card style maf.
Thread Starter
Teching In
Joined: Dec 2019
Posts: 41
Likes: 1
It stumbles when the light comes on. I'm considering breaking them out and running them across the back of the firewall, along the fender to the core support. I've got a friend fairly close that has done some tuning and is going to take a look at it in a couple of weeks. It's had P0101 and P0102..
It stumbles when the light comes on. I'm considering breaking them out and running them across the back of the firewall, along the fender to the core support. I've got a friend fairly close that has done some tuning and is going to take a look at it in a couple of weeks. It's had P0101 and P0102..
Thread Starter
Teching In
Joined: Dec 2019
Posts: 41
Likes: 1
I noticed that maf frequency was noted before. I'm not sure how to do that. Perhaps my friend has the equipment for that. It runs fine, it does a quick stumble when the ses comes on. It smells like it's to running rich, and gas milage isn't the best. My friend did smooth out the timing and adjusted the fuel curve. He said it was 20% high across the board. I'll check it tomorrow when I fill up.
Thanks.
Thanks.
I noticed that maf frequency was noted before. I'm not sure how to do that. Perhaps my friend has the equipment for that. It runs fine, it does a quick stumble when the ses comes on. It smells like it's to running rich, and gas milage isn't the best. My friend did smooth out the timing and adjusted the fuel curve. He said it was 20% high across the board. I'll check it tomorrow when I fill up.
Thanks.
Thanks.
Staging Lane
Joined: Mar 2019
Posts: 53
Likes: 14
i pulled up your last scan, and at idle (711rpm) youre at 2,928 hz, 1.12 lb/min and map is at 41 kpa
for comparison:
Alice (my truck) at idle (750rpm) is 2,947 hz and (unrecorded) map is 66 kpa
2003 tahoe idle (708 rpm) is 3,096 hz, 1.27 lb/min and map is 60 kpa
2001 camaro idle (797 rpm) is (unrecorded) .84 lb/min and map is 29 kpa
2004 silverado idle (654 rpm) 2,943hz, 1.31 lb/min and map is 61kpa
So until we can scan your truck and see specifically what is going on, from what your old scan shows (june 6th) I dont see anything odd. But, you have made some changes since then, move the MAf into a different location, change the intake tube and shape, and that all will thorw the MAF tune off.
So currently at this point, the card MAF or the 'tube' MAF question is a mute issue as the tune will be off no matter what.
I would like to make you an aluminum CAI tube, and mount the card MAF in the bottom/lower section so you dont see it, retune the ECM and be done with it.
for comparison:
Alice (my truck) at idle (750rpm) is 2,947 hz and (unrecorded) map is 66 kpa
2003 tahoe idle (708 rpm) is 3,096 hz, 1.27 lb/min and map is 60 kpa
2001 camaro idle (797 rpm) is (unrecorded) .84 lb/min and map is 29 kpa
2004 silverado idle (654 rpm) 2,943hz, 1.31 lb/min and map is 61kpa
So until we can scan your truck and see specifically what is going on, from what your old scan shows (june 6th) I dont see anything odd. But, you have made some changes since then, move the MAf into a different location, change the intake tube and shape, and that all will thorw the MAF tune off.
So currently at this point, the card MAF or the 'tube' MAF question is a mute issue as the tune will be off no matter what.
I would like to make you an aluminum CAI tube, and mount the card MAF in the bottom/lower section so you dont see it, retune the ECM and be done with it.
Thread Starter
Teching In
Joined: Dec 2019
Posts: 41
Likes: 1
I can live with that. I'm guessing we'll have to move the wiring and make it longer also. I'd like to be able to go on some long runs, with decent milage, and not have the ses light staring me in the face...
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