Do YOU hold boost to redline?
#1
Back from teh deadly!
Thread Starter
Join Date: Feb 2001
Location: Louisville KY 40299
Posts: 1,163
Likes: 0
Received 0 Likes
on
0 Posts
Do YOU hold boost to redline?
Just wondering how many people do...This 89 T2 cant seem to do it Any ideas why? I was thinking a weak wastegate or something...I guess a leak somewhere in the intake tract could cause it, but i really doubt that. So what can be done to remedy this?
Thanks
Thanks
#3
Back from teh deadly!
Thread Starter
Join Date: Feb 2001
Location: Louisville KY 40299
Posts: 1,163
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by Felix Wankel
Mine does now, but it wouldn't with a stock turbo.
Mine does now, but it wouldn't with a stock turbo.
But knowing Im not the only one makes me feel better
#5
I am also unable to hold max boost up to -or near- redline...
The best I can do is slowly build boost until it hits 420-430mmHg up to 4K-4.5K rpm (thats about 8.5-8.6 psi), then just see my boost fall to 300mmHg as I reach redline...
If I just WOT from the word "Go", I hit max boost instantly, but then the boost bleeding is much more evident....and "painful" . Of course the situation was vastly worse before my new catback....and I suppose it will be even better after TID/DP...
The best I can do is slowly build boost until it hits 420-430mmHg up to 4K-4.5K rpm (thats about 8.5-8.6 psi), then just see my boost fall to 300mmHg as I reach redline...
If I just WOT from the word "Go", I hit max boost instantly, but then the boost bleeding is much more evident....and "painful" . Of course the situation was vastly worse before my new catback....and I suppose it will be even better after TID/DP...
#6
I'm a boost creep...
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes
on
8 Posts
Re: Do YOU hold boost to redline?
Originally posted by adamlewis
.This 89 T2 cant seem to do it. Any ideas why?
.This 89 T2 cant seem to do it. Any ideas why?
Trending Topics
#8
Originally posted by steelec
This is for ACE, hey, what kind of exhaust do you have, is it stock and do you have cats?
Thanks
This is for ACE, hey, what kind of exhaust do you have, is it stock and do you have cats?
Thanks
Stock pre-cat and cat still in place. Not for long though (at least the pre-cat...) Also the main cat is a bit "lighter" and more "free flowing", cause there are big bits missing The car is still 100% legal though...
The way I figure it, even if DP gives me 1psi, and the TID another 1psi (absolute minimum values), I'll be looking at 10-10,5psi easily Got to watch out for that fuel now....
#9
Back from teh deadly!
Thread Starter
Join Date: Feb 2001
Location: Louisville KY 40299
Posts: 1,163
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by BLUE TII
Whats your exhaust and intake set-up? TID and open exhaust made my boost go up near redline on my S4. Maybe it was all the hot air from overworked turbo though, he he
Whats your exhaust and intake set-up? TID and open exhaust made my boost go up near redline on my S4. Maybe it was all the hot air from overworked turbo though, he he
#10
Rotary Motoring
iTrader: (9)
TID mod helped me in upper rpms alot. Turbo doesn't have to try hard to draw the air in through the convoluted s curve intake. If that doesn't help, check the exhaust turbine for damage? I don't know on S5. Mine was S4 and crept at high rpm. Stock boost levels dropping off? or a boost level raised w/ aftermarket boost controler?
#11
Back from teh deadly!
Thread Starter
Join Date: Feb 2001
Location: Louisville KY 40299
Posts: 1,163
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by BLUE TII
TID mod helped me in upper rpms alot. Turbo doesn't have to try hard to draw the air in through the convoluted s curve intake. If that doesn't help, check the exhaust turbine for damage? I don't know on S5. Mine was S4 and crept at high rpm. Stock boost levels dropping off? or a boost level raised w/ aftermarket boost controler?
TID mod helped me in upper rpms alot. Turbo doesn't have to try hard to draw the air in through the convoluted s curve intake. If that doesn't help, check the exhaust turbine for damage? I don't know on S5. Mine was S4 and crept at high rpm. Stock boost levels dropping off? or a boost level raised w/ aftermarket boost controler?
Thread
Thread Starter
Forum
Replies
Last Post
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM