m112 pulleysize ??

[1uzta63]

I am aiming for max of 7psi at this stage as will only be running a begi fmu and a large fuel pump . no aftermarket ecu at this stage.
I have a innovate wideband so I can watch for rich and lean conditions, but I am a little worried that when I put it all together it will be boosting to high and i might damage the engine?

what kind of boost level should i expect when fitting a m112 to a 1uz ??
do i need to change my pulley size before i fit it all togeather?

thanks

Dan

 

[LP1]

Pulley

I use a 3.3" 6 rib pulley on my daily driver. It boosts typically to 6 psi and will hit 8 psi if you let it build. The stock fuel pump works fine and the stock ecu handles 315cc injectors (78% duty cycle max) and boost well. Stock ecu is a little dopey at light throttle and low boost but sorts itself out with a little more throttle. Change your pulley before install.

 

[BlackUZZ31]

http://planetsoarer.com/boost/boost.htm

 

[freeman20b]

Looking at that chart. Why do they consider anything over 6psi in the danger zone, Is this just sucking the life out of the 1uz a bit quicker or is it a heat thing / combo

 

[1uzta63]

Looking at that chart. Why do they consider anything over 6psi in the danger zone, Is this just sucking the life out of the 1uz a bit quicker or is it a heat thing / combo

most probably cause it will need an aftermarket ecu to control everything correctly . ie most people like me only want a little amount of boost so can run with a standard ecu and slightly modified fuel system, this is just because i have a f series diff and i cant put to much more power through it