72 4x4 MP T70 turbo 5.3 and bags buildup
11-12-2007, 06:19 AM
#91
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Wow, I have no idea how I missed this thread, but what an awesome project and you've got some amazing fab skills. Everything looks beautiful. Looking forward to more updates.
11-12-2007, 03:30 PM
#97
The MAP sensor and the MAF sensor are not interrelated. Most people ditch the MAF and go with a speed density tune when they go up to a 2 bar MAP, but it's not necessary. The thing that "turns off" the MAF is either disconnecting it or setting the MAF fail frequency really low. You can always run MAP alone, MAF alone, or a combination of the two regardless of what type of MAP sensor is used.
Despite all of this, Kyle may just be using the MAF sensor for the embedded IAT sensor. Who knows, he's a crazy guy
Despite all of this, Kyle may just be using the MAF sensor for the embedded IAT sensor. Who knows, he's a crazy guy
Last edited by thunder550; 11-12-2007 at 03:36 PM.
11-12-2007, 03:38 PM
#98
yeah i went and did alittle searching over there. i guess most people just turn it off. now what about the whole thing where they say the maf takes over at 4000rpm. doe sit only take over till it gets maxed out? sorry not trying to jack the thread just wondering.
kbracing96 GREAT job. looks sweat.
kbracing96 GREAT job. looks sweat.
11-12-2007, 04:04 PM
#99
There's a setting in the tune that identifies where the MAF takes over exclusively. From the factory it's 4000 RPM, but it's changeable. If the tune is set to run MAF only above a certain RPM and you exceed the limits of the MAF, the engine will not continue to compensate for increasing airflow. That = 
Most who are making enough power to max out the MAF go SD. I'm guessing you can set the tune up to run off the MAF till a certain point then go to VE tables too. Not 100% on that, but the tunes are really flexible so I'm assuming it can be done.
Most who are making enough power to max out the MAF go SD. I'm guessing you can set the tune up to run off the MAF till a certain point then go to VE tables too. Not 100% on that, but the tunes are really flexible so I'm assuming it can be done.
11-12-2007, 04:27 PM
#100
Ya, what Chris said, 
. Actually, I'm gonna keep the MAF for now and a 1 bar, cus I can't find the damn 2 bar MAP I bought for this thing almost a year ago, 
But will most likely still leave the MAF on there even after I put the 2 bar on. I have ran my truck both with and with out it and doesn't seem to make much difference to me, seem to compensate a little better with it and changing climates and altitude and since I wont always be around to adjust the tune from time to time I think it will be a better fit for pops. We are only gonna run around 6-8 psi of boost, so it shouldn't be maxing out the MAF.
. Actually, I'm gonna keep the MAF for now and a 1 bar, cus I can't find the damn 2 bar MAP I bought for this thing almost a year ago, But will most likely still leave the MAF on there even after I put the 2 bar on. I have ran my truck both with and with out it and doesn't seem to make much difference to me, seem to compensate a little better with it and changing climates and altitude and since I wont always be around to adjust the tune from time to time I think it will be a better fit for pops. We are only gonna run around 6-8 psi of boost, so it shouldn't be maxing out the MAF.