So I have a 1jzgte in a mk3. I have single swapped it with a 6262 fmic 3inch from turbo back apexi neo walbor 255 with 12v mod. and it ran great with 370cc injectors but before I turned boost up I wanted to put larger injectors in it so I put 630cc injectors in it. I know its hard to tune those injectors with that controller but Its leaning out real bad in boost and when I add more correction to the controller it just cuts out as soon as I hit boost plugs gapped to .22 brand new super spark coil packs checked ecu the whole nine. So where im going with this is I dont wanna spend money on a standalone ecu if just a tune isnt going to fix it. I need some input so I can be sure it just needs tuned. Just dont understand how it can run great with just 370s and then I put 630s in and it cuts out.
1jzgte cutting out bad
- Thread starter zac101191
- Start date
Injectors are too big for the Ecu to handle most likely.
That and the neo could be the problem. Those have been known to have issues and apexi will fix them.
That and the neo could be the problem. Those have been known to have issues and apexi will fix them.
Assuming your on the stock 1j ecu, you should not go higher than 550 injectors. It's well documented on this. You should try Aristo 440's first.
Do you have an afr guage and fuel afpr?
Your ecu might also be over correcting timing causing it to go lean because of the neo. It is only a fuel manipulator and doesn't control timing.
Do you have an afr guage and fuel afpr?
Your ecu might also be over correcting timing causing it to go lean because of the neo. It is only a fuel manipulator and doesn't control timing.
I took em out and put the stock ones In and it runs perfect not lean at all. Yeah I have a a/f gauge I'm running 14psi right now and it isn't leaning out at all its 11.4-11.2 all day. When cruising its 14-15. Now the problem is my fuel pump will randomly not kick on its a walboro 255 no 12v mod I can hook it up but don't really have the need to. I can't figure it out I thinks its because of a loose ground somewhere or the pump is getting to hot? Is that possible?
it just seems like its heating up on me. I think I just ran the tank to low and it got hot and shut off till it cooled down. If it stays about a quarter tank it wont do it so thats what im going with. I know they dont recommend you run the tank that low but never had this issue with anything else, I don't know...