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I have an L33 with a Z06 intake in my S10. The intake tube runs across to the drivers side and make a 90* turn down to the filter. I've had a consistent ses for the maf. I've read that the alternator can cause issues if the maf is too close. I've tried moving the maf down by the filter, but vertical space won't allow. I have tried a different maf...same problem. I need some advice on wether a card style maf from an LS3/LS7 would work, and if there would be tuning involved, which shouldn't be a problem. I would mount it right above the filter. Here's some pics of what I have now.
straight for airflow. you want as long of a straight section as you can fit ahead of the maf.
it does require tuning. the airflow numbers will likely at least need tweaking and the IAT sensor is scaled differently.
straight for airflow. you want as long of a straight section as you can fit ahead of the maf.
it does require tuning. the airflow numbers will likely at least need tweaking and the IAT sensor is scaled differently.
Well...that's going to be a problem. There's not much of a straight stretch that can be used that doesn't put it right by the alternator.
The section just before it bends into the TB would work. It will then have barely enough straight section for straight airflow.
There's a slight problem with that. the elbow on the tb has to tilt up just a bit for clearance, so there's a short section of pipe...a couple of inches, then a silicone coupler, then another piece of pipe. I'll mess around with it a little and see if I can get some of the left over pipe to work. IfI could get clean enough cuts on the plastic pipe, maybe I can glue it together with the hump piece.....hmmmm.
Start with what is the check engine light for? What's the code. There are MAF rationality tests that happen and you can trip them like MAF frequency too low when using a big intake with an LS7 MAF.
One thing to check with your current intake setup mass air sensor is if the air filter is new and the filter is the oil type some of the excess oil from the filter can be sucked into the mass air flow sensor wires coating the wires and can mess up the signals. I had that happen to me on one of my LS swaps. I cleaned the wires in the mass air sensor and everything was golden.
One thing to check with your current intake setup mass air sensor is if the air filter is new and the filter is the oil type some of the excess oil from the filter can be sucked into the mass air flow sensor wires coating the wires and can mess up the signals. I had that happen to me on one of my LS swaps. I cleaned the wires in the mass air sensor and everything was golden.
The filter is perfect, and the maf is clean. I did spray it with maf cleaner.
start with what is the check engine light for? What's the code. There are maf rationality tests that happen and you can trip them like maf frequency too low when using a big intake with an ls7 maf.
almost like I called it? 😂 read my last post. Your measured MAF frequency is lower than expected because you went to a big intake and LS7 MAF skewing the frequency down and tripping the code. This is tune related.
almost like I called it? 😂 read my last post. Your measured MAF frequency is lower than expected because you went to a big intake and LS7 MAF skewing the frequency down and tripping the code. This is tune related.
I haven't installed the LS3/7 maf yet. I'm using a maf for the L33, but I will re-read..thanks.
The saga continues. I've decided not to use the card style maf as it doesn't provide any more room. I've read that the alternator can produce EMF's that can meet with the maf. It's as far away from the alternator as possible. What do you think about this...the wires for the maf, injectors, and coils are in the same bundle and break out and go to the maf. Do you think the maf wires could be picking up some sort of interference for the injector and coil wires? This is the maf I'm using. Delphi AF10043
Is this impacting how it runs or just throws a code? Seems easy enough to break out the wires. I've always wondered about putting a cable ferrite on the MAF wiring too for high frequency noise. My LS7 maf wiring is broken out in my truck, but my Camaro has the wiring in the factory bundle. No issues.
11-02-2023, 11:19 AM
card style maf. 
