turning up the boost q

[motozachl]

i am currently running 18psi. if i turn it up to 20 would i see much of a difference as in added hp, 1/4 time, mileage, risk of hurting my engine?

 

[fox4]

You should definitely see an increase, just make sure you have some way of monitoring your fuel trims, to make sure your timing isn't being retarded too much (knock). Hitting 20 psi with a 16g is getting closer to its efficiency range which should definitely give you some more power.

 

[JayRolla]

How does monitoring your fuel trims make sure you dont have timing pull?

Anyways if you have a logger watch your timing and make sure you dont have timing pull. You can make 5-15whp for every psi you add depending on the turbo and setup so you should see an increase.

 

[my1997gsx]

You should be able to see a difference at the track and on the dyno on 20psi.
I’m not sure if a 16g has a better efficiency at lower elevation I used to run 20psi and notest it will start to die of to about 18psi in the higher RPM range.
I’m also at 5'800 feet so my turbo has a hard time breathing no mater what so now I run 25psi

 

[fox4]

How does monitoring your fuel trims make sure you dont have timing pull?

Well you can watch the fuel trim and if the ecu is wanting to add a lot of fuel then you are more than likely getting a decent amount of knock. But what I actually meant was a way to monitor fuel trims and monitor timing. My bad.