Hey guys, start with the basics;
- RB20DET
- Kando TD05-18G
- Aftermarket Pump (unsure of brand, already in car)
- Nismo 555cc Injectors (to suit RB26 with resistor pack)
- Nistune
Let me begin with, when I initially got the car tune with Toshi, at idle on the wide band car registered 10-11 AFR's. Light throttle would see lean 15-17 AFR's but under full throttle and boost would stay at 10.8-11.3. This was with the TD06-20G I had. Mid throttle sees 13.9-15.5...
So since replacing the TD06 with a TD05 Toshi tried to set the AFR at idle to as close to stoic as possible.
With as much adjusting on the nistune, second time around, car shows 11.9-12.6 on Idle, but now has a tendency to stall after approx 10-20 seconds of idling. It can happen 8 out of 10 idle's, or not happen at all. Still has the light throttle leaness and AFR's on full boost remain the same. I run a AEM wideband also.. When it goes to stall, sometimes if I blip the throttle it'll idle, other times it will want to stall again..
Now I've tested the car with these (individually) disconnected to little to no change;
- disconnect TPS
- disconnect AAC
- disconnect O2 sensor
Car runs no BOV, with a plate made up to block where the factory one lives. And has never run a BOV since owning the car. Car retains the factory AFM.
Injectors were bought second hand. Toshi has suggested putting the stock BOV back on, I'm comtemplating doing this and maybe a AAC clean.
Open to ideas/suggestions/theories...
Kane