wanganstyl

iTrader: (5)

mechanically, the only difference between JDM and usdm longmotors is the intake cam.

with a single turbo; you should be replacing:

ecu (or adding piggyback), injectors (usually- unless a puny turbo), exhaust manifold / piping.

the usdm longmotor will make slightly more powert due to the more slightly more agressive intake cam - 224deg vs 233 deg.

http://mkiv.supras.org.nz/specs.htm

soarer13oy

iTrader: (13)

does that mean that the jdm would either spool up faster, be more powerful, or torqey at lower rpms?

cavette

iTrader: (1)

Would the emissions failure be because of: (1) more gases out of the tail pipe; or (2) failure based on visual inspection?

DIrEctQL

Gasses. Lack of EGR is visible too.

wanganstyl

iTrader: (5)

if setup proper, no egr can get past the sniffer.

no play car of mine will ever legitimately pass visual, unless its a //M car