Alright guys...in a previous post I have learned that when I was N/A my car should have read 0 when you hammer it. Right? Mine only went to -10hg. I checked for leaks. NONE.
Now that I'm boosting I have my wastegate acutaor set at 4lbs. When I Say this I mean my boost gauge goes up to +4 before it stops. Does this mean that my gauge is lieing to me?

If I hammer it now. It goes to -10 right away.(just like when I was N/A). Then Builds from -10 to +4 on the gauge pretty quickly. Does not go over +4 but could this mean I am boostin way more than 4lbs?

Could I have a bad gauge? I have it tapped on its own spot on the intake pletntum. On the 3 prong T of course.

Here is my car at idle all warmed up and such .....some times it is at about -18/19.

Kevin
The old:


The new:

if you are at WOT and are NA your gauge should read 0 psi. if not and there are no air leaks then you have a bad gauge.
Re-read your post.... you have your westgate set at 4psi? if it is an open air westgate, then when you hear it open you will know you have reached whatever ammount of boost it is set up at.

-97 GS (First project, 299 whp)(sold)
- 97 RS 2.6 last numbers: 306hp, 352tq @16psi (Dead, parted out)
- 99 GS OZ, Hahn Kit, 56k miles (Sold)
--------
- 00 Nissan Maxima GLE (Daily Driver)
- 02 Audi A4 1.8T Quattro

My wastegate is internal...so I can't hear it when it opens. Im am betting I have a bad boost gauge. Im gonna get vacume tester and check it, to what my gauge says...I bet it tells me different.

Kevin
The old:


The new:

Well, That could be the cause for you blowing earlier
Nick
97RS

Nick
97RS

What exhaust do you have? Stock GST exhaust wont let you push more than about 5psi with an smic, 4psi with fmic.

>What exhaust do you have? Stock GST exhaust wont let you
>push more than about 5psi with an smic, 4psi with fmic.

Stock GST's hold a hell of a lot more than 5psi stock. I doubt the exhaust will cause any problems at such a low boost. Sounds like gauge but what does it read when you turn car off? Should be 0.

Robert Parkhurst
toykilla@comcast.net

Ok here is the verdict..
boost gauge is way off...that is probly why my car blew engine #2. (I am still blaming engine #1 on 100k of hard driving ).
Anyway I bought the vacum tester and it shows me @ -15 idle rock solid where my boost gauge shows me @ -20. hmmm 5lb difference..makes me suspicious.
I also found that the vacum tester goes to 0 when i shut the car off...my boost gauge only goes to -10.

About the exhaust....I have custom 2.75 inch with a 2.75 inch resonator that is 24 in long, and a gutted cat with a tenzo venturi end. I had this all made for me YEARS ago by tenzo racing sports.

Kevin
The old:


The new:

well took me like 10 min but i took apart my damn boost gauge and fixed it!

now it read the same as my vacum tester lol...well close. by like 1lb.
I am still going to buy a new one though.

Kevin
The old:


The new:

>Stock GST's hold a hell of a lot more than 5psi stock.

Well, obviously since the GS-T runs like 12psi. However, even with my boost controller all the way open, I couldn't get over 5psi. When I put on a test pipe I could hit 9psi+. Maybe I had a clogged cat or something? But HRC's website does say "Aftermarket Exhaust STRONGLY recommended for stage 2" in several places.

>
>Well, obviously since the GS-T runs like 12psi. However,
>even with my boost controller all the way open, I couldn't
>get over 5psi. When I put on a test pipe I could hit 9psi+.
> Maybe I had a clogged cat or something? But HRC's website
>does say "Aftermarket Exhaust STRONGLY recommended for stage
>2" in several places.

HRC's site also says the stock injectors for our car are rated at 175cc's I think. Something close to that when we know they are rated at 235cc. Aftermarket exhaust will help, YES, but prevent you from going over 5psi. NO.

Robert Parkhurst
toykilla@comcast.net

So there's a good chance that you were boosting 14 psi. Yup, that's a motor popper when you think that you are running 4...
-=B-=

Dude, Boeing called. They want their wing back.

Dark0ne95: There is a butthole on that girl that his going to feel the wrath of 23 yeras of worldwide hate.
Me: Can I put that in my sig?
Dark0ne95: GO right fucking ahead.

Probly more like 9lbs non intercooled.

Kevin
The old:


The new: