^^^This is what causes 99% percent of Stage 1 problems, ****ty crimp connections.

I had my stage kit for a year and never had no problems, but when I did my turbo swap I went ahead and soldered the MAP sensors while it was apart.

 

I just got a call from my dealer and they told me they couldn't get it to boost to above 20psi without going 100mph and asked where I got the stage 1 kit done at... Such BS.

 

Love my stage 1. Dealer did a great job(no but connectors).

 

Another post to balance out ownership experience with the GM Turbo Upgrade Kit:

Status:
I'm at about 20k miles and 2 years since the installation of the kit and the car has always ran and still runs flawlessly.

Proper Installation Procedure:
The installing dealership was one of the few with experience with the kit at the time of installation (far and wide at that time) and had the proper GM tooling to do the job (proper die size, torch, etc).

Technical Competency:
Once I found a competent dealership service dept, I interviewed them, checked to see that they actually had the tooling and watched the installation, all of which they were ok with.

Maintenance:
During oil changes, I visually check the connectorization as well as the clearance of the TMAP sensor wiring connector from the A/C compressor and have found them intact to date.

 

This is pretty much the keys to a happy life with the upgrade.

The whole difference for most is a good tech who intalls the kit with the proper tools. These things just don't go on with just any old crimper.

The clearance issues is somewhat rare but can happen. You can not see by looking at it on a rack but the conditions it creates are now known so it is easy to correct with a dealer that knows what they are doing.

The biggest issue is often many who had a bad install keep going back to the same dealer and often the same tech keeps screwing with the problems as they have to fix their own comebacks. I feel often many have no clue what they did wrong and this is why some never seem to get fixed.

While solder is not the right way to fix this it may be the only way some techs can get it connected with no issues since they can not use the connectors properly.

The bottom line is there is nothing wrong with the connectors as they have used them for years on many parts of the car. There are also many SS that have them for 2 years and never had an issues. It all comes down to the guy who installs them.

The scary part is these are the same parts they use to install air bags. Imagine with the same tech how many of these he may have screwed up.

 

I really think you are the exception not the rule.

Mine were soldiered but still won't act right.

 

Mine is going to the shop in a few days for intermittent power loss after the Stage 1 kit.

 

Welcome to owning a GM raped by GM

 

Sad to hear about the issues. Also sad to hear they have not been resolved. Lotsa issues related to poor installation and improper diagnosis after the fact. Our vehicle is in the not had a issue category.

 

I had the same symptoms happen to my car and mine was a bad wastegate actuator assembly. They replaced mine and car has been running fine. When I first got my car it already had the stage kit on it and it would boost a consistent 23#'s of boost, then I noticed it going to 25-26 and that's when I started getting the 'overboost' CEL and car would go into limp mode. Now the car is back to 23#'s and is running fine.