Chopps wrote:No codes?
nope nothing.
The deeper i dig the more I can remove from the suspect lists, summary so far:
I have a 2015 hilux 2KD-FTV (KUN25L-PRMSHW), 144hp (intercooler, electric steered VNT turbo, EGR cooler etc).
However we cannot find why it only makes 102-104 hp, if we throw in a 180hp tune it gets to ~150hp...., now back at original 144hp maps and doing 102hp again.
No error codes
Yes a 102hp version exists. However this is always with a vacuum controlled turbo as far as I can tell, also this one has another ECU.
Virtual read of ECU shows: SW: 89663-0KR72- / Spare: 89661-0KW60 / SW upg.: 30KR7200 (Confirming it should do 144hp)
Work done:
- lifted head, and redid / cleaned the complete engine top, redid valve clearance etc.
- intake clean, replaces throttle valve in the intake, clean EGR
- turbo full check, replaced exhaust, labda sensor
- injectors are bench tested, they produce 45mm2/H (and the tester said that to be perfect in specs for this injector DENSO DCRI200280)
Some numbers on sensors:
MAP (full throttle, 224 kpa, perfect and up there directly) (perfect on spec)
MAF up to 180gr/second at 3000+ RPM and pedal to the floor (should be OK)
EGT1, cruising ~300/320 celcius (seems ok..)
Throttle input in ECU goes up to 100% (te pedal works)
Voltage from ECU to sensors is on spec (believe ~4.5v)
fuel pressure nice and constant. ~45k kPa idle and up to 180k kPa on max throttle and higher RPM.
Injector values well within spec, bench tested (still baffles me)
Switched injector driver with other car to rule that out, no difference.
My feeling is that somehow it doesn't get enough fuel OR is working against itself. But in a way that is not throwing any codes....
My questions:
1. Has anyone ever seen anything like this?
2. Does anyone have numbers that can backup the volume produced by the injectors?
3. Has anyone ever dealt with damaged loom / broke Injector driver? (and is that a match with my complaints?)
Next actions:
- Scope on injector signal to see of that is ok
- Still don't trust the revised injectors that went in, could just replace those. But if that is not the issue a lot of money out of the window....