2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

someone please help boost to high

Thread Tools
 
Search this Thread
 
Old Jun 28, 2005 | 07:11 PM
  #1  
pittbulls's Avatar
Thread Starter
Full Member
Tenured Member 05 Years
 
Joined: Jan 2005
Posts: 80
Likes: 0
From: albion ny
someone please help boost to high

i have an 87tll my boost is to high and the fuel cut is kicking in if i get on it it is good untill i get to 5500rpm and then i starts to bogg and hesitate then i have to shift the boost gauge is saying almost 40psi there is a t fitting for the presure sensor and the bov that got to the nipple that the bov goes to so they are together all emissions removed and everything is stock if i drive it like my grandmother i have no problems
Reply
Old Jun 28, 2005 | 07:18 PM
  #2  
SonicRaT's Avatar
Super Raterhater
Tenured Member: 20 Years
iTrader: (6)
 
Joined: Dec 2001
Posts: 10,630
Likes: 3
From: NY, MA, MI, OR, TX, and now LA or AZ!
Put a new vacuum line from your compressor housing fitting (right underneat the outlet to the intercooler), and run it the wastegate and see if that does anything. What kind of boost gauge do you have? 40psi would have killed your engine by now.
Reply
Old Jun 28, 2005 | 07:23 PM
  #3  
kris1212's Avatar
Woohoo! Got my permit!!!!
Tenured Member 05 Years
 
Joined: Apr 2005
Posts: 56
Likes: 0
From: Lompton, CA
40 psi? wow
Reply
Old Jun 28, 2005 | 07:50 PM
  #4  
RotaryEvolution's Avatar
Sharp Claws
Tenured Member 15 Years
iTrader: (30)
 
Joined: Oct 2003
Posts: 5,107
Likes: 50
From: Central Florida
i think he means 40mm/Hg(~9PSI) which is the peak of the stock boost guage which is where stock fuel cut comes into play.

my suggestion, port the wastegate.

Last edited by RotaryEvolution; Jun 28, 2005 at 07:55 PM.
Reply
Old Jun 28, 2005 | 07:56 PM
  #5  
88t2romad's Avatar
(_8(|)
Tenured Member 05 Years
 
Joined: Jul 2004
Posts: 2,034
Likes: 0
From: Manhattan, Kansas
40mm/hg is like 7 psi. Wow pittbulls, clear up what you wrote, its really hard to understand!
Reply
Old Jun 28, 2005 | 07:58 PM
  #6  
RotaryEvolution's Avatar
Sharp Claws
Tenured Member 15 Years
iTrader: (30)
 
Joined: Oct 2003
Posts: 5,107
Likes: 50
From: Central Florida
yeah well im quite sure it isn't 40PSI and i'm bad with metric conversions...
Reply
Old Jun 28, 2005 | 09:05 PM
  #7  
pittbulls's Avatar
Thread Starter
Full Member
Tenured Member 05 Years
 
Joined: Jan 2005
Posts: 80
Likes: 0
From: albion ny
sorry about the mistack it is a stock boost gauge and it is almost all the way to the top and the top says 40 so sorry about that and at 5500 if i let up on the gas a little it will smooth out
Reply
Old Jun 28, 2005 | 09:35 PM
  #8  
pittbulls's Avatar
Thread Starter
Full Member
Tenured Member 05 Years
 
Joined: Jan 2005
Posts: 80
Likes: 0
From: albion ny
Originally Posted by SonicRaT
Put a new vacuum line from your compressor housing fitting (right underneat the outlet to the intercooler), and run it the wastegate and see if that does anything. What kind of boost gauge do you have? 40psi would have killed your engine by now.
do you mean at a tee fitting or take it off and run it to the wastgate and block off the other half ove the hose
Reply
Old Jun 28, 2005 | 09:39 PM
  #9  
SonicRaT's Avatar
Super Raterhater
Tenured Member: 20 Years
iTrader: (6)
 
Joined: Dec 2001
Posts: 10,630
Likes: 3
From: NY, MA, MI, OR, TX, and now LA or AZ!
Well, since it obviously isn't 40psi, it could be a few things other than what I said. Have you installed any free-flowing exhaust/intake peices at all recently? If so, it's probably creeping up to boost-cut.
Reply
Old Jun 28, 2005 | 09:39 PM
  #10  
RotaryEvolution's Avatar
Sharp Claws
Tenured Member 15 Years
iTrader: (30)
 
Joined: Oct 2003
Posts: 5,107
Likes: 50
From: Central Florida
your statement is contradictory, you said it was stock yet all the emissions are removed and the BOV is teed off. i assume you have punched out cats or free flowing exhaust installed? if you do then you need to install a fuel cut defenser and put in place a way to change your fuel mixtures, ie. an SAFC/2, HKS Fcon, standalone engine management, etc...

porting the wastegate so you can control your boost level is also a benefit if you are pushing higher boost levels than your fuel system can handle. porting the wastegate is the cheapest method to cure your problem for now until you want more boost.
Reply
Old Jun 28, 2005 | 09:45 PM
  #11  
pittbulls's Avatar
Thread Starter
Full Member
Tenured Member 05 Years
 
Joined: Jan 2005
Posts: 80
Likes: 0
From: albion ny
i didnt know that the exhaust would give me more boost i am sorry that i didnt tell you that so i should port the wastgate and get a fcd but i do have another guestion where does the fcd go exsactly not shure just courieos thanks guys
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
SakeBomb Garage
Vendor Classifieds
5
Aug 9, 2018 05:54 PM
High_Carb_Diet
Power FC Forum
1
Sep 5, 2015 09:07 AM
gabescanlon
3rd Generation Specific (1993-2002)
7
Sep 5, 2015 12:09 AM




All times are GMT -5. The time now is 02:04 PM.