Quote:
Originally Posted by cotbu
Your tune is f'd up for 1 and you probably have a messed up setup all around. I just glimpsed through your post. So I'll point out what I do see wrong first before I go back and reread.
Fuel pressure at idle is wrong, you are over fueling. 36psi/ 43.5psi with out vacuum. The AFC not needed with nistune, but again you are over fueling +20 and +50 will make an s13 sr20det run rich at idle with 550cc injectors, you would have to have a tune for 740cc for that to make sense.
The z32 mafs is not designed to be run blow through, check out
Precision Flow Labs Z32 Blow-Through maf
They function extremely well blow through or draw through. I tested both!
Is the afc setup correctly, is the ecu tuned for the z32mafs? If the ecu is tuned for the z32 mafs then the AFC needs to be 2in and 2out.
Nistune needs a tuning!
Sent from my Highly Tuned Galaxy S3.4!!!
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I have always ran my mafs blow through and never had an issue before, but I will look into that precision flow labs test you're talking about.
The AFC and the ecu are working correctly as far as I know. The nistune is tuned for 2871r, z maf, and 550. Which is everything I have except I upgraded to a GT30 recently. The nistune was on my friends car that had the same set up basically except he had a aftermarket intake manifold and mine is stock. Although i can understand how that might be an issue at one point, but for me to drive the car around for almost a year with that setup and no issues and all of a sudden start running like poo leads me to believe it has nothing to do with AFC on Nistune.
Its interesting you said to run the in and out at 2 and 2 b/c I have messed with different settings and the only reliable one seems to be 6 and 6, which is what I have been running with no issues for a while now. I will change it and see how it goes though.
As for the Fuel pressure being to high, after changing the fuel pump and fuel filter I will look at the FPR as a possible suspect, it might be causing the car to run erratic?