1jz boost leak

[suprastanger507mgte]

wtf : My friend started this thread about boost leaks....how did it end up being a discussion on what you can get from Japan?>>>

 

[The Reaper]

well did you figure out his problem???

if you think its a boost leak do a leak test....

 

[91 mK3]

the only conclusion we have is that its running rich. i couldnt find a boost leak anywhere.

 

[The Reaper]

you running 550's with no fuel controller? SAFC, EMANAGE, AEM???

if so then thats prolly your problem. the 1JZ runs pig F'in rich stock

and i answered your problem in the very beginning

 

[suprastanger507mgte]

and i answered your problem in the very beginning

Not really. He has a fuel controller for the 550's and It was tuned a bit on the richer side on a dyno while this engine was in my car. since we put it his car - and nothing on the safc has changed settings or wiring wise we were wondering what could be causing the hesitation.
Boost leak was tested for, and nothing was found leaking.
I think the driving style and lack of time with this engine may be contributing to more questions for the owner

It does hesitate when stomped on , or boosting ( floored from the start)
Hesitates on the top end as well. We will put it on the dyno again to make sure the tuning is fine. Maybe his fuel pump/pressure is weaker?I don't know....we will figure it out though...

 

[The Reaper]

interesting

hesitation could also be something with a clogged fuel filter timing is probably being pulled?

 

[sc250tt]

interesting

hesitation could also be something with a clogged fuel filter timing is probably being pulled?

yup my 1j first 1j sc had the same problem and it turned out to be the fuel filter , too bad i found out too late and my engine started knocking on startup :nono:

 

[suprastanger507mgte]

interesting

hesitation could also be something with a clogged fuel filter timing is probably being pulled?

YEah could be. I was leaning more towards the stock MKIII pump.