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I see your car has a tune....find a tuner in your area...most likely the tune and not the car causing the MAF to "over report" the airflow ....is the car new to you ???
I see your car has a tune....find a tuner in your area...most likely the tune and not the car causing the MAF to "over report" the air ....is the car new to you ???
No, had it for five years....but tune was from previous owner.
So no mods were done and then the car just started running badly ??...don't know how this thing was tuned so probably can't help you....I'd have a tuner look at it.
To be clear...it's not running poorly. Quite the contrary. The idle is a little shaky but the car runs amazingly strong. No misfires detected. No codes.
I just happened to buy hptuners to take a look around and noticed the MAF. Figured I would ask.
To be clear...it's not running poorly. Quite the contrary. The idle is a little shaky but the car runs amazingly strong. No misfires detected. No codes.
I just happened to buy hptuners to take a look around and noticed the MAF. Figured I would ask.
All good. Appreciate your input as always.
Google how to adjust MAF section, you have to scan will car is running to adjust parameters in MAf Hz. If you have Hp Pro version.
I don’t know if you have a stock cam or an aftermarket one with some overlap but it’s going to run a little rough…how much is your manifold vacuum ??…just subtract your BARO from the MAP…say at sea level 29.9 inches Hg minus 10 inches Hg would be 19.9 inHg....a dirty MAF will manifest itself with negative fuel trims at idle going positive under load.
Oh, and BTW the MAF reading is at "hot unloaded idle"....operating temp with no loads...electrical or otherwise...MAF is always higher when the car is first started and yes rule of thumb is 1 gram of air per liter of displacement of the engine (only over 2 liters).
Oh, and BTW the MAF reading is at "hot unloaded idle"....operating temp with no loads...electrical or otherwise...MAF is always higher when the car is first started and yes rule of thumb is 1 gram of air per liter of displacement of the engine (only over 2 liters).
Stock cam as far as I can tell. Although the car is quicker than most other Z06 with similar setups. Manifold pressure is 5.4psi at idle.
Trims are within spec and the idle is not really that rough. I'm going to do a few data logs and read again
To see if you MAP is skewed which may cause fueling issues what is your BARO ???…mine key on engine off is 14.6 psi at sea level or 101 kPa or 29.9 inches Hg…I NEVER use HP Tuners for diagnostics !!…factory level or nothing.
To see if you MAP is skewed which may cause fueling issues what is your BARO ???…mine key on engine off is 14.6 psi at sea level or 101 kPa or 29.9 inches Hg…I NEVER use HP Tuners for diagnostics !!…factory level or nothing.
Got it...just broke out my Autel. baro is 14.5.. I'm at 25 ft above sea level. Lt trims now at 1 and -1. Key on, engine off. Was out driving a little spirited.
You don’t look at the fuel trims without the engine running if that’s what you’re saying…just use your HP Tuners for tuning…for any drivability issues I always check that BARO KOEO.
You don’t look at the fuel trims without the engine running if that’s what you’re saying…just use your HP Tuners for tuning…for any drivability issues I always check that BARO KOEO.
Wasn't looking at tuning now only what was stored. I thought it would reveal where long term were sitting after a good 2 hour drive.
So 14.5psi converts to 29.5 hg
I keep that in KPA.
It makes it easy for me to judge atmosphere +/- from 100 kpa. And if the map sensor is working.
Also relates to the cam overlap while idling. 50kpa or lower is mellow. 55 is getting a bit choppy. 70kpa is no thanks, I don’t wish to attempt tuning that….
MAF readings c5 Z06
