I need to know if i "Must" have a boost gauge after getting my procharger supercharger installed...i was told for what i'll be doing i really dont need to have it, then i was told that i should have one.....what do you guys suggest?

 

Yes, you def want to have a gauge.

 

Boost, Fuel Pressure and Air to Fuel Ratio are all important gauges to have.

There are aeroforce gauges that can show you two values at a time, and loop through 8 (I believe 4 screens, so 8 values total). You can tell it to show you 8 different things on 1 gauge. They've also got a dual gauge so you can see 4 values at once (that's what I'm getting installed). You will need the corresponding sensors for it to work but it's all on their website.

My old gauges that are being removed were for Boost and Fuel Pressure.

 

not required

 

It's not needed, but it is good to be able to see where your car tops out at. If things change after time you will be able to see it. I definitely would use a fuel pressure gauge though. If that gauge drops below 59psi, then you know there is something wrong and not to get into boost until you fix it.

 

59 psi ? maybe more like 5-9 psi................fixed

 

He's talking fuel pressure so yes to 59psi................fixed

The gauges aren't nessisary but they can be useful for diagnostic purposes. A slipping belt or boost leak will show up on the boost gauge. Bad gas will show up in the AFR gauge reading lean (12+ at WOT). A bad fuel pump/ boost a pump or problems in your fuel pressure regulator (if you have an upgraded fuel system) will show up in your fuel psi gauge.

Im using glow shift gauges with good luck

 

I really think you should have a boost gauge. My max boost is at 6 psi and found out that I had a belt problem when the boost would not go above 4 psi. I also recommend that you get a gauge with a memory so you can check on your hi and low boost. This was how I found out that my car at the time would not go above 4 psi. It is hard to watch the boost gauge and the road at the same time. Just my opinion.

 

My car has a Vortech T-trim A&A kit with the stock pulley size. Coming up on three years on the car. The car makes 522rwhp on a safe tune. A gauge isnt needed for base kits. If you start pulleying down and cranking up the boost, then yes.

 

It's hard to watch both a gauge and the road at the same time. I nearly got crucified in another thread for speaking such heresy!

 

Really? 59psi? I think that is being a little conservative, when I'm really into the boost a get a little drop. There is a thread about it around here somewhere

 

It depends on the fuel system. I have an external regulator so it adds a psi of fuel for every psi of boost to balance the resistance from the extra pressure in the cylinder.

 

True many owners don't get one but they certainly can come in handy! For me personally, I do have one and wouldn't have a blower without one.

 

My stock 07 (non Z06 pump), with a BAP never drops below the factory set 59psi. I would start to worry about going lean if I saw the pressure drop below 59psi while in boost. When the pressure drops, the fuel volume drops off which could cause the car to go lean in a hurry.

 

Not looking to argue here but here's what I'm trying to explain: Your driving down the street cruising; air pressure in the intake is 0, fuel pressure in your fuel line is 59 so pressure of fuel squirting into your cylinders is (59-0) or 59 psi. Now you floor it, air pressure in the intake reaches 9psi. Your fuel pressure gauge reads 59 because its looking at pressure in the fuel rail, however the pressure of fuel squirting into the cylinder is 59-9 or 50psi. As the boost pressure increases so does the resistance for fuel to leave the injector. The fuel psi gauge reads 59 but that's only pressure in your fuel rail before the gas is resisted by pressurized air in the cylinder.

This is why a 600rwhp FI car needs more fuel than a 600rwhp NA or spray car; your fuel system has to fight the boost pressure as well as accommodate the addition power

The only true way to maintain stock psi across the fuel injector and ensure adequate fuel is to have a boost referenced regulator. My fuel pressure jumps to 70 at wot, this is in the fuel line. The gas leaves the injector and fights the 10psi from my blower and is effectively 60psi or stock pressure.

Im not sure how the BAPs work but I think they are boost referenced as well and act like the above mentioned regulator.

 

Thanks guys for the info I learned something with all of the replies i received. I decided that I will not get the gauges for now, once Im able to frequent the strip more often, and add a few more mods and i will revisit the gauges at that time. Thx again this helps alot

 

Good call, just drive and enjoy. To be honest by the time you see something wrong on the gauges its too late. Just every so often chech for belt just on your bracket, and make sure your BAP is at 100 and that none of the wires melted or got frayed. Enjoy your monster!