Thinking of purchasing the unit very soon.
For the people who have it, how do you like it?

 

I've been meaning to respond to your post for a while. I have been running the MAFTpro sinc January and have been very happy with it. There were a few issues with the early firmware, but it is much better now. Some things to take into consideration before diving into the MAFTpro:

Tuning the MAFTpro is not like tuning a SAFC. You have to start by creating an entire Volumetric Efficiency table for your car. You do this running the car with the MAS and comparing the MAF measured flow to the calculated speed density flow and adjusting until the numbers match up. After you get the volumetric efficiency table working, you have to adjust your throttle and boost response settings. These settings take quite a while to set up, especially if you do not have a dyno on which you can hold your car at specific loads. It took me a few months to finally get my VE table dialed in. If you have someone do your initial tune it is pretty easy to tweak it after the fact.

Every time you add a new mod you must retune everything. Unlike when using a MAS-based setup, you have to retune every area of your map when you change a part on your car. This includes idle, cruise loads, part-throttle acceleration, WOT, and response settings. With most MAS-based setups you can leave everything except WOT alone and the setup will work fine.

It is much easier to blow up your engine with the MAFTpro. Unlike the SAFC, utec, or other piggy-backs, you are not just adjusting by a percentage from the stock map, you are recreating a new base map with the VE table. If your VE table is too far off, or your response settings aren't aggressive enough you can go dangerously lean while under high boost. This is not a novice tuning device.

Now, on to the good stuff. The closed-loop boost control is great. I adjust the boost the same way I would with a MBC and end up with taper. Then I add in a boost set point and a gain which will adjust my duty cycle to keep the boost as close to my set point as possible. This allows me to run 21 psi with very little spike and less than 0.5 psi taper.

The closed-loop fueling is also very nice. I tuned the system to ~11:1 without the closed-loop turned on and would have significant variations in AFR as I would run through the gears. With the closed-loop turned on my AFR stayed between 10.8 and 11.2 during a 1st through 4th gear pull.

All-in-all I'm very happy with the MAFTpro. Just plan to have someone else tune it or to spend a lot of time getting it set up right. If you buy it from TTP Engineering, Scott will help you with any questions you may have.

-Paul

 

The MAFT Pro can be run like an SAFC, using your stock MAF, which simplifies everything. In this mode all of the other benefits are still available, i.e. boost control, closed loop WOT AFR, etc.

That said, in speed density mode it is an extremely powerful device. Not for the novice.

Paul, in AFC mode what would you estimate the 'expertness' factor?

Bob

 

In AFC mode it's just as easy to use as the AFC. Plus it's like an AFC, boost controller, and data logger all built in to one. On top of all that you still have the closed-loop fuel control that will help keep your A/F ratios consistent. In my opinion it's a much better option than an AFC and a boost controller.

-Paul

 

Kinda the way I feel. Run it in AFC mode for a while. Then as the user gains experience, you can pop the screens out of the MAF, or switch to a GM MAF. Then graduate to Speed Density as the tuner's experience grows......

I'm working on some part throttle and idle closed loop stuff, with lean cruise. So you can force the ECU to run open loop all the time and close the loop with the MAFT Pro and run 16.2:1 while cruising and get great fuel economy......

Bob

 

Paul is a great asset to the MAFTPro users with his technical understanding of the unit. I have personally used this for months now. Ran 11.24@123.6x last night infact. Multiple maps switching is excellent and with the maftpro you can use failsafes for meth injection to drop the tune back on a pump gas map if something goes wrong with the meth system.

I have a few full systems with boost control and speed density on the shelf ready to ship.

 

I've also been thinking about getting this. I have a very good base tune from TT, but I would like to add alky kit and maft pro. I want to be able to switch the alky on and off. Meaning, I only want to use it when I need it. Can this be done?

 

This is exactly how we have it set up. Pumpgas 21psi with no meth and with switch on, max boost + meth + map2 FTW.

 

That is exactly what I am looking for.

 

Gonna like it much better with TIMING CONTROL!

Testing this week. If all goes as well as it does on the DSM's and Turbo Buicks and Toyotas, it will add to the long list of features available with the MAFT PRO!

 

this questions a bit off off topic but can u use the MaftPro like a Maft like dsms and use to to prevent ur car from stalling and drive like NA if an intercooler pipe blows off??

 

Yes, and in fact this actually happened. Blew a hole in a coupler and switched it to speed density setting, drove it home.

 

Please realize this thread is 14 months old since the last post.

 

oh crap mybad i didn't see that thanks man