Bdh29

2000 WS6 - The entire car is stock except for Magnaflow catback. I want to start modding, and a new lid seems like the easiest way to go.

I can't buy one until I understand what a MAF is. And I've seen different sizes (98mm, 92 mm) but I don't know what size I need. Can anyone clear this up for me?

bww3588

iTrader: (49)

You need to leave the stock maf alone, and get a stock sized air lid (78mm).

ws6fitz

MAF is the Mass Air Flow Sensor. Its the part that is right before your throttle body. You don't want to change this or you will need to have your car re-tuned. SLP makes a nice lid that is 78mm. For reference. The sizes that you specified before is the size of the openings that are on the MAF. You want to match your lid size to the same size as your MAF (Stock is 78mm). Hope that helps.

my bandit

iTrader: (10)

You also dont really need to upgrade in size until you start making a good amount of power. Just a lid like SLP for example, will do just fine with the stock MAF.

And also, A lid is a lid, is a lid, is a lid.. They are all the same

Whiplash88

If you changed your TB to a 90mm would you still be fine with the stock SLP lid?

ramairetransam

iTrader: (18)

just buy a lid from one of the sponsors, lots of choices. ls6 intake a good mod also .

ws6fitz

Yes you would be fine. However, your flow is only as good as your smallest point. So if you buy a 78mm lid and still have a stock 78mm MAF, your 90mm TB wont do anything. When doing these kinds of mods you have to match the components accordingly.

If you do a 90mm TB you will want to get a bigger MAF and Lid. This way you are not restricting your flow. Again, the air and flow is only as good as the smallest entry point. Make sense?

jimmyblue

iTrader: (11)

This is not really true, because air is compressible and
a fluid. Choke-points add flow resistance, but not a hard
limit to airflow. If you have good tapers in and out that
keep the flow laminar, then the effect of a small length
of less cross-section is minor. So is the benefit of one
oversized piece in an otherwise uniform tract.

Sticking with stock pieces until you know better, for
certain, will surely save you money. Everybody wants
to sell you something. Take it slow until you get past
the hype.

ws6fitz

I have to respectfully disagree with you on that. Yes, air is compressible but it will still only flow as much as the smallest point. If your smallest point is in the front, example: MAF or LID, it is only going to allow that much air to the larger entry point of the TB. IMO this is a waste if you are not upgrading the system as a whole. It's not a cheap experiment to try either so I do agree with you to take it slow until the hype is gone and you have done all of your homework on this.

I ran my car in the high 11's with a stock lid, MAF, and TB with a baby cam only combo, thru an auto with a 4000 stall and stock 3.23 gears. With that said, if I were you I would just keep the stock pieces for now until you start to make some serious power.

Bdh29

Thanks for all the info, I have a much better grip on this now. You guys rock.

Bdh29

Thanks for all the info, I have a much better grip on this now. You guys rock.