Digital boost gauge

[chet1185]

Just installed a boost gauge for my first time. It came with the car, looks cheap. At idle its at -5 and it goes up to 21 at full throttle. It is a stock t25 with the BC restrictor removed. Does this sound right?

Also the line I T'd into goes from the FPR to the intake. It is a 6 bolt and there's no line going from the fuel solenoid to the fpr.

 

[thomcasey]

Everything stock and properly connected (no boost/vacuum leaks) you should see -20 to -24hg at idle and about 12-14 @ WOT. So it is either wrong, or you have a hone in the line feeding the wastegate. This will cause the boost to spike and bad vacuum numbers

 

[VtecvrsTurbo]

If you were hitting 21 PSI on the stock fuel, you should be hitting fuel cut. I think your gauge is junk.

 

[chet1185]

It looks like a cheap piece of sh*t,

Not sure if its t'd in at a good spot either. And there is no vacuum nipple at the P on the TB.

 

[crimsondragon]

FPR is one of the most common, easiest, and most reliable source for a boost gauge. How's your idle? If you're idling under 1k RPMs I would hurl it. Even with aftermarket cams, there's no way you're idling at 5 inHg unless you have a serious leak.

 

[chet1185]

Throttle body shaft seals Are leaking.

My fpr isn't ran off the solenoid. It goes directly to the intake. Is that still good for the boost gauge?

 

[Phantom DSM]

Is the P port on the throttle body just open ? Plug it up or use it for a boost gauge source and just leave fpr straight to intake manifold if you want, ive done that. Check for for other boost leaks and if you are still at -5 at idle, it is probably junk like the guys are saying .

 

[chet1185]

The vacuum nipple from P is no longer there. I guess ill wait and see after i rebuild the TB. I have glowshift gauges in my TA, so ill probably get one of their boost gauges.