Boost Problems As Usual

[YoungTurbo]

I can't get the boost to turn up past 14 psi...I checked all the vacuum lines as well as intercooler hoses (all new)..It will jump to 14 and then bleed off to 12 or so...I have the wastegate rod turned down almost all of the way...I also tried doing it "tuner" style...I only got 10 psi at the most when I did that...U think the orifice in the "Y" connector could be the incorrect size? The downpipe puck seems to be sealing...can't see where it may or may not be seeping exhaust by...U think Joe Lubrant programs boost control in to his chips??? I'll list my important mods below to let u see:

TE-45A
Stock Intercooler (V4 on way..Stock not leaking..checked)
Joe Lubrant 93 chip
Terry Houston DP
Champion Aluminum Heads
MSD 50's

 

[Mr URL]

Chip burners assume you have the stock wastegate setup installed and program for that. Only one that I know of that doesn't is Steve with his MaxEffort chips. His requires a bleeder valve or seperate boost controller like the BSTC Boost Command.

Make sure the wastegate hoses are connected correctly. Wastegate solenoid wiring harness needs to be plugged in and working or else you will get low boost (stays closed so it can't bleed off air going to the wastegate actuator). Drivers side wastegate solenoid vent needs to be open and vented into the air. It may or may not have a little foam filter on it. Then a vacuum line will be connected to the passenger side port on the wastegate solenoid down to the "Y" connector. Straight leg of the "Y" with the restrictor (you can see a little brass insert with a small hole in it) goes to the compressor housing of the turbo with a vacuum line. Non-restricted leg of the "Y" goes to the wastegate actuator with a vacuum line.

There are some defective "Y"'s out there but problem with those was the holes where too small. Being too small it would create boost spikes cause it restricted too much air to the wastegate actuator. Buddy of mine had one on his car while at Bowling Green couple years ago.

You can try another wastegate solenoid but they rarely fail. Wastegate actuators can get weak over time.

You can try disconnecting the vacuum line from the wastegate solenoid and CAREFULLY....REPEAT CAREFULLY get your foot into it SLOWLY and see if the boost goes over 12 psi. If you floor it your boost level could hit the sky (30+ psi) causing engine damage. It's a good test though.

Should give you a start.

 

[YoungTurbo]

Thanks

Thanks for all the good info....I'm gonna look at all these things and hopefully one will pan out!! Thanks again