how much can a stock 75mm maf sensor flow
04-11-2009, 05:48 PM
#1
how much can a stock 75mm maf sensor flow I am installing my Forged LS6 now and tunning will be very important when the time comes.
For the street i want to retain the MAF sensor set up
i wanted to know what a stock LS1 75MM MAF sensor flows
and a SLP or ZO6 85MM MAF sensor flows.
I will be pushing 15 PSI with a D1-sc Ptrocharger and looking to make about 700 RWHP . Max RPM will be around 6,500
there is a CO that sells new high flowing MAF sensors here on tech, and they are able to flow boost and high HP 1,000 + HP
Standard DBX 85 flows to 3700 KGH Supports up to 1000 h.p.
Special order DBX 85 flows to 4800 KGH Supports up to 1300 h.p.
and info would help me
Thank you
For the street i want to retain the MAF sensor set up
i wanted to know what a stock LS1 75MM MAF sensor flows
and a SLP or ZO6 85MM MAF sensor flows.
I will be pushing 15 PSI with a D1-sc Ptrocharger and looking to make about 700 RWHP . Max RPM will be around 6,500
there is a CO that sells new high flowing MAF sensors here on tech, and they are able to flow boost and high HP 1,000 + HP
Standard DBX 85 flows to 3700 KGH Supports up to 1000 h.p.
Special order DBX 85 flows to 4800 KGH Supports up to 1300 h.p.
and info would help me
Thank you
04-13-2009, 10:32 AM
#2
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It'll flow a sh!tload at a reasonably low pressure
drop, descreened. However the PCM will not be
able to deal with more than 511g/sec or 12kHz
output frequency without faulting. That is maybe
5-600HP or so, depending on how efficient the
motor is.
"Supports" such-and-such HP or flow is swell,
but the MAF is only one sensor in the system and
you will probably be looking at a lot of tricks if
you want to stick with the stock hardware and
OS. Probably better off with a custom multi-bar
speed density OS in the end. To handle the
2-bar expected MAP levels in transient-throttle
operation you will need a 2-bar OS and all the
ones I know of ditch the MAF, first thing. MAF
will absolutely fail to cover the throttle-mash,
full boost scenario (and that's the whole point,
more or less, right?)
In fact on the street the MAF is a pretty small
contributor, it is used at a partial weighting at
lower RPM and isn't "all in" until >4000RPM. Don't
know about you, but 4000+RPM and steady MAP
is not something I get much time at, on the street.
Maybe 2-3 seconds at a time. With a big *****
blower, make that one second.
drop, descreened. However the PCM will not be
able to deal with more than 511g/sec or 12kHz
output frequency without faulting. That is maybe
5-600HP or so, depending on how efficient the
motor is.
"Supports" such-and-such HP or flow is swell,
but the MAF is only one sensor in the system and
you will probably be looking at a lot of tricks if
you want to stick with the stock hardware and
OS. Probably better off with a custom multi-bar
speed density OS in the end. To handle the
2-bar expected MAP levels in transient-throttle
operation you will need a 2-bar OS and all the
ones I know of ditch the MAF, first thing. MAF
will absolutely fail to cover the throttle-mash,
full boost scenario (and that's the whole point,
more or less, right?)
In fact on the street the MAF is a pretty small
contributor, it is used at a partial weighting at
lower RPM and isn't "all in" until >4000RPM. Don't
know about you, but 4000+RPM and steady MAP
is not something I get much time at, on the street.
Maybe 2-3 seconds at a time. With a big *****
blower, make that one second.
