The first lines of your post keep getting cut off....
Ram 360? (I hope)... You may also be seeing the limiting flow capacity of
the intake manifold and heads...Also it has been noted theat the stock PCM
tends to keep the injectors at a max duty rate of 80%, on a 318 you have
some head room, but by using the same injectors on a 360 they limit power at
the higher RPMs (4700+) Its just a theory since I dont have the code in
front of me... But you can watch the pulse width stabilize and not "fatten"
at higher RPMs no matter the demand. It is a truck motor...Bigger
injectors dont really help much if at all ( Ive got em installed in my
R/T...)since the computer is able to compensate under closed loop, and it
appears the duty cycle rolloff is a "fixed" protocol in the computer for WOT
performance and not dependent on the feedback loop.
Just a theory,
BKB
-----Original Message-----
From: H62300@aol.com [mailto:H62300@aol.com]
Sent: Tuesday, February 23, 1999 5:08 PM
To: dakota-truck@buffnet.net
Subject: Re: DML: RE: fuel starvation
7s.I seem to be leaning out after 4700 RPM.I also changed the valvesprings
to
the HP springs from Mopar.
It also has a MSD 6 with accel coil.I have had enough mopars to know that
I
have run out of fuel.It runs 16 20,s at 84 MPH on the stock computer.Sent
the
Jet back to have them check it out.Anybody have any ideas.Everything seems
to
add torque and the MPI tbi is especially rewarding on the bottom end But no
MPH at the end.
Brian in Ballard
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