Thread: Boost

Well if you don't have supporting mods for that smaller pulley then get rid of it or get a bunch of exhaust mods or your car = a ticking time bomb. What size pulley is it? You can go out and measure it too if it isn't written on there. Stock is about 5-7 psi IIRC and a basic 3.4" pushes 10psi.

Originally Posted by bluegtp91

Well if you don't have supporting mods for that smaller pulley then get rid of it or get a bunch of exhaust mods or your car = a ticking time bomb. What size pulley is it? You can go out and measure it too if it isn't written on there. Stock is about 5-7 psi IIRC and a basic 3.4" pushes 10psi.

My stock pulley sees anywhere from 7-9 psi stock according to my aeroforce gauge at max rpm's on the standard 3.8 pulley......but psi is over rated as it is just a way to gauge how much restriction(backpressure) is in the system.......if you had a huge intake and headers on, it would not make close to that much boost, but still make as much or more power.........obviously I need to upgrade my exhaust.......

wow i learned something today i didnt think 3.4 was around 10 psi well glad i learned something

Originally Posted by GTPJOE90

wow i learned something today i didnt think 3.4 was around 10 psi well glad i learned something

What did you think it was then? Stock is 8 at the highest.

my 3.4 setup runs about 9 psi peak, but ive got some mad flow mods.

wow i was told stock is 5 and 3.4 is max 8

Originally Posted by GTPJOE90

wow i was told stock is 5 and 3.4 is max 8

no way........whoever told you that is smoking something...

I get about 9-10 with my 3.4

Heh...buddy of mine saw 15 psi with his 3.4" and no knock...go figure. LOL Car is a freak.

I saw 17 on my 3.1" on a VERY cold day...about 2* outside. And I had no knock either so who knows...get a boost gauge. That'll tell you.

i was seeing 14+ psi in the winter last year on my 3.4.

Just looked at my aeroforce 9.3 max at 80 degrees outside.

boost will never be a set amount for each pulley. period.

curious: how much does the stock Series III make?

Originally Posted by Orbital431

curious: how much does the stock Series III make?

same.

Originally Posted by bluegtp91

same.

Boo! :'(

Originally Posted by Orbital431

Boo! :'(

But you have a GenV vs. a GenIII so you go faster...why you cryin?

i assumed the L32 made at least like a couple lbs more than L67. lol.

Originally Posted by Orbital431

i assumed the L32 made at least like a couple lbs more than L67. lol.

more boost does not equal more power in all cases, it just means that it has more restrictions equalling more backpressure.........you just have a more efficient setup.......