Inconsistent boost problem??
08-11-2009, 06:38 PM
#1
Racer
Thread Starter
Join Date: Jun 2002
Location: manchester, NH
Posts: 251
Likes: 0
Received 0 Likes
on
0 Posts
Inconsistent boost problem??
Can a failing wastegate have something to do with inconsistent boost?? I have checked for boost leaks and came up zero. Sometimes while on track it hits 15 and others is like 12-13lbs. I have the Vitesse map sensor installed and it runs like a horse with the reins pulled back as opposed to running just 3 weeks ago like perfect. Other ideas to check? Thanks
08-11-2009, 06:42 PM
#2
Addict
Rennlist Member
Rennlist
Site Sponsor
Rennlist Member
Rennlist
Site Sponsor
WG or boost controller. If neither, start looking at the exhaust, but at this stage it's a low probability. Of course pressure testing the system and checking the BOV are common first aid procedures.
08-11-2009, 08:07 PM
#3
Racer
Thread Starter
Join Date: Jun 2002
Location: manchester, NH
Posts: 251
Likes: 0
Received 0 Likes
on
0 Posts
Boost controller is black ****, can it fail?? I have pressure tested the system as in the past but came up with nothing. History---- I installed vitesse kit and ran good but seemed like it should have more. Then found a small leak in the line to the KLR and everything was great. Ran 1 insane track day(the fest) and then parked it. Two weeks later pulled it out of the garage and went to the track and it had boost inconsistent and ran kind of like it did before I found the last boost leak but now I can't find any leaks. Wastegate is a Lindsey dual port.
08-11-2009, 10:27 PM
#4
Racer
Thread Starter
Join Date: Jun 2002
Location: manchester, NH
Posts: 251
Likes: 0
Received 0 Likes
on
0 Posts
The BOV is a billet style. So check for exhaust leaks before the wastegate, after or both???? Thanks John
08-11-2009, 10:30 PM
#5
Three Wheelin'
Join Date: Jul 2002
Location: Connersville IN
Posts: 1,807
Likes: 0
Received 0 Likes
on
0 Posts
between the manifold and turbo and the flnges on the WG. The black could fail but not likely, have you tried adjusting it when you're not getting much boost?
08-11-2009, 10:50 PM
#6
Racer
Thread Starter
Join Date: Jun 2002
Location: manchester, NH
Posts: 251
Likes: 0
Received 0 Likes
on
0 Posts
Yes I increased the pressure by turning up the **** but I don't remember if it held.( I don't think it stayed at 15 very long if I recall). Thanks, I'll check for exhaust leaks tomorrow.
