Compression Ignition Addict
Join Date: Aug 2008
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Installed boost gauge - disconnected red line - when does the defueling happen?
Hi all -
I installed a boost gauge today. I installed it in the intake manifold and it works great. Steady needle, etc. I accidentally kinked the line pushing it through the firewall so I had to patch it with vac hose, but other than that it was an easy install. I placed the gauge in the bottom left corner of the dash, under the windshield. I used a 2 1/16" gauge, a basic VDO 90 degree bracket and... you will never believe this... a blackstone oil sample mailer (black cylinder) as a gauge pod. It looks great, I cut the threads off it, and a hole in the bottom for the line and the wires, it looks like it was made for it. Thanks blackstone!!
With Superchips mileage tune, red line connected, I would get 20-21 psi max. With Superchips performance tune, red line connected, I get 22-23 psi. With the red line disconnected, I saw 25-26 and backed off each time. I read alot about it 'defueling' when you get over 24 psi, but will this still be if I have a Superchips tune running? Should I worry about leaving it unplugged? I like how much cleaner WOT is with the perf tune with the line disconnected. If it did defuel, would it just defuel for the time then keep fueling or does it cause some drama? Do you have to pull over and turn off the truck or anything? One post said something about 'limp home mode' and I was not so excited about that.
So what do you say? I know there is a lot of info out there but none of it really agrees.
2000 XLT F-250 7.3 Crew Cab Auto w/Transgo shift kit
4" MBRP turbo back exhaust w/muffler
PHP TS chip - 65 tow/80DD/120 race
Caterpillar ELC coolant
Broken-into door lock mod
285/75/16 Hankook ATM's
2" Rough Country add a leafs all around
In the Driveway:
2000 VW TDI Beetle
, chipped! (For the wife)
1995 Ford Mustang 3.8 (SOLD!
2012 Dodge CCSB 2500 w/Hemi