Blueman33

Does installing a MAF only, not a different turbo, make the turbo spool up quicker, more slowly, no affect....or is it dependant on application and type of MAF?

Everything else is stock 87 951.

Thanks.

SamGrant951

It will spool up sooner as there is less restriction..also the throttle response will be much better than a afm equipped car. With a MAF the car feels better on/off/partial throttle and sounds a million times better - should have came this way!

TRWright

The spool up is MUCH quicker. 'What Sam said.'

ehall

doesn't it also affect air/fuel ratio? Can you add a MAF alone w/out custom chips?

Mike Murcia

The signal from a MAF is different than a signal from an AFM, so you need custom chips anyways.

ehall

Thanks, that's what I always thought. I asked because I think the exact question just asks about the MAF alone, so yes it will help spool up, but, you'll need to address chips and tuning issues to make it work. Blueman may already know this, but if not, atleast we have the info posted.

Blueman33

It appears some MAF's come with chips, some don't.
Autothority comes with chips.
SFR appears not tocome with chips, but to come with PSC1 fuel controller.
Lindsey appears not to come with chips, but to come with Power Perfect or Mafterburner.
Vitesse doesn't say on the website it comes with chips, but it must since the piggy back is a 'recommendation' not a requirement.

Some people imply these fuel controllers will work with any chip. Others say that they only 'fine tune' and that a different chip is required when using a MAF. It is a bit unclear.

I want plug and play, set and go. streetable as can be. i do not want to be adjusting *****.

pikey7

Then the Autothority is the closest you'll get. All the other piggybacks will require a degree of tuning. You have to remember the MAF/MAP upgrade is pretty universal, and goes on cars of different specs, years and mileage. You only have to twiddle the ***** once though. set it and forget it (normally, or until you upgrade)

Just remember the Autothority doesn't have that, and therefore has its limitations (by that read "problems".)

awilson40

Its the next thing on my list to do once I see Johns DIY kit.
Wilk is also working on a bosch maf kit that is suppose to
be a direct drop in replacement for the VAF. Its interesting.

My main consideration is being able to still fine tune the maps on the chip
myself without the need of a piggyback controller.

fast951

Vitesse offers plug-and-play MAF conversion with MAF chips.
Awilson, there will not be any DIY MAF kit for the 951.

awilson40

Bummer, I thought you were planning on doing that.

fast951

No not for the 951 as tehre are many variations..

superloaf

So in addition to the MAF, fuel controller, and chips, what else do you need?

Do you always need a wideband meter?

And for the MAF's that don't come with chips, can you use any set of aftermarket chips and tune them in or are you limited to the stock chips?

Blueman33

Superloaf,

All you need is MAF and chips. Some vendors imply (see my previous post) that their fuel controllers control ANY chip and no chip replacement is needed. Others, like John, who can correct me if i'm wrong, say the fuel controller is to fine tune a chip, which would not imply a stock chip with MAF, but a MAF calibrated chip.

But it's confusing. It appears that lindsey and SFR offer a fuel controller to control any chip using a MAF, but unless someone who has one chimes in.....i'm not sure. Maybe they give you a fuel controller AND a new chip, but from websites it looks like only the controller.

superloaf

But if you have a fuel controller, you always need a wideband to do the tuning, don't you?
So is it better to get the fuel controller+wideband and tune it in or is it better to get the custom chips+MAF and just leave it at that?