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The 78 and 90 mm TBs have the same OD which is about 3.875"

IMO, although it is not my money, I would upgrade the whole intake stream to 4" and 90 mm TB and a 4" (100mm MAF) as part of that. You...

The PowrMAF will allow you to run a MAF beyond 1000 boosted HP.
It is helpful to calibrate PowrMAF to your tune using HPT or EFIlive. In the end you have all the benfits of a MAF with none of the...

Wow, there is a lot going on under that hood!

I understand, would you prefer "locks IN" ?

It is a little less clear in boosted applications. .

I get many questions regarding the PowrMaf 100, so let's see if you guys agree with this?

The PowrMAF 100 is a special Milspec nylon/fiberglass 103 mm/~4" housing with the latest GM- Hitachi...

Bill,

When you put the LS2 MAF back in what MAF table did you have in the tune?

It sounds to me (A NA guy) like it was a lean stumble and now the MAF could be over reporting the AIR which...

Greetings,

I am the PowrMaf guy and am trying to understand the true limitations of FI use of the PowrMaf. The housing is not plastic but fiberglass reinforced nylon which is heat resistant. I...

The LM-2s are out both single and dual WB. Late and a bit pricey but just loaded with features. The ultimate WB it seems.

The newer FAST LS2 and LS7 injectors are real nice to work with. I am running the 50#ers and they dial in very nicely. They go up to 65#.
...

Actually the 08 LS3 uses a different sensor, but currently the only PCM OS that can read it is the 08 Vette LS3. The brains are in the OS so the rest of us are stuck @511 g/s. A 100mm MAF may flow...

Try them both and let us know what works. I have.

The difference in sq mm area between 78 and 90 mm minus a fudge factor. It has worked well on two cars including my own. Try it or don't, it is up to you.

Try ~.0300 up to ~.0330

I am in the middle of this now and found the further from stock (.0255) I got (either direction) the more the idle degraded.
I know this does not make sense, thus I am all ears
...

Yes!