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Any DSM owners using GM MAF sensors?
Well?
Are there any DSM owners on this board using a GM MAF sensor and a MAF-translator? I am looking into using this setup, but it is fairly new to the MK3 Supra scene. So what are you experiences with it if you have used one. Thanks. |
I had that on my talon, its pretty good since you can vent to air
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I have one too. I didnt know they were breaking into the Supra market. cool.
Its a great tool. I have mine in blow-thru setup so I can run just a turbo to each filter and measure on the pressure side. works great, but make sure your turbo isnt blowing oil, as it can get on the sensor and gum it up. ITs great for adapting to larger injectors, but the fine tuning is a little weak. Seems to be pretty big increments in the adjustments, and weather hanges can affect your tune. Ultimately it would be best to run an AFC as well, but then you are running a piggyback on top of a piggyback, and it gets a little much. Im only using the MAFT for tuning now and it took 0.2sec of my quarter. Keep an eye on your SENSORS! what are you using to datalog/read engine conditions? EDIT: your turbo will be twice as loud and the BOV will be louder too. Tells me its moving alot more air. |
I will be using an AFC for tuning and zeitronix wideband to monitor everything. With all the money I am spending on piggybacks I could afford an AEM EMS, but its to late for that now.
Do you know of any problems people have run into with the MAF-T setup? Faulty readings or lean conditions from the translator not doing its job correctly? As far as noise goes, my turbo is already horrificly loud (anti-surge) as well as having a vented external wastegate. :D |
i'm running a maf-t and love it!!!
it basically is a plug n' play affair, i still have to tune with my super afc and laptop come spring... but runs awesome just need to hook up with someone who knows what they're doing |
Originally Posted by mr.mitsu
i'm running a maf-t and love it!!!
it basically is a plug n' play affair, i still have to tune with my super afc and laptop come spring... but runs awesome just need to hook up with someone who knows what they're doing I can take a look at it and try to get a good street tune, if you need it. You have a datalogger? Are you 1st gen? blackout_89t: Havent heard of any real problems. Other than holding a tune over seasons. I would recommend zeroing the settings (or set to the proper correction if you are using larger injectors) and using your AFC for fine-tuning adjustment. I extended the wires and have the box inside the armrest for on-the-fly tuning, but if you arlready have an AFC, just do a set-it-and-forget-it on the MAFT, and leave it underhood. Is your stock MAS a karman-vortex (Frequency output) or mass airflow (Voltage output)? |
Stock AFM is Karman Herz.
I am using 680cc injectors. Thanks for the info! |
sweet...i have a laptop just for my logging
only need an extra set of eyes to look everything over |
No problem. I say go for it. Heres a picture of my setup. Using the 3" in blo-thru to keep the velocity up. (those are crappy clamps. If you are going over 15psi, get proper silicone couplers. These things blew apart a few times.)
http://www.mustangmods.com/data/1104...eanandmaf3.jpg Mitsu, if you are going to the DSM Yorkdale meet on the first sunday of April, I will be there, and could go for a run with you. |
^^^ i work sundays so i can't make the meets...
i'll pm you |
Sasha was making an interesting point on sequence garage's forum that seems to make sense. It pertains to running multiple MAF's as opposed to one big one, but in this case it deals with the KA24DE. I'm sure you guys can figure it out for your own application.
To run the wires for the extra mafs just tap the other mafs 12v and ground, black ground black with white stripe is power, then run the signal white on your secondary mafs (white) to the S-AFC, dont even worry about bringing it to the ECU, theres no place for it there anyways. It has 2 inputs for airflow meter so you put one KA one on each, and then in Sensor CALC mode you go IN 2 Out Ave (average of the 2). This should support almost 500hp which will be more than enough, and the best part about it is its cheap cheap! Infact, more people should do this rather then buying a Z32 mafs, a lot of guys in japan run a 4" pipe that splits into 2 2.5" pipes that run to 2 mafs, i think it would be much cheaper to create this and pay 50$ for a sohc mafs than to buy a Z32 mafs, and it will flow more! You need an S-AFC if you have a Z32 mafs anyways, so why not? Anyways back on topic, using 380cc injectors instead of your stock 270cc injectors you need to lower the fuel 40% across the board with the S-AFCII. It seems like any bigger injectors and you'll need a rom tune. Only problem I see is 40% is A LOT for the mafs to be telling the ECU its off by, the further away from stock you are with a piggy back the more your timing may be off. Lower load (which is what the ECU thinks now that you're -40 everywhere) = advanced timing. Not to mention that, you're also in boost. I'm not sure how the stock KA maps are setup, but I think you will be seeing very aggressive timing in boost, consider an MSD Boost Retard to fix that problem. |
Interesting. I didnt know the S-AFC had that capability. That would be great for me as i could have one MAF on each turbo, but like he mentioned, timing would be through the roof as its only seeing half the actual airflow. Advanced timing and 15psi is a bad combination.
would probably work great for an N/A car though. Hmmm, I should look into that. Maybe someone else would be brave enough to try it out first :) Waitaminute, it shouldent average the output, it should ADD them??? "then in Sensor CALC mode you go IN 2 Out Ave (average of the 2)." |
Originally Posted by Fast Eddie
Waitaminute, it shouldent average the output, it should ADD them???
"then in Sensor CALC mode you go IN 2 Out Ave (average of the 2)." |
I am going to have some problems since my injectors are 65% larger than stock, better flowing pump, larger I.D. fuel lines and stock ECU. I will have to take out so much fuel to make the bitch idle. Not to mention the homemade intake manifold, that should make for an even more interesting idle...
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