Cobalts SS banner

1 - 9 of 9 Posts

·
Registered
Joined
·
28 Posts
Discussion Starter #1
I was just curious house much boost people were getting in first gear since mine seems to only go up to 5PSI in 1st but I'm getting up to 12 in other gears.
 

·
Registered
Joined
·
729 Posts
Chizzap30 said:
I was just curious house much boost people were getting in first gear since mine seems to only go up to 5PSI in 1st but I'm getting up to 12 in other gears.
Boost is applied resistance or load. you get into a higher gear there is more load and then more psi is built up towards max pressure. It is possible to have less load in 1st than in 2nd and so on therefore less PSI. however 5 psi sounds low. I will test my car to see. 1st gear is so short that I dont usually look.
 

·
Site Moderator
Joined
·
3,724 Posts
Boost is applied resistance or load. you get into a higher gear there is more load and then more psi is built up towards max pressure. It is possible to have less load in 1st than in 2nd and so on therefore less PSI. however 5 psi sounds low. I will test my car to see. 1st gear is so short that I dont usually look.
This is very true. Though you might not get the full 12 psi in first (and I'm assuming you've got the stock pulley), you should definitely get more than 5. 10 psi sounds about right.
 

·
Registered
Joined
·
415 Posts
ssnipes said:
Boost is applied resistance or load. you get into a higher gear there is more load and then more psi is built up towards max pressure. It is possible to have less load in 1st than in 2nd and so on therefore less PSI. however 5 psi sounds low. I will test my car to see. 1st gear is so short that I dont usually look.
Very true, if you dont hook up through the whole gear your not going to see full boost. I didnt have a boost gauge until after I swapped the pulley so I dont know what the stock pulley would hit.
 

·
Registered
Joined
·
49 Posts
I thought I had read that the ECM limits boost in 1st gear. I am pretty sure I hit 12 in first still, but it doesnt come on as soon as it does in other gears.
 

·
Registered
Joined
·
28 Posts
Discussion Starter #9
well, I have to take my car up to the dealer for the Driver's Side door (see other post). So while I'm up there, I'll ask them about the boost.
 
1 - 9 of 9 Posts
Top