boost gauge/pyrometer question

[Masakari]

i havent had time to track down how everything is hooked up on my car, but im a little concerned about my boost gauge and my pyrometer..when i am just cruising at about 70 my boost gauge is reading a vacuum of 10-15 psi..and when i hammer it jumps to around a positive 11...did he have this thing hooked up to the wrong lines or something?

and my pyrometer is reading anywhere from 12-15...now on a turbo diesel truck at 15 the turbo would become a molten pile of slag...do gasoline turbos run hotter/withstand more heat then diesels?

 

[Boostmonkey]

For my information;

Pyrometer? like.. an engine temp gauge or egt gauge? please enlighten me

 

[Masakari]

the pyrometer tells you the heat of the charge going through the turbo...so when mine is running at 12-15 it means that the heat of the exhaust is 1200-1500 degrees....if i am looking at it correctly the pyrometer on mine is installed before the turbo

 

[RoasT BeeF]

Your boost guage is hooked up fine. When you are crusing at 70mph the turbo is not spooling so its going to stay on the vac side. Vaccum is measured by In. Hg. Boost is PSI. Your EGT temps do seem a little high. What all is done to the car?

 

[Masakari]

Engine-
BJ's Cylinder head stage 3 head with plished and swirled over sized valves, 3 angle valve job, port and polish intake side to match the 1g intake, crower titanium valve spring retainers, 3g lifters, new valve guides, and crower valve springs
HKS 272 intake and exhaust cams
Fidonza Cam gears
Metal head gasket
1g throttle body
extruded and honed 1g intake manifold
650cc Denso injectors
Apexi front mount intercooler
Shep racing Transmission
Fidonza Alum. Fly wheel (with act street disc clutch, stock pressure plate)
Billet shift forks
4 spider center dif.
torrington bearing, with galant vr4 first gear
ss break lines(not installed)
ss clutch line(not installed)
Goodyear gatorback belts
Brembo cross drilled and slotted rotors(Back only)
1g fuel rail
new 3g lifters
Dejon Tools upper intercooler pipe
HKS SSQ BOV
Injen Intake Pipe
K&N FIPK
RRE DownPipe, long, 3"(No Cat)
Apex-I N-1 3" exhaust
Evo 3 Exhaust Manifold
Evo 3 O2 Housing
Turbocharges.com T-28 Eliminator with Big 16G cartridge and TD05 Exhaust housing (around 10k miles on turbo)
Walboro 255 Intank Fuel pump
Hallman Manual Boost Controller


those are all the engine/tranny mods...i need to find a good tunning shop around here to get it all checked out...im scared to mess with anything

 

[RoasT BeeF]

Whoa. Well I would suggest at the least richening things up a bit as you are more than likely running lean with that high of EGT temps. What are you using to tune?

 

[kraka]

Whoa...you have 650's, a 255lph, a t28, a FMIC, and 272's and you still don't have a tuning device...you better get that thing tuned right away unless you like your car running sh*tty...or just not running at all...but otherwise I think your guages are fine, you just don't know how to interperet them...I recommend you talk to the previous owner about how the car is normally running so there is no futher confusion...

 

[Masakari]

I have owned this car a total of 3 days..and tonight is the first night that it has been in my garage...i was supposed to have a pocket logger included with it, but if its here i sure as hell cant find it...i have an SAFC ( which i know nothing about) but i cant really do anything without the pocket logger, i am calling the guy i bough it off of in the morning to see what the deal is....i know its running lean, because the guy who had it lived in colorado..and if he had it tuned for that altitude that means its wway to lean for running around here

 

[Spoolin98]

read up on that SAFC, you can tune your car with that