Kamron C Cook
New Member
I have a 1jzvvti from a jzz30/jzx100, stock auto ecu, stock injectors, big holset single, all bolt ons, new bkr7s plugs, maf cleaned, stock coilpacks, tomei fpr, new walbro, safc installed to monitor rpm/knock.
When the engine is just fired up and I go through the power band everything works great, wideband reads 10.7ish rich but feels great.
After 2 mins of driving (warmer engine) it has this hesitation from partial throttle 2300rpm and up. Will still make full 12psi boost but without any of the timing and wideband reads 9.4afr..
I've replaced coolant temp sensor, makes no difference if its plugged in or not, and gapped my plugs way down to .025.
I'm desperately trying to work the bugs out before switching to aftermarket ecu..
When the engine is just fired up and I go through the power band everything works great, wideband reads 10.7ish rich but feels great.
After 2 mins of driving (warmer engine) it has this hesitation from partial throttle 2300rpm and up. Will still make full 12psi boost but without any of the timing and wideband reads 9.4afr..
I've replaced coolant temp sensor, makes no difference if its plugged in or not, and gapped my plugs way down to .025.
I'm desperately trying to work the bugs out before switching to aftermarket ecu..