Quote:
Originally Posted by persian54
I'm going to upgrade from a Jb+ to a Jb3 soon
since I don't plan on running more than map 3, MAYBE map 5 if i find 93+ octane, do i need a gauge?
or would it be purely cosmetic?
Also, typically, how much does it cost for a boast gauge install?
Thanks in advance.
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Yes, you need a boost gauge on a tuned 335i. It shows whether your system is wealthy or you have a problem by measuring the vacuum and boost pressure. A datalogger might be a good idea as well, but it shows problems usually after the fact ( at least I am not able to drive progressive and watch a laptop display ) which might be too late.
Cheers,
Eugen