nmcqueen469

iTrader: (24)

My winter build consists of adding worked 243s, a FAST 90, PTM 92 TB, and 42lb injectors to the mods I already have in my sig, among other things non-engine related.

I'm wondering now about where my greatest point of restriction will be. Will it be my stock MAF, or will that still support the airflow my engine will be pumping?

Would a 100MM MAF be overkill for my application?

Fast Toys Performance Parts

iTrader: (3)

I don't think you would NEED the 100mm MAF at your power level but I'd recommend you least upgrade to the 85mm MAF and a larger air lid.

nmcqueen469

iTrader: (24)

I'm air-lid-less. 2004 GTO.

Fast Toys Performance Parts

iTrader: (3)

Then just do the MAF. You can pick up any 85mm MAF but you are going to have to get a tune to make it work properly.

t/a98

iTrader: (6)

pretty sure 04s had 85mm mafs right?

Fast Toys Performance Parts

iTrader: (3)

I believe the 04's just had the small maf (last year of LS1).

nmcqueen469

iTrader: (24)

Not exactly sure, I figured they are 78 like the TBs.

hivoltagedriver

iTrader: (1)

Stock '04 is 78mm. Check out SNL's 100mm MAF. It is what I'm running, but you will need to have it tuned.

Trevor.j

iTrader: (10)

do you know if your tuner had a hard time with that maf? i hear tsp maf was a bit on the tuff side to tune so im looking in for other options

dgcustomz

iTrader: (127)

Why not just go speed density? No need to spend the extra cash on the mass air flow sensor. Gotta get it tuned either way.

JaS5902

iTrader: (12)

I talked to the guys at EFI Alchemy and they recommended the new style 100mm MAF. He said they've tuned a few cars w/ it & liked it alot. Since it looks like you'll be getting a new tune w/ all that stuff anyways it seems it's like one of those might as well mods.