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Re: 2.8 bar vs 3.0 bar question
Posted by SWEDISH DYNAMICS (more from SWEDISH DYNAMICS) on Sat, 17 Feb 2001 20:09:08
In Reply to: 2.8 bar vs 3.0 bar question, BobJ, Sat, 17 Feb 2001 17:31:21
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Bob,
Larger fuel injectors(depend. on sizing/flow) will normally require slightly lower pressures at idle. Running a 3.0 bar or higher fpr may result in rich idle tendencies. This will normally require the use of the factory turbo 2.5 bar fpr but additional fuel can be brought in under higher boost pressures by implementing a "piggyback" rising rate fuel pressure regulator which is placed in between the factory 2.5 bar regulator return line. Another option would be to install a rail OEM replacement rising rate fpr (such as the SPG9 unit) which allows for adjustable pressures at idle as well as under boost.
In many cases, the use of a larger injector on a modestly upgraded vehicle will supply sufficient fuel while implementing the factory 2.5 bar fpr. It might be a good idea to have your CO checked under boost to dictate your next course of action.
Good luck and regards,
SWEDISH DYNAMICS
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