Check for codes. Do what ever it takes to make that ecu happy, which means do what it takes to have a voltage reading around 2.5 on the Aux1 monitor setting of the maft-pro.
Do you have an adjustable fuel pressure regulator? first take care of the codes...
i can see the screenshots in jpeg and bmp but i don't have word so i can't see it, sorry Kenny
Other than idle popping, those plugs wouldn't cause ocillation.
So the next piece of the puzzle is to figure out what will make the ecu happy, it should have a Aux1 reading, and 0 means something...
upgrading that elbow to a high flow is like adding 15hp across the board.
its up to you to watch your AFRs that you don't go lean, too much into the 12s is bad. Should be high 11s.
Any exhaust leak before the WB02 sensor is a compromise in the accuracy of the sensor's readings, and the...
Sorry bud, tuning is going to have to be done by you or some tech on the spot with the car.
Glad you unplugged the afm ;)
-20 is about right for your situation.
Given that the only change in the headgasket job is the larger injectors, and retaining the professional tune you had, there...
I have a lot to say, take with a grain of salt as it tracks many places. The bold is the point of the post ;)
My misunderstanding, i had the impression your using the lexus afm with your 550s.
What brand and plug type are you working with?
I recently went from autolite 3933?s to try ngk...
You need to be more clear on what the numbers represent. Punctuation really helps too.
in post 4 you say maft sensor like its part of the maft-pro, but the circumstance you use the phrase 'maft' in in this instance sounds like your talking about the AFM.
Lets do some math. The ECU uses 440...
I was reading up on this as after i had new rear tires installed the back end wasn't as crisp following the front in turns.
Turns out the camber was way too much so shifting weight side to side was noticable, plus the tread height of new tires at full pressure always throws me off being tall...
It is a great car.
Sometimes tail lights aren't the same from manufacturer to manufacturer so even if all the lights work, they might not ohm out to the sensors' likings and the light will go on. Don't mix and match brands i guess
If your using the maft-pro to scale the airflow to the ecu, where your settings are set for a lexus afm, and you change to the oem afm without reskewing the airflow with the settings, then suddenly at speed the oem afm is reporting less airflow than what the ecu is expecting for that load and...
affirmative on the 24, odd that with the lexus afm and running afc mode that you would see code 24.
24 can retard timing making driving less enjoyable.
34 is hitting boost cut or at least moving more air than the ecu thinks you should be, not really afm related unless you downsized from the...
Fouled spark plugs maybe?
CPS is off a tooth?
Is your intake mani and throttle bodies well sealed?
Did you modify your EGR in any way?
timing sounds retarded.
Undoing the hood struts and pushing the hood back to the windshield is another option. It rests gently there. Makes a good sail, be wary of the wind :p
There's only so many things that have that effect on the engine.
AFM
CPS
TPS
ISC
incorrect vsv routing?
Fuel pump resistor?
I suggested afm from my own experiences with my maft install, running afc mode and going to speed/density. I got some wire mixed up so it did that to me at idle...
400 is huge. There is supposed to be some ocillation of course, like 20-40hz. Codes? Maybe a solder joint is working loose in the harness, they don't last very long if you don't shrink wrap them.
Sounds like an afm issue...
Have you
-Recently unpowered the ECU so its still learning?
-Checked...
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