The Sophia Project

Jordo! · 04-03-2014, 11:53 AM

Quote:

Originally Posted by SS_Firehawk

Looking at my MAF logs, one side maxes out at 4.7 (B1), the other at 3.8 (B2).
When the MAF GM/S reads 268.9, thats when the above readings occur. One side is always higher than the other. Not sure if that is an indicator.
AF-CORR looks the same on both sides, again... No clue if that tells me anything.
Intake temps were mostly between 75 and 85 on a 60 degree morning. It rose up to 110 at an extended stop. Huighest temps in motion were about 97F when running it to redline at around 90-93 mph.
Coolant temps reached up to 204, but stayed mostly around 180. Same with the oil temps.

I'm dropping my car off Sunday to JENZ's house so her bf can bring it to work with him to do a boost leak test, compression test and test how much boost it's making. I'm thankful he could help me out as I keep going out of town and don't have time to take it myself. Once I have these results, I'm hoping it tells me the culprit so I can fix it, strap it down and see if it is taken care of and see if the car gains back this missing 200whp lol. If it doesn't, then the question become, does it need a tune or is it tapped out as is?

I have the logs if you or anyone wants to look. I can email them if you pm me your info.

I have a feeling its due to nearly maxing out the one MAF (on a cool night, I am sure you see about 5v) while the other is measuring a much lower voltage -- they shouldn't be that far apart. I'm not sure how the ECU interpolates the values between MAF's, but that could very well be it.

AF-CORR is probably just the fuel trim, so if they aren't too high and about the same for each bank, that's good.

Post IC temps sounds good, coolant sounds fine, I'm guessing oil is fine, so other than a boost leak or an undersized IC causing blowback, my money is on the nearly maxed MAF.

The only other thing I can think of is that if you have OEM VVEL dialed in, there may be need to be some adjustments to better accommodate the extra air mass -- too much overlap will blow the mixture right out before achieving peak torque; too little will cause blowback.

Good luck!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
theDreamer's Silvia	theDreamer	Other Vehicles	43	03-01-2021 11:40 AM
CAN-bus project	Knio	Audio & Video	10	09-04-2013 07:21 PM
Project X	windex	Movies / Celebrity Gossip / Entertainment / Music	2	03-11-2012 02:16 PM
512 Project - ATX	theDreamer	Texas	20	06-28-2010 09:01 AM
Project Mu	MursePaolo	Brakes & Suspension	4	07-01-2009 02:00 AM