plumbum

I noticed last summer that it didn't seem I could control my boost with the Lindsey boost control. No matter where I turned the dial if I got on the gas it would always be the same thing. Is there a way to test them to see if they work?

Car is off the road on stands for the winter, trying to get all my little projects done before spring so I can drive it trouble free all summer

Bri Bro

The boost control is a pressure regulator. Test it by connecting it to compressed air and see if it regulates the output on a pressure gauge. Any hardware/lumber store has the gauge and fittings to make the connections.

rlm328

Make sure you do not have the lines to the waste gate backwards.

plumbum

How would I find out? It was already installed when I purchased the car

Bri Bro

How the boost controller is connect depends on the type of wastegate you have. When you know the type of wastegate, do a search and there were lots of posts with diagrams on how to hook them up. They are not all the same.
http://www.lindseyracing.com/LR/Parts/TECHMBC.html
https://rennlist.com/forums/1445922-post15.html

plumbum

Thanks for the links! I will have a look and do some reading. I dont know much about the Turbo system in these cars yet (I guess because it is working ok)

Black51

Then I bet what rlm328 said is your problem.

Ben951S

Just please use an aftermarket boost gauge, not the stock one.

plumbum

I am...that's why I think it may not be working

plumbum

got under the car today and confirmed I have a LR dual port wastgate..I checked the lines and confirmed they are connected corectly.

Thanks for the link to the LR diagram! It helped a lot

Next step will be to check the MBC

plumbum

I checked my MBC...well took it to a shop with a compressor and regulator which I dont have at home..I think it is pooched as it seems to stay around 15psi regardless of where the controller is turned. I noticed on the LR site there is a rebuild kit has anyone used this kit?

Debating on the kit or a new MBC but I would not need all the extra parts that come with it.

xsboost90

once you adjusted the MBC did you press it down and lock it?

plumbum

I did...just stuck around 15psi.

Black51

Do you have the controller routed into the cab?

plumbum

It is in the cab mounted below the radio