2003 Town Car - Change MAF size

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canadastang
Posts: 2
Joined: Fri May 19, 2017 1:14 pm
Vehicle: 2003 Lincoln Town Car

2003 Town Car - Change MAF size

Post by canadastang » Wed Aug 16, 2017 3:35 pm

Hi everyone, I've got a 2003 Lincoln Town Car with the 4.6.

I'm doing a few bolt on mods to the car to make it less slow (not faster lol) and one popular mod is to swap in an 80mm MAF from a Marauder.

I have the MAF and airbox sitting at home, but I'll need a custom tune either through SCT, Diablo, HP Tuners, etc. since the stock MAF size is 70mm.

My question is this: Can the Forscan program be used to reprogram MAF sizes or is this something that only a custom tuner can do?

Todd Ector
Posts: 94
Joined: Mon May 18, 2015 1:33 pm
Vehicle: 2004 F150 XLT , 5.4 3v sohc 300hp
Location: Elbow, Saskatchewan, Canada

Re: 2003 Town Car - Change MAF size

Post by Todd Ector » Wed Aug 23, 2017 6:17 am

Hi there, no you can not do that currently with Forscan as they haven't enabled editing of the PCM yet.

Even when they do I'm not sure that this will be possible, it isn't a option you can toggle on and off but requires a complete remapping (or tune) of the PCM to compensate for the change.

I studied this in depth when I had the 2004 Ultimate but really didn't want to put a tuner on it, haven't decided yet but I may do it to the 2010 though.

NM117
Posts: 20
Joined: Mon Apr 03, 2017 3:58 am
Vehicle: 2006 crown vic p71

Re: 2003 Town Car - Change MAF size

Post by NM117 » Sat Aug 26, 2017 3:04 am

Ah you doing the mzt , what other mods have you done?what is current miles? The 4.6 is no sluch.for the time being you can change the tube and leave the maf alone to minimize restriction .

canadastang
Posts: 2
Joined: Fri May 19, 2017 1:14 pm
Vehicle: 2003 Lincoln Town Car

Re: 2003 Town Car - Change MAF size

Post by canadastang » Thu Sep 07, 2017 4:04 pm

Hi, thanks for the info

The cars only got 100k kms on it.

So far I have a 70mm throttle body from a 5.4 van, trick flow plenum, underdrive pulleys, and once I get a tune, I'll install the Marauder maf with 2004 p71 zip tube that I picked up.

martin123
Posts: 29
Joined: Wed Jul 15, 2015 5:24 pm
Vehicle: transit connect 2003 1.8 tddi

Re: 2003 Town Car - Change MAF size

Post by martin123 » Sat Sep 16, 2017 10:22 am

Why change maf? Adjust tune to suit current maf

NM117
Posts: 20
Joined: Mon Apr 03, 2017 3:58 am
Vehicle: 2006 crown vic p71

Re: 2003 Town Car - Change MAF size

Post by NM117 » Mon May 07, 2018 11:33 pm

martin123 wrote:Why change maf? Adjust tune to suit current maf
The intake is a different size ,the +04 maf is the correct one for that intake

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