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Any disadvantage to using a 4 bar fuel pressure regulator?

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Old 07-24-2007, 10:37 PM
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Default Any disadvantage to using a 4 bar fuel pressure regulator?
I think the TTs come with a 3 bar regulator and was thinking about getting a 4 bar. Just got chipped and though it would be a good idea. Any comments or suggestions would be appreciated. Thanks.

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Old 07-24-2007, 11:07 PM
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Default Yep... stick with the 3 bar unless your chip requires additional fuel pressure, or
you've replaced your MAF housing with one that's "tuned" (see the "ModShack")...
At 4 bars you'll run over rich and will likely throw "CELs"...
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Old 07-25-2007, 03:26 AM
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Other than screwing up your fuel/air mixture and throwing a code? No.
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Old 07-25-2007, 03:50 AM
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do it only wth a modified MAF(bigger)
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Old 07-25-2007, 04:13 AM
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Look into the Modshack stage 2 for that kind of change.
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Old 07-25-2007, 04:42 AM
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No problems here with chip and larger MAF. See TTSchwing for larger MAF,
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Old 07-25-2007, 04:49 AM
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Default More is not better,,....>>
Unless you've done some other things to take advantage of it. A 4 bar will just make your car run richer and slower.
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Old 07-25-2007, 05:16 AM
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not worth using unless you're getting more air in there as well.
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