I believe IDI's are restricted to a single jet of fuel directed at the impingement ball. You can improve injection efficiency by installing larger pump elements which of course, has the potential to injector a larger quantity as well as shortens injection duration.
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-Evan
Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63
Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250
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