Boost leash issues
Thread Starter
Teching In
Joined: Mar 2017
Posts: 4
Likes: 0
Boost leash issues So I was dyno tuning my turbo truck yesterday and I was having issues with my boost leash I could not get sorted out. The truck makes around 9 psi on the wastegate spring...if I setup the boost leash for time 0.0, rate 01, psi 2 I should see around 11psi of boost.. am I correct on this? Anyways I did that thinking that was what was going to happen and I saw 20 psi of boost at 5000rpm and let off quickly it seemed that it was going to climb to the sky. So I tried it again with co2 gate pressure at 1 watching more carefully and same thing happened...let off at 16psi and it was climbing rapidly. Any idea on what is going on here? I have my co2 reg set around 15-20 psi (not sure how accurate that is due to a 200psi gauge on the low side). Any input would be appreciated
Launching!
Joined: Jan 2018
Posts: 283
Likes: 0
what does the controller record in gate pressure during the pull?
Thread Starter
Teching In
Joined: Mar 2017
Posts: 4
Likes: 0
Yes the solenoid is vented to atmosphere and on the log it actually shows 2 psi gate pressure as the boost is climbing then when you let off it drops to zero.. I have done some more reading and it seems most people run 50-80psi on the regulator wonder if mine was just set too low? Strange
Registered User
Joined: Oct 2025
Posts: 2
Likes: 0
Yes the solenoid is vented to atmosphere and on the log it actually shows 2 psi gate pressure as the boost is climbing then when you let off it drops to zero.. I have done some more reading and it seems most people run 50-80psi on the regulator wonder if mine was just set too low? Strange
I know this is from 7 years ago, I doubt anyone will see this but what are the chances that anyone has come across this? Or any chance the author got this figured out? I’m having the same issues
