Thread: Max Boost With GEN 3 or GEN V

My s1x and gen 5 with a 3.4 makes a max boost of 13psi right before the shift point of about 6200rpm. Doesn't this seem kind of high? I know a 3.4 on a gen 5 is like a 3.2 on a gen 3 but 13psi still seems high to me.

understand that i have the rockers lol unless i can sell them and make it work getting a stock set i messed 2 stockers up which is really why i went to the roller

Saw 10 psi on my 3.6/gen 3. It was 20º outside.

Originally Posted by GTPpower

I'm running 13 psi on a 3.0 pulley on a 125 wet shot with stock headgaskets and stock bolts.

Keep it from detonating, and you won't have a problem. Detonation is the main reason headgaskets fail.

That and getting overzealous with ignition advance

Originally Posted by lilrocket

So what is the most boost you have seen you GEN 3 or GEN V make just show boot number with pulley combo currently with my 1.8 Rockers, spring, s2 ic, headers, etc. with my 2.8 im @ 13-14

Ever have this car on a dyno? Curious too about the ZZP PCM tune. With your setup should be 310-315whp at least.

To respond to your question I was at 14.4PSI on a 2.7 Gen V w/ 5% OD

Originally Posted by lilrocket

understand that i have the rockers lol unless i can sell them and make it work getting a stock set i messed 2 stockers up which is really why i went to the roller

I'll sell you a stock set cheap.

I saw 12.7 lbs yesterday. Sd headers, intake, shift kit, 3.5 pulley, tune.

Now that seems high to me

Converted from my map readings. I get 9.8 psi on a gen 3 with a 3.1 pulley. 9.2 w/ my 3.4. Putting a 2.7/gen V on in the spring, maybe ill finally get over 10psi