Primary boost problems
#1
Junior Member
Thread Starter
Join Date: Sep 2001
Location: Alpharetta GA
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
Primary boost problems
Got my car back together with a Petit rebuit turbo unit, K&N filter (in airbox) new mid cat and down pipe. 64MM pill in the wastegate actuator line and a 60MM pill in the precontrol line.
Problem is now my mileage is about 3 mpg down from before (same driving conditions) and my primary boost tops out at about 7 psi (8 psi) if its cold out) don't see much of a drop before secondary kick in. Secondary quickly rises to 12lbs.
Does anybody have a short list of ideas that are causing this primary boost level problems?
Thanks
Problem is now my mileage is about 3 mpg down from before (same driving conditions) and my primary boost tops out at about 7 psi (8 psi) if its cold out) don't see much of a drop before secondary kick in. Secondary quickly rises to 12lbs.
Does anybody have a short list of ideas that are causing this primary boost level problems?
Thanks
#2
Full Member
Join Date: Jul 2001
Location: Smyrna Ga.
Posts: 138
Likes: 0
Received 0 Likes
on
0 Posts
Could be a bunch of things. Could be that if the boost is very strong when the 2nd turbo kicks in (like you said) the precontrol door is open a little. This would route exhaust from the primary turbo keeping it from twisting up all the way?
Kevin
Kevin
#3
There and back again
Join Date: Feb 2001
Location: Camarillo, Ca
Posts: 967
Likes: 0
Received 0 Likes
on
0 Posts
[b]
[b]
I totally agree
Could be a bunch of things. Could be that if the boost is very strong when the 2nd turbo kicks in (like you said) the precontrol door is open a little. This would route exhaust from the primary turbo keeping it from twisting up all the way?
I totally agree
#5
Junior Member
Thread Starter
Join Date: Sep 2001
Location: Alpharetta GA
Posts: 7
Likes: 0
Received 0 Likes
on
0 Posts
OK, good idea, I was thinking maybe its a soleniod problem (oh god, how do test those?). I wonder if the precontrol actuator rod was put out of adjustment during the turbo rebuild. (the turbo housing were a little out of alignment with Y-pipe and I had to tap on them to get them to rotate into alignment with Y-pipe. No big deal but for $2K for the rebuild I wasn't real happy).
Does the tech manual have anything on this. Best 80 bucks I ever spent.
Does the tech manual have anything on this. Best 80 bucks I ever spent.
#6
It's never fast enough...
Join Date: Feb 2001
Location: Miami - Given 1st place as the POOREST city in the US as per the federal government
Posts: 3,760
Likes: 0
Received 3 Likes
on
3 Posts
There are 4 things you can do:
1)Manually adjust precontrol rod
2)Install smaller pill
3)Install Home Depot Racing valve
4)Go non-sequential
Choose..............wisely
1)Manually adjust precontrol rod
2)Install smaller pill
3)Install Home Depot Racing valve
4)Go non-sequential
Choose..............wisely
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
Skeese
Adaptronic Engine Mgmt - AUS
65
03-28-17 03:30 PM