How much Vacuum at idle

[purdueranger]

I was wondering how much vacuum you guys with turbo Cobra owners have at idle. I have a Speedhut boost/vacuum gauge and a Blitz SBC that displays boost and vacuum as well.

My Blitz controller displays 19 in of Hg and my Speedhut gauge displays 21 in of Hg.

I just installed the Speedhut gauge so that is why I was wondering.

 

[blowngt]

19# at idle here.

I also have a Blitz. How do you like yours so far??

 

[yellow03vert]

Mine is around 19-20 at idle, I have a blitz controller as well.

 

[boosted2000si]

I usually have between 18-22 at idle with my eboost2 controller.

Depends on weather, heat, and what accessories I have on.

 

[RAZRS EDGE]

All depends on the cam profile. Are you on stock cams?

 

[venom1997]

All depends on the cam profile. Are you on stock cams?

and alttitude the higher you go the less hg at idle

 

[purdueranger]

I love the blitz controller. I am on stock cams.

 

[blowngt]

I love the blitz controller. I am on stock cams.

Stock cams you should see 19"-20" of vacume.

Just out of curiosity, where do you have yours mounted?

Also, do you happen to know if you can tap into the controller and use it as a MAP sensor to log boost (like with the SCT program)?

I've been lazy about installing a MAP sensor and tapping into the boost controller would be the easiest way (assuming you can).

 

[TRBO VNM]

anywhere from 18-21 and you are fine. the differences between the 2 can be different locations you are getting the readings, calibrations, etc.

 

[purdueranger]

I took the line off the stock boost gauge and plugged it into the speedhut gauge. I will have to look into hooking the boost controller up to the SCT to log boost.

Jason,

Do you know how to "calibrate" the speedhut boost gauge?

 

[TRBO VNM]

the speedhut gauge should be calibrated, however, if the needle is not sitting at 0 with the car off, then it does need to be re-calibrated. I don't recall the exact process. I usually figure it out with the gauge in front of me. if you give speedhut a call, they should be able to step you through it. It is similar to setting the high/low limits, so by doing something wrong you can be setting those instead. And the high/low limit directions are usually on the install directions they provide.

 

[purdueranger]

the speedhut gauge should be calibrated, however, if the needle is not sitting at 0 with the car off, then it does need to be re-calibrated. I don't recall the exact process. I usually figure it out with the gauge in front of me. if you give speedhut a call, they should be able to step you through it. It is similar to setting the high/low limits, so by doing something wrong you can be setting those instead. And the high/low limit directions are usually on the install directions they provide.

The gauge isn't letting me set the high and low limits. I am going to call them tomorrow and see if they can walk me through it or just send me some directions.

 

[TRBO VNM]

I assume you have the revolution series. I need to have them email me directions so I always have them available

 

[purdueranger]

I assume you have the revolution series. I need to have them email me directions so I always have them available

Yep, The one that I had you place an order for me.

 

[TRBO VNM]

thats what I thought. most go with the revolution.

 

[purdueranger]

http://www.svtperformance.com/forums/terminator-talk-229/696166-how-calibrate-your-speedhut-boost-gauge.html