Sup w/them 2024 Summer Projects?
#4427
Evolved Member
iTrader: (29)
so - replacing the UICP & turbo inlet tube. I think my intake currently only uses 1 vac line, the new one has 2. I was recommended to just install & cap off the unused one. re: the connections to the BPV, hoepfully it'll just be a 1 for 1 change. The positioning might be a little tricky/require some angled hoses to connect the BPV to both parts, but otherwise this is relatively straightforward, correct? I might even be able to do it while leaving the front bumper on, seems like there will be enough room.
#4428
EvoM Guru
iTrader: (41)
so - replacing the UICP & turbo inlet tube. I think my intake currently only uses 1 vac line, the new one has 2. I was recommended to just install & cap off the unused one. re: the connections to the BPV, hoepfully it'll just be a 1 for 1 change. The positioning might be a little tricky/require some angled hoses to connect the BPV to both parts, but otherwise this is relatively straightforward, correct? I might even be able to do it while leaving the front bumper on, seems like there will be enough room.
#4430
EvoM Guru
iTrader: (41)
I haven't had a MAF on my car since 2008, but I know that when I swapped to a metal intake back in my MAF days, I immediately had issues with running lean in low RPM conditions (stalling in intersections) and a change in AFR in open loop WOT conditions. It makes a difference. If you have confidence in your tuner, next time get an SD conversion so you don't need to worry about it or not being able to drive back to the pits if you blow off an IC coupling on track.
The following users liked this post:
Kevin. (Feb 23, 2022)
#4431
Evolved Member
iTrader: (29)
I haven't had a MAF on my car since 2008, but I know that when I swapped to a metal intake back in my MAF days, I immediately had issues with running lean in low RPM conditions (stalling in intersections) and a change in AFR in open loop WOT conditions. It makes a difference. If you have confidence in your tuner, next time get an SD conversion so you don't need to worry about it or not being able to drive back to the pits if you blow off an IC coupling on track.
#4435
EvoM Guru
iTrader: (41)
I’m not trying to say that a non-stock inlet pipe is bad. It just alters the MAF signal, so your AFR changes in open loop conditions and your trims change in closed loop. I think it leaned out the low end and richened the top end on my car before tuning for it. These pipes are not all the same and don’t affect the MAF readings similarly from one pipe to another though. Mine has an S bend FWIW. The upper IC pipe shouldn’t matter unless your BOV changes and leaks less or more.
#4436
Evolved Member
iTrader: (29)
I’m not trying to say that a non-stock inlet pipe is bad. It just alters the MAF signal, so your AFR changes in open loop conditions and your trims change in closed loop. I think it leaned out the low end and richened the top end on my car before tuning for it. These pipes are not all the same and don’t affect the MAF readings similarly from one pipe to another though. Mine has an S bend FWIW. The upper IC pipe shouldn’t matter unless your BOV changes and leaks less or more.
#4437
EvoM Guru
I’m not trying to say that a non-stock inlet pipe is bad. It just alters the MAF signal, so your AFR changes in open loop conditions and your trims change in closed loop. I think it leaned out the low end and richened the top end on my car before tuning for it. These pipes are not all the same and don’t affect the MAF readings similarly from one pipe to another though. Mine has an S bend FWIW. The upper IC pipe shouldn’t matter unless your BOV changes and leaks less or more.
#4440
EvoM Guru
Yea, correct me if im wrong but as i understand it the MAF is reading the volume of flow past the sensor and then it has a known volume and therefore time before that volume of air reaches the combustion chamber and if you go and make the flow path twice as long or twice as wide for example that whole calculation is now incorrect.
I would assume if you had a intake pipe the exact same length and diameter as factory you wont have an issue but if you change either of these parameters it will affect the MAF calculation?
I would assume if you had a intake pipe the exact same length and diameter as factory you wont have an issue but if you change either of these parameters it will affect the MAF calculation?