Turbo 5.3 Boost Falling Off
Thread Starter
Teching In
Joined: Dec 2022
Posts: 42
Likes: 2
TECH Fanatic
Joined: Oct 2022
Posts: 1,802
Likes: 641
From: Louisiana
yeh id get all the lines ran right and most real tuners will work with you on charging springs in the wastegate when tuning your car so you can achieve the level your aiming for unless of course something comes up that may limit you.
Both cars have been run up around 14 lbs. on pump fuel only for years now.
Since he's remote, he uses scans from your drives to dial in the tune on the street, so you get a really nice driving car and he'll work with you until you're happy.
I have a 4 port solenoid, 6psi springs. I make 4psi on the gate and around 90% duty cycle I make 24-25psi. I think you need to get rid of the two solenoids and get a 3 port for low boost or a 4 port for a wider range. Be award that a 4 port has less resolution and small changes are recommended because you might overshoot your boost desired. You are over complicating things right now. You are definitely not blowing the spark out. Timing and AFR play a part in the boost you make too...a small amount... and affects the spool rate.
I have my solenoid hooked directly to the discharge on my turbo. I have a three port on there at the moment and it gets 10psi max (4 port was acting up, think it was the connector). heres how mine is hooked up as a 4 port or a three port:
Port "A" or "1" (depending on brand) Goes to the top of the wastegate (dome)
Port "B" or "2" goes to the bottom
Port "C" or "3" goes to the discharge on the turbo
If you have a 4 port, leave the 4th port open
If you have a 3 port... then your done. Start low on duty cycle so you get a feel for what its going to do.
heres a diagram for you.
https://www.turbosmart.com/wp-conten...tMuZ3XH2BCZvzW
I have my solenoid hooked directly to the discharge on my turbo. I have a three port on there at the moment and it gets 10psi max (4 port was acting up, think it was the connector). heres how mine is hooked up as a 4 port or a three port:
Port "A" or "1" (depending on brand) Goes to the top of the wastegate (dome)
Port "B" or "2" goes to the bottom
Port "C" or "3" goes to the discharge on the turbo
If you have a 4 port, leave the 4th port open
If you have a 3 port... then your done. Start low on duty cycle so you get a feel for what its going to do.
heres a diagram for you.
https://www.turbosmart.com/wp-conten...tMuZ3XH2BCZvzW
If you're using the compressor as the pressure source in your Holley boost controller you'll need to crank up the PID settings a bit to get things working faster. At least that's what I've found on my setup. I'm using a TNT 88mm T6 and my PID settings are 12, 35, 0 50 psi/sec target rate limiter
Thread Starter
Teching In
Joined: Dec 2022
Posts: 42
Likes: 2
Update: Shut the boost controller off and put a 9lb spring in and it made 7.4lbs and ran like a freight train. Still undecided if I just leave it with wastegate or run co2 since it's just a street at. Probably won't see the track until I get a beefier trans and rear end
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Verdad Gallardo Update: Shut the boost controller off and put a 9lb spring in and it made 7.4lbs and ran like a freight train. Still undecided if I just leave it with wastegate or run co2 since it's just a street at. Probably won't see the track until I get a beefier trans and rear end
Get the controller working as the boost will come on faster and steadier.
Plus, you could wick it up a little more on pump gas which you will want to do.