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Old 10-05-2006   #3
gofastman
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Join Date: Sep 2006
Location: Roseville, MN
Drives: 95 Jeep
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Re: what could cause studdering/chugging?

Quote:
Originally Posted by ecoli
What car, motor, turbo, rest of the setup? What are the airfuels? What plugs/gap? Could be way too rich or way too lean. Could be plugs or ignition problem. Could be a boost leak. Could be fuel cut. A car with that much E85 in it will run considerably leaner than on straight pump gas. A lot of people can run 20+psi on normal pump too.
Oh yea haha, '91 TSi, e16g, dsmlink, stock wires, 1 step colder plugs, plx 300, aeromotive FPR, Walbro 255.
I know stoich. for ethanal is richer than gas (what, 9:1?) wont the wideband still read 14.7:1 when stoich.?
we were shooting for 11:1 ratio, I think it was slightly leaner
the car was just pressure tested for leaks and checked out.
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