Our 1995 Aristo is powered with Toyota’s very popular 2JZ-GTE Inline 6 Twin Turbo Charged engine. When we purchased the car it already had a Garrett T67 (T40R) Single Turbo conversion, a Front Mounted Intercooler and full 3″ Turbo Back Exhaust. Unfortunately the Fuel System was stock, as was the engine management.
If you’ve not yet seen our full Introduction post for our shop 1995 Toyota Aristo (#phpjzs147) check it out here http://www.post-haste.ca/?p=395
The Turbo’s external wastegate was being controlled with a Turbosmart manual boost controller set at 12PSI. The factory ECU was actually still doing a reasonable job at this level although the stock ignition timing was probably a bit aggressive.
327 WHP / 290 WTQ
To safely run more boost we needed to sort out the Toyota’s fuel system.
We modified the Factory Fuel Rail to accept a -6 AN fitting from both ends in a dual feed configuration. Denso 850cc Injectors replaced the stock 440’s and a Holley EFI Fuel Pressure Regulator allowed us to precisely set our base fuel pressure and give us a 1:1 boost raise. Lastly an in-tank AEM fuel pump was installed to keep up with the higher fuel demands when the boost get’s turned up.
This setup should give us plenty of headroom for our goals of 400WHP through the Automatic transmission. If we decided to run E85 in the future we would have to rethink the Pump and possibly the Injectors, but with only 1 E85 source in the Vancouver area this is something we’re not too concerned with at the moment.
Obviously the stock ECU isn’t going to work with the 850cc Injectors and the new fuel system so Engine Management is next on the list. We’re currently unsure what system we’re going to use but it’ll either be an ECUMaster EMU or a Haltech Elite.