alanpv
Active Member
- Joined
- Aug 20, 2018
- Threads
- 2
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- 37
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- Location
- Central MA
- First Name
- Alan
- Vehicle(s)
- '17 Mustang GT Premium
Do you guys just have your engine cover just zip-tied on?
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I was concerned about extra engine noise without the cover but no such issue ... mine is off.Do you guys just have your engine cover just zip-tied on?
Thats a really low lb/min. Didn't even hit 40.So I finally got around to doing a 3rd gear datalog on my DashCommand app to see if the MAF airflow decreases at all above 6500 or so and here's what I got at a few top end rpm's:
6052 = 36.11 lb/min
6462 = 38.56
7010 = 39.62
I'll try and go to fuel cutoff next time but no drop in airflow which I THINK means a dyno would not also show a drop.
Timing maxed out at 23 degrees at 7010.
I believe people with CAI's are into the low 40's but I'm happy as is with the stock airbox and the AFE panel filter.
I'm seeing 29 degrees of timing at 7300rpm (WOT), but that was on E-85 w/LUND FF tune.So I finally got around to doing a 3rd gear datalog on my DashCommand app to see if the MAF airflow decreases at all above 6500 or so and here's what I got at a few top end rpm's...
...Timing maxed out at 23 degrees at 7010.
I did not apply any correction factor … it logs a tons of stuff and trims are 1 of them so I can adjust if someone explains how to.Thats a really low lb/min. Didn't even hit 40.
Did you apply correction factor for DA and your Fuel trims?
Can you log on 93 at all to compare? The Livernois tune may be conservative there??I'm seeing 29 degrees of timing at 7300rpm (WOT), but that was on E-85 w/LUND FF tune.
I see 28 on the livernois 93 tune running 94 octane fuel. Your max timing seems way low too.Can you log on 93 at all to compare? The Livernois tune may be conservative there??
You've got a CAI though … I actually have the same one sitting in my basement. I may just install it and the revised tune for comparison.I see 28 on the livernois 93 tune running 94 octane fuel. Your max timing seems way low too.
Stock Mani I see
44.31 lb/min uncorrected
46.54 lb/min corrected @6600 rpm
I highly doubt the F150 Mani flows it's max flow @ 7k+ rpm
Nah I'm exactly like you, pure street car rarely exceeding 6.5K RPM. No drag-strip, Auto-X or road-coarse track events, although, I'd like to do some road-coarse track days at some stage, but that'll probably be once every 6 months or so.To be honest I rarely need to or go past 6500 rpm so I can't say for sure … the graphs posted earlier show it drops around then so I'll assume it does but the benefits of where I drive 99.9% of the time far outweigh the loss I'm experiencing on the 0.1%.
If your % split is skewed differently then you'll have to decide for yourself if it's worth the effort.
It does show that it flows alot less air than even the stock intake though.I just looked over my most recent data-log with the F-150 manifold. Here are my MAF numbers:
6500 rpm - 36.53 lbs/min
6800 rpm - 36.97 lbs/min
7000 rpm - 37.71 lbs/min
7200 rpm - 38.68 lbs/min
7300 rpm - 39.94 lbs/min
I think these numbers clearly show my combo of "truck intake" plus the GT350 CAI isn't gasping for air above 6500 rpm. I don't know how it would differ/compare to the '18 GT manifold, but these numbers show a very linear increase with RPM.
An internal combustion engine can make less hp when ingesting more air. Frictional losses increase as rpm increases, as well as other changes such as intake/exhaust flow wave separation, valve overlap, valve-train harmonics, etcetera . There are other many, many other factors to consider as well that are quite frankly too numerous to list here...Should the intake not be flowing it's max flow @ where it's making peak hp...
...the fact your flowing more air even after you pass the peak hp point of that intake seems weird to me. Still climbing even past 7k.
Anyone else think that's odd?