chris101910

I am a (proud) new owner of a stock 88 TII and I was wondering what kind of boost I should be seeing in different gears? If the car is standing still and I rev it up, I don't see any boost. I see very little in 1st. From 2nd on the boost kicks in real nice. Does this sound right?

Thanks!!!

Aaron Cake

iTrader: (1)

Stock boost is about 5.5 PSI. You likely won't see much boost in 1st gear with the stock intake and exhaust.

chris101910

Okay. Thanks!

stylEmon

iTrader: (2)

I just installed a Boost gauge and have been looking for a thread like this.

what about with a wider TID, FCD and no CATs?
At what point should the gauge read 0+ psi?

I am asking because I can hear my turbo, but the gauge still states 10 hhg(or whatever) of vac. Max boost is around 6-7psi.

There are a couple areas that my boost gauge hose might be pinched, but I need to know what to expect to get it right.

Aaron Cake

iTrader: (1)

In general you'll have issues making large amounts of boost in 1st gear. The load on the engine just isn't enough and you don't stay in 1st long enough.

stylEmon

iTrader: (2)

I understand 1st gear, but my main question is:

At what point should my gauge read a positive psi?
and
what is the max boost I can expect with mods like mine?

"...wider TID, FCD and no CATs?"

Rotary_Rocket_87

If 5.5 psi is normal for a stock TII, than why am I pushing 8 pounds with only an exhaust? Yeah, I understand that an aftermarket exhaust allows for better flow, but that is a dramatic difference.

stylEmon

iTrader: (2)

DO you have CATs? Without cats your exhaust is wide open, allowing MUCH better flow.

peachykeenwight

What is "an exhaust?"

A full exhaust with no cats (downpipe->midpipe->catback type situation) should yield 2-4 more PSI on the stock turbo.

EDIT: clarify that for me if you could, Aaron.

crassfc3s

im running 10 on a gutted stock exhuast and intake, o_O weeee i see about 6-7 in first and 10 in all other gears in neutral i can get 4-5 psi revving to 6kish.... my car has other mods too though lol.

stylEmon

iTrader: (2)

I expect to see close to 10psi with my mods, but the gauge only reads about 6 or 7. I think I need to check my hose for pinches.

BTW CrassFC4s, hows things in SA town? I moved from there to AZ about 4yrs ago.

Rotary_Rocket_87

Sorry, I didn't specify on my exhaust. I don't know what kind of down pipe i have but I am running one cat with a Pacesetter cat back single to dual outlet.