boost gauge

[jay200bhp]

guys im looking at getting my supra a mirror face blitz boost gauge,ive read martins article on how to wire it in to the clock and ive made a carbon pod for it too,my only question is do i buy a mechanical gauge as it uses a vac line feed from the inlet .... looking at this one in whifbitz (apologies if im not allowed to post a link just meant for you to have a look?)

http://www.whifbitz.co.uk/gauges-blitz.html

[Martin F]

Mechanical vs. Electronic is always an interesting debate as both have pro's and cons. There is no right or wrong decision TBH, just more down to personal preference.

[jay200bhp]

okay thanks martin ,so in the "how to" boost gauge fitment section is the gauge there that plumbs in to the clock wiring and has a single tee'd off vac line from engine bay through the bulkhead to the rear of the gauge a mechanical one?? what do you run martin?? and how does an electronic version wire in?
j

[Kev.O]

Originally Posted by jay200bhp

okay thanks martin ,so in the "how to" boost gauge fitment section is the gauge there that plumbs in to the clock wiring and has a single tee'd off vac line from engine bay through the bulkhead to the rear of the gauge a mechanical one?? what do you run martin?? and how does an electronic version wire in?
j

As the pipe runs directly to the gauge, this would indicate the gauge is mechanical as the vacuum pressure itself operates the gauge. The gauge could have a back light which would need to be illuminated, hence coming off the clock wiring. An electronic gauge (well atleast my defi one) has a little box that sits in the engine bay. This is where the vacuum pipe connects into. In this box the reading is taken and converted into an electronic signal (resistance I guess though I'm not an expert). This is then passed along the cable to the gauge where it displays the relevant reading. This sort of gauge will require a switched feed as well as a ground and illumination connection.

[jay200bhp]

big help kev thanks !