Ok i have leanrt alot of building and modifying my 4agze map sensored engine runing haltech ecu to 4agte.
So first thing was to take off the sc and all the crap that comes with that. first problem i came across was the jdm 4age rwd maifold is meant for a bigport and my engine is a smallport so a T3 adaptor was installed. 2nd problem was that the turbo would not run with the dizzy cos it wouldnt fit so i am now running a Crank angle Sensor and 4 coils. Next thing is to mount up the turbo i was running a kkr280 and i spent 800$ on it and sold it for 5o$ today it was a shagged piece of s**t, and make dump pipe and im running a straight through under diff 3in exhaust With that flexie piece!!!!!. then the cooler piping into the cooler and into the throttle body. i used a 300x400x70 cheepie cooler with 2.5 in cooler piping. Now to electronics i went for a microtech lt10 ecu only running the water temp sensor and throttle position sensor inbuilt map sensor 2. Standard injectors and everything else standard which was my first engine. smallport with oil squirters and 8.9-1 compression ratio pistons. also you have to take off the sump and weld in a pipe for the oil return. The oil and coolant lines i used were from Enzed they are speed flow fittings. i used the heater hoses as the coolant in and out. and the oil line from where the oil pressue sensor was. i used a t piece in the line so i could have the oil pressure sender still but it reads realy low so i dont even bother connecting it anymore. also I am Not using an oil cooler!
So with that setup my engine made 169.4rwkw on 17psi boost. Then it boost spiked and blew up blah blah blah.
Now im running a bigport gze low comp ratio engine with a trd .8mm metal headgasket HIGHLY RECCOMMENDED and a rebuilt smallport head. i pissed offf the kkr junk and bought a T28bb turbo off an s15 and drove it the other day its a screamer!!! the engine made 160rwkw@14psi.
Other problems i have come across. acl headgasket= junk
the only gze pistons you can buy genuine from toyota will not clear the oil squirters in a map sensored gze! use a decent socket on the headbolts! replace the water pump!!!
any q's just ask hopefuly this will give you more insight slippry cheers
