DIS vs Individual coils
EFISYSTEMS at aol.com
EFISYSTEMS at aol.com
Sat Nov 14 02:24:12 GMT 1998
In a message dated 11/13/98 6:11:06 PM Pacific Standard Time,
nacelp at bright.net writes:
<< Subj: DIS vs Individual coils
Date: 11/13/98 6:11:06 PM Pacific Standard Time
From: nacelp at bright.net (Bruce Plecan)
Sender: owner-diy_efi at efi332.eng.ohio-state.edu
Reply-to: diy_efi at efi332.eng.ohio-state.edu
To: diy_efi at efi332.eng.ohio-state.edu
On turbo applications running high boost/big cams has anyone
here actually had a problem with not being able to retard the
timing enough to make max HP, due to an intake tract popping
occuring? ie lighting the open intakes AF mixture.
Not with oem cams, but longer duration aftermarket stuff.
Other than for individual cylinder timing control is there any reason
to go to individual coils?.
Cheers
Bruce
Hiya Bruce,
Seems to me the magic number was to not open the intake valve more than
40 degrees BTDC,,,,otherwise BOOM when the overlap cycle ignites the fuel
mixture because of too much mass flame trying to exit the exhaust
port.......Blowers tend to get real expensive when you think it's something to
do with the AFR and not the camshaft....hth's
-Carl Summers
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