Question: Drive Pressure Gauge

03-GMC

03-GMC

Let there be light!!
Mar 26, 2009
485
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SLC, Utah
Ok I am going to be doing a DP gauge here soon. After reading some threads I came to the conclusion I bought the wrong kind of gauge. Lots of people saying to use a electronic gauge and I bought a mechanical gauge. Think I should try and sell it and get the right kind that works the best? Also I has some questions on how to adapt the copper cord to the nylon cord is there some sort of special adapter? If I end up keeping my gauge is there a way to prolong the life on the gauge from fluttering?


Thanks

Derek
 
sweetdiesel

sweetdiesel

That's better
Aug 6, 2006
10,390
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Thailand
Since u have a lb7 I wouldn't worry about a electric gauge

what can you do to change dp besides turbos?


Vvt turbos are where it is most important and after seeing the dp after max effort tuning they still suck.

Search ghetto drive press gauge and u will see all that u need:D
 
hondarider552

hondarider552

Getting faster
May 28, 2008
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I just used a plain 50psi mechanical guage, ran the copper tubing coiled to plasttic boost line into the guage, worked prettty good for what I needed it for. :)
 
03-GMC

03-GMC

Let there be light!!
Mar 26, 2009
485
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SLC, Utah
I dont think 50 PSI gauge would be enough. I went with a 100 PSI.... All my gauges are on the big side though just incase.
 
BlkMax

BlkMax

Member
Sep 1, 2008
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Wasilla, AK
I used an electric transmitter so I could see it on the gauge and also log it with EFI through the analog inputs.

I do not know about stock turbos, but with my HTT, I have seen 65 psi of DP at 40 psi plus or minus of boost.
 
LarryJewell

LarryJewell

Back with his honey :)
Jan 21, 2007
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San Angelo
duramaximizer said:
Is 50 PSI enough for a drive pressure guage?
Click to expand...

No, you should use a 100 psi, trust me, you'll need it

03-GMC said:
I dont think 50 PSI gauge would be enough. I went with a 100 PSI.... All my gauges are on the big side though just incase.
Click to expand...

:thumb:

duramax hd said:
A boost gauge is what everyone uses correct?
Click to expand...

No, a 100psi full sweep electric fuel pressure gauge

Redbowties88 said:
yep.....
Click to expand...

Nope, see above post :D
 
hondarider552

hondarider552

Getting faster
May 28, 2008
10,627
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Arizona
BlkMax said:
I used an electric transmitter so I could see it on the gauge and also log it with EFI through the analog inputs.

I do not know about stock turbos, but with my HTT, I have seen 65 psi of DP at 40 psi plus or minus of boost.
Click to expand...

Really? Highest mine has been on my HTT is 50psi DP for 42psi of boost..

then again my housig is a 13cm.
 
Subman

Subman

Old Geezer
Jun 27, 2008
3,233
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Madras, OR, Pahrump NV
Boost gauge works just fine, be sure to use enough copper tube to dissipate the heat. I've never had one flutter or plug up. Ideally you want your boost and drive pressure to be about the same, in the perfect world you boost exceeds the drive pressure, that is tough to accomplish.
 
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