Tuners
Tourer
Joined: Dec 2008
Posts: 446
Likes: 0
From: Wilmington, NC
Yes, they work only in closed loop. Under WOT your MAF, VE, and PE tables take over, this also requires the use of a wideband sensor for proper tuning.
For the gentlemen looking for EFI info I believe there is a thread call "EFI 101" or something like it, with more information than you'd ever care to know!
For the gentlemen looking for EFI info I believe there is a thread call "EFI 101" or something like it, with more information than you'd ever care to know!
Last edited by Pepsimayn; Jan 13, 2009 at 10:09 PM. Reason: info
Club Member
Joined: May 2006
Posts: 14,564
Likes: 9,225
From: the 50s & the 60s
With the Screaming Eagle Race Tuner
tuning is accomplished on the dyno
by someone who knows what to manipulate in the available parameters.
And there are hundreds of variables.
The way my map (not MAP) is built, the o2 sensors never come into play.
Everything that the ECM knows and does
was set up to do what we wanted
(135 ft lbs torque from 2200 rpm to 4500 rpm).
mud
Elite HDF Member
Joined: Sep 2008
Posts: 4,440
Likes: 148
From: Northwest
With the Screaming Eagle Race Tuner
tuning is accomplished on the dyno
by someone who knows what to manipulate in the available parameters.
And there are hundreds of variables.
The way my map (not MAP) is built, the o2 sensors never come into play.
Everything that the ECM knows and does
was set up to do what we wanted
(135 ft lbs torque from 2200 rpm to 4500 rpm).
mud
tuning is accomplished on the dyno
by someone who knows what to manipulate in the available parameters.
And there are hundreds of variables.
The way my map (not MAP) is built, the o2 sensors never come into play.
Everything that the ECM knows and does
was set up to do what we wanted
(135 ft lbs torque from 2200 rpm to 4500 rpm).
mud
That makes systems like the PCIII(+) even more attractive.
Tourer
Joined: Dec 2008
Posts: 446
Likes: 0
From: Wilmington, NC
Speed density and or complete open loop rely on the calculation of air density/temp and MAP to run correctly. To tune this way i.e. with a PCIII is a lot less exact and in the way of cagers' speed density tuning is very complex.
Better left on the track, IMO
Cruiser
Joined: Apr 2007
Posts: 198
Likes: 0
From: Wellington, NV
So I assume that the PC V takes care of this problem, since you can keep the O2 sensors plugged in ??? I also would hate to spend 800.00 for the SE plus dyno when teh PCV would work!
I am so confused!
I am so confused!
Tourer
Joined: Jan 2008
Posts: 417
Likes: 0
From: cambridge ohio
you don't keep the 02 sensors with the PCV it uses 02 eliminators just like PC3.,unless you upgrade to the autotune modules and wide band sensors.
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