when little annoying hoses pop off and wear thru, it sends trying to map the thing into wild goose chase mode.. as Paul has seen 1st hand. the silliest of hoses being off, makes the fueling completely off..
The Fuel Pressure Regulator (3bar) also runs on vacuum, dropping to 2.5bar on idle, or in the case of tufftys, 3bar on idle, so now its fixed, its too lean down bottom, with adaption working hard to pull it back to its lambda 1.. and under boost, as it was under fueling & lean cos it was at best 4bar @ reggy where it should have been 4.8bar, its lean under boost hence injector duty cycles at one point being said to be nearly at their max.
logging and adjusting now, to try and pull things back again. all takes time, which is ££ when at the rollers as per Friday.
It desperately needs a flowing exhaust on it. Stock(tired) old rear box is choking its flow, which in turn is unwanted backpressure whent he GT30R want to rip, the revs and peak power is earlier than it should be, and egt's become a factor at this point.
its a nice driving setup. spool is good for stock bore, non mod engine.
some fmic pipework adjustment to aid flow will help things also.
bill