New wastegate spring too stiff (86 5kcstq)
#1
![Default](https://www.audiworld.com/forums/images/icons/icon1.gif)
I recently installed a qlcc chip and new wastegate spring in my 86 and on the test drive I found that I am running into the 1.95 bar boost limit of the chip. Is there any way to slightly reduce the spring pressure? I don't want to have to keep an eye on the gauge while I'm pushing it. Car ran fine/ developed normal boost before the mod. I made sure the spring was properly seated when installing. Wastegate cap is stock (not shimmed or otherwise adjusted). I did the chip and spring to my 200tq this spring and have had no problems.
Any one have a 1.8 bar spring they aren't using?
Any one have a 1.8 bar spring they aren't using?
#3
![Default](https://www.audiworld.com/forums/images/icons/icon1.gif)
Make sure you ck the line going to the wastegate for leaks. Not sure where you got the spring or the chip, but the original QLCC consensus was that a 1.8 bar spring is 1 black stripe on the top, 2.0 bar spring is 2 black stripes on the top and a 2.2bar spring is 3 stripes on the top.
HTH
Scott Justusson
HTH
Scott Justusson
#4
![Default](https://www.audiworld.com/forums/images/icons/icon1.gif)
Most of the hoses were replaced while I was waiting for parts last week, but I will double check. I will look for the stripes when I pull the spring (as soon as it stops raining). I didn't notice any marks, but I didn't really look, either.
Chip and spring came from Chris Semple. Haven't talked to him yet to see if I could have gotten the wrong one by mistake.
Thanks for the help.
Chip and spring came from Chris Semple. Haven't talked to him yet to see if I could have gotten the wrong one by mistake.
Thanks for the help.
Trending Topics
#9
![Default](https://www.audiworld.com/forums/images/icons/icon1.gif)
I guess I assumed that making the wastegate adjustable meant ADDING spring pressure. Could it be used to decrease spring (and boost) pressure?