Hello all, so I recently stuck 80k and thought it a good idea to change my supercharger oil. I replaced the inlet gasket and water pump gasket as well. I assembled everything right on time for my ddm intake to arrive. Oh the excitement. I installed everything and cranked the car. Then the questions begin. Some struggle at start up it sounded like. Unsure as to why. So as I drove around, I feel like it's different. I used to experience kinda like a supercharger lag before hitting boost, and I don't quite feel that anymore. And almost a strange feel that it's not really accelerating properly. My boost gauge also stopped working which confuses me because everything is still connected and the vacuum line is okay. Sorry for the long talk, but just figured I'd describe what I've noticed. Feel free to ask anymore questions as I'm sure there's some I'm missing. Thank you everyone!

 

Any check engine lights? I'd probably double check all the supercharger stuff--intercooler boots & clamps, vacuum lines, supercharger tubes, etc first. Or maybe some sensor somewhere isn't plugged in? Not too sure about this one, I'd just go back and do a quick sanity check on every component related to the charger.

 

Moving you to the Stock Problems/Issues area.

Agree you should recheck all of your rubber clamp connections. Did you put new gaskets at both ends of the black plastic inlet duct below the BPV?

 

Thanks for the replies. No cel's yet. I only replaced the green inlet gasket and water pump gasket as I was unaware of the bpv gaskets. Although I do have a Detroit tuned bpv I was gonna put in this weekend. I'll double check my connections again since these are in close proximity. Although I think I remember a possible fault in one of the red clips on my inlet. It didn't really seem like it locked the right hand line in place, but it also didn't remove. Perhaps that could be a reason?

 

Yes, check those clips. They look like this when planted.

https://www.northamericanmotoring.co...ose-clips.html

 

Cool. I found the link for a replacement. However, why would that cause my feeling low on power? Just trying to make sure I understand it all, considering it's a brake booster. Although seeing as how it could cause a leak in the inlet tube, I could understand that as well. As another few bits of info, I am in Texas in rather warm weather, so that maybe could be a condition. And also when I changed my oil in the bolt from the snout, when I emptied the old oil maybe half an ounce came out. Very low amount. I added the proper amount back to it, but I wonder if my supercharger may have received damage.... Perhaps I'm worrying too much. Sorry guys!

 

So... I managed to replace the map sensor tube as well as the clip. Everything seems connected correctly and there's this little high pitched noise when I hit boost now. Not a supercharger whine, but something else. And I still have what seems to be a horrible dip in power. Once it hits 2500 until about 3500 rpm it just bogs really bad, like it doesn't understand how to handle the boost anymore and then it kinda proceeds to accelerate but still not as well as it used to. I've had no lights come up and I still don't know what could cause these issues now. I've got a ddm intake in place, a Detroit tuned bpv, a 17% pulley and exhaust. Everything except the pulley were recent additions, but would those cause these issues without a tune? Like the ecu just can't adapt anymore?

 

In case anyone still follows I managed to pull a code for p1689. Throttle body relation, but I have no lights and reset it once. It came back though I've read that using a bavaric system clears it for good. Any speculation in this? Anyways, if anyone has any opinions towards the situation they're welcome. I'm unsure of the threshold you'd need a tune for the car but once it's within reach I'll probably get one done. Thanks for reading!