Not so good! Good mph but horrible times and still stuck at 14 psi. 13.5@108mph with a 2.35 short time(yuck)

O2 sensor is shot, will replace that after gutting the restriction in the exhaust. Then maybe i can get 19 or 20 psi and some low 12's.


Pete

 

that is still a decent time!! about .8 quicker then me

get that 60 foot down!!

you have a beast of a car!!!

 

I've run 20 psi through the stock exhaust, are you sure that's the problem?

 

and everyone has been railing me for a 2.3 short time for my first run EVER at the track..

what tires are you running?

 

I'm not even breaking the tires loose on the launch. I can't get them to haze until the 1+2 upshift. I'm using Dunlops for tires pretty mushy once heated. I used to pull 1.9 and 2.0 on **** tires with my old 350/5 speeed t/a. I' m almost sure it's the exhaust somewhere either a leak on the headers or a bottle neck.

The exhaust isn't stock anymore different cat, no flex connector, but the cat is kinda puny.I just wanna get to atleast the stock boost levels so i can dyno it. It runs great up top and the tuning issues are coming along, but i just want to be able to up the boost when the 116 is used, and get some real times down....


Pete

 

you need a stall converter.. your saying you can't build enough boost to launch with and spin the tires? then that's your solution. GN guys complain all the time about not being able to or taking forever to build boost at the line when they have a stock stall in there, get a 2600-3000 stall and the car just goes bananas

 

Pete,

if you haven't already, go to

http://www.turbobuick.com
http://www.89tta.com
http://www.gnttype.org


Lots of help, info, toubleshooting, etc.

Highly doubt its your converter.

 

if its the case that he can't rev high enough to spool his t44 at the line because his stall doesnt allow it,... that in fact is a common problem. However, i'd love to hear more about it and maby give a better answer if that isn't right.

 

First 14 psi is a little low since stock is 16.5 psi. It's apparent he has touble making boost period. Many things can be happening. Wasegate "y" hose could be installed backwards, wrong size orifice in "y" fitting, GN's are .050", TTA's are .040", wastegate could be partially stuck open, broken. etc, etc. All creating low boost problems.

Plus a te44/ta49 is has virtually the same turbine wheel as the stock turbo. Works just fine with the stock D5 converter.

So why recommend a big $ item when it might just be flip flopping a hose.

 

no he doesn't, a stock D5 converter will allow a stock turbo, along with his turbo to spool just fine, he has other problems, adding a higher stall converter will just add more problems...

 

True, his boost problems could very likely be caused by any number of things. However, I don't think that even if it's not required to have a stall with that turbo, it would help dramatically. With a torque motor like the 3.8T, and a very good mph like 108 with 'only' a 13.5 et, I don't see how it would be a bad idea at all to consider a stall. Precision turbo recommends a 2600stall with their ta49, and I don't think it would be smart to say with any aftermarket turbo a stock converter is 'just fine' if your looking for maximum et.

 

a stock D5 is rated at 2400, and can flash a bit higher, PLENTY of guys are running that turbo on stock converters and having no problems. He needs to get his boost problem solved first, like I said, thowing a different converter in there won't cure his problem..