Hi guys and gals,
Recently my turbo'd set up has started running lean between gear changes, wideband goes off the scale and the car bogs down, come off the throttle and back on again an AFR's jump back down to 13 then back to 14/15.
Also on light throttle in a high gear AFR's are high in the 17 range.
Car is fine under boost (11.5) and on the motorway (14.7/15.4).
Here is the current spec;
-GReddy/Mitsubishi TD04h turbocharger
-GReddy cast manifold with relief cuts done & uprated mounting hardware
-Flyin' Miata stainless turbo heat shield
-Begi/GReddy seperated gasses 2.5" stainless steel downpipe
-2.5" stainless decat-pipe, with O2 bung for wideband O2 sensor
-2.5" "XS-Speed" stainless steel cat-back single exit exhaust
-Magnecor KV85 uprated ignition leads
-K&N cone air filter
-Racing Beat air filter adapter mount
-GReddy Emanage Blue ECU controller (complete with USB cable & software)
-O2 clamp (made by miataturbo.net member "olderguy")
-2 bar Weber MAP sensor
-AEM wideband 02 sensor & guage
-Intercooler & silicone/stainless pipework
-SARD R2D2 blow off valve
-320cc Supra "yellow top" injectors with resistor pack
-Flyin' Miata dual feed fuel rail with stainless lines
-Stainless oil feed line
-Oil return tapped into sump.
-Cam-cover breather filter
And the first vid of the car under boost;
Ignore the missis'. I've owned much faster cars yet she still makes funny noises.
And this is the day to day through the gears where it goes lean and can kangaroo sometimes if on part throttle etc.
Sorry they're not great quality.
The car was fine the first few months I owned it, i've checked all the wiring and nothing has come lose.
Could the MAP or O2 sensor be buggered?
Can i check it somehow?
Would like to get this sorted as it's messing up the driveability and also not good being lean.