2JZGE Na-T TT Ecu Mod
05-08-20, 08:47 AM
#4085
what pump did you put in there again? maybe you somehow do have too much fuel pressure, with the issue of the line blowing off in the tank maybe something is going on there.
You may need to do something about your evap system, is it still connected like stock? how about egr? I think there is another issue going on.
check where all your vacuum lines are going. if you are on the dizzy use a new cap and rotor, maybe even plug wires.
It's getting harder to troubleshoot these things over the internet without being there to look at stuff.
if that is the issue you would need a piggyback to lower fuel, something like a safc would work, but if those are 440's you shouldn't need that.
You may need to do something about your evap system, is it still connected like stock? how about egr? I think there is another issue going on.
check where all your vacuum lines are going. if you are on the dizzy use a new cap and rotor, maybe even plug wires.
It's getting harder to troubleshoot these things over the internet without being there to look at stuff.
if that is the issue you would need a piggyback to lower fuel, something like a safc would work, but if those are 440's you shouldn't need that.
05-08-20, 08:55 AM
#4086
I’ am really going get after it this weekend .... I Really do appreciate all your advice and input I’ll check everything stated above I have a dw340 pump Evap is still there and egr Will check back in on Monday
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mrmj2u (05-10-20)
05-11-20, 12:03 PM
#4090
you check the output voltage at key on engine off and again at engine on. I forget what the exact values are but they are online, like 2.x volts or so with engine off and 1.x volts idling. it is very easy to short the map sensor or ecu, so make sure the signal wire or power wire never touches ground, be careful with the probes.
05-15-20, 12:21 AM
#4094
Driver School Candidate
99 sc300
Hi everyone. Well my stock ecu went bad and my car isn't being used much nowadays. Ive been searching through looking for info all around, but man is there a ton of pages (which is great!). I wanted to know if a NA GE VVTI will run like stock with the TT ecu and are there some notable downsides to it? I am planning to go boost again sometime in the future, and im really looking for the TT ecu mod since it seems affordable and easy to deal with. I previously used a greddy emanage ultimate, but I don't know if id want to deal with buying all those parts and then getting a tune for it when Im not even planning to push more than around 350-400hp anyway. Thank you.