Ah, that just brought back memories for me. I read something a while back about someone installing a 'performance' air filter and having an erratic MAF as a result... going back to the original filter resolved his problem.
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Ah, that just brought back memories for me. I read something a while back about someone installing a 'performance' air filter and having an erratic MAF as a result... going back to the original filter resolved his problem.
Yeah, I have noticed with all the stock stuff and aftermarket stuff that use this MAF the air intake has a smooth transition into the filter. They say you want about 6" on both sides of the MAF on straight tube. None of the after market stuff has that nor does most of the stock stuff. My problem I believe is that I only have about 3"-4" in front of the MAF to the filter and no smoothing transition. Just pipe then filter. I just don't want to back it up and get it to close to the TB and expose it to reverb of the intake. Although since it is basically a closed system what you see at the manifold you see at the filter. I will have to play with it and see what I can do. On the TBSS I tried all sorts of combos with different filters bit nothing worked.
Have you got enough room to put a stock air filter back in?
Not any more. The stock filter is a square type that sits in a box. The box won't fit with the way the piping is set up.
I thought that might be the case. You could always try to screen the MAF, it's cheaper than the honeycombs on the market and it should help to reduce the turbulence.
I have to figure out something. I literally want to pull over and leave the car on the side of the road with the MAF hooked up. What screening would you suggest?
If you're using a stock MAF tube, then try to get a hold of a factory MAF screen. If you've got a custom tube then make one out of fibreglass flyscreen mesh. Just make sure whatever you put in there can't get dislodged.
It is a 4" tube so something will have to be made. I will epoxy what ever I do in there. I haven't seen a screen on anything with a stock LS7 style MAF card.
I don't know much about the LS7 style MAF card... maybe with a stock set up the air filter does enough buffering and they don't need screening, but with your set up you need something to reduce the turbulence. Just looking at your log I can see how crazy the MAF readings are... so I can imagine what it's like to drive.
Yes, cruise is the worst, especially light throttle. Idle is pretty good, acceleration is pretty good, and I can't really tell what is going on at WOT. Light throttle and deceleration are horrible. I never considered the stock filter creating a buffer but it makes perfect sense. I guess I need some sort of velocity stack or flow straightener to smooth things out.