Hi guys, been riding my car with a weird symptom for 200km now...I need to explain for you to understand:
-At highway cruising speed, while keeping my foot on the pedal steady, 3500rpm (4.3:1 ratio), 110kmh, my car hunts between the two maps I think.
The AF ratio goes between 11.3 and 18:0+ ratio. Reads 6hg/in on the boost gauge, no boost whatsoever. It studders very very lightly when going 18:0+ AFR then It changes by itself to 11.x:1. I feel a small burst of power when the 11:1 tune gets going. It does it every 3-4 seconds.
I have a 1993 JDM greddy turbo kit with the OE MAF sensor, narrowband OE sensor still on the car (if you guys happen to know how to get rid of those flintstone pieces of hardware, let me know...I'm aware of the maf voltage simulation on the AEM site but didn't had a chance to do it while the car was still NA...) The car has been roughly d on a dyno to get started with the 440 RC's and FIC6 250km ago. I have a boost gauge and AEM wideband for keeping an eye on things if it gets ugly.
When going full throttle, it just goes in the 11.3 range and pull evenly, no hiccups. When keeping the throttle at the same position, it hunts between the two tunes I suppose. Im scheduled to go to my dyno guy in the next two weeks. If any advices comes to your minds, let me know so I can direct my dyno guy to look for something.
Does clamping the two parts or reclocking the interns of the MAF can help me through this???
Thanks guys, I greatly appreciate picking through your geniuses minds.