another boost guage question

[warpz0r]

hi all

i have a rb20det in my vl commy

im going to install a boost guage but i keep reading to install it up near the plenum?

wouldnt you install it closest to the turbo so i know what pressure the turbo is putting out and not what pressure the plenum is recieving after going round pipes and through the intercooler?

thanks

[josh303]

hey mate, i would install it as close to the plenum as possible so you know exactly what boost the engine it getting after the boost drop has occurred in the plumbing, there wont be alot of boost drop though unles you have a leak.

i think it's just better to know what the motor is getting??

[warpz0r]

well im running the stock turbo, and the engine can handle way more than what the turbo can produce..?

[josh303]

i guess it just comes down to personel preference in the end??

it wont really make alot of difference where you hook it up, just do it in the most convenient place, away from heat sources (exhaust) to protect the hose. try make the hose as short as possible so your guage respondes quicker.

[warpz0r]

so basically instead of running 1 hose to the charcoal cannister i can run it to my boost guage?

[R32Big_boy]

Just put the adaptor that you get with the gauge onto the back of the plenum where the factory boost gauge gets its reading from. Its facing the firewall, the fitting should screw stright in.

[blind_elk]

If you are running a stock ceramic turbo, then it's probably safest to get the signal at the compressor. Then you can be safe in the knowledge that the exhaust wheel is not going to let go and de-glaze your bores.

If you have a steel exhaust wheel, then it's probably best to know exactly how much boost the engine is trying to ingest, and therefore pick up the signal at the plenum.

[MonstaS4]

If it is a combined boost/vac guage, it won't read any vaccuum if you connect it before the throttle body.....not that that really matters anyway!

[gtst25]

Just get two of them - would be pretty cool!

[warpz0r]

ive just got the guage.. i do have a little screw piece though from somewhere that should allow a small hose to be hooked up to it...

but where closest to the turbo would u do it? on the wastegate? blow off valve?

[Col-GTSX]

Jun's 1000hp R33 GTR has 2 boost gadges and 3 water temp gadges...

1 x boost at turbo

1 x boost at plenium

1 x temp inbetween cyl1-2

1 x temp inbetween cyl3-4

1 x temp inbetween cyl5-6

Thats the only way to have all the info i guess......!!! (Too much money)

[predator]

Just put the adaptor that you get with the gauge onto the back of the plenum where the factory boost gauge gets its reading from. Its facing the firewall, the fitting should screw stright in.

Thats what I did when installing mine in the new car the other day.. The adapter screw fits into the standard plenum position perfectly (was a Speco gauge and std. kit it comes with). Unscrew the stock one, screw direct in the plenum. All done - nice plenum reading.

[Jengi]

A 1000hp package requires that degree of monitoring given that you're sitting on a hand grenade and the gauges alone are worth a fair bit. It helps that JUN have deep pockets too. For our needs, I believe one of each gauge is more than adequate.

But of course if you want 50x gauges, then the spank factor is always good I guess