Boost Levels?

[jamal]

I bought a 91 AWD Automatic Talon Tsi for $300 dollars that had a blown engine. My friend had an engine out of a manual with a new head on it he sold me for $500 bucks. It was just rebuilt, the head was new.
Cams are manual cams too.

Ok, once I got this other car home I found out the tubro was pretty much melted.

I bought a 14b turbo off this guy for $150 bucks.

I also bought a 3 inch down pipe, 3 inch exhaust, and a magnaflow muffler. No cat..

I currently have all this on the car. Its pretty much stock. I still have the 390cc stock automatic injectors too. I have a set of 450cc's I'm going to install when I get around to it.

My question is, what should my boost levels be? I installed an Autometer 30/30 boost gauge. My vac level is 15 when I idle, 20 when I'm going down the road and let off the gas. When I get on the gas really hard I hit 15 pounds on the turbo. I hit fuel cut too due to the small injectors but is 15 too high? Should I install a manual boost controller and back it down some?

Any thoughts?

 

[BrokeTurbo]

I would saw 11lbs untill you do something about the fuel. Im running stock everything and im at 11lbs, and I dont want to go anyware higher till i upgrade fuel pump. HTH

Gabe

92AWD Laser

 

[Violater101]

15lbs is not to high

 

[1stgenTsiFwd]

go down the 14b with stock pump and injectors should be ran at about 12.8-13 psi

 

[AWDGSXownsU]

with the 3 inch exhaust he is probally creeping up to 15psi. shouldnt hurt the car but you never know. i hear anything over 14 without a fuel pump is bad. getting a manual boost controller wont lower the psi. the lowest you can go is what the wastegate open at. regardless i do not believe that the wastegate is the probelm. i think its boost creep.

that my .o2 cents whats your ?

Manny
92 GSX

 

[cprracing]

i have a 16g and all stock fuel do a fuel pump rewire i did and havent hit and problems on 18 psi when racing

 

[jamal]

Hrm ok well what is a Manual Boost Controller used for then? I was under the impression it was used to limit your boost.

One of my friend gave me a Hallmen Manual Boost Controller he had laying around.

Do you really need a bigger fuel pump for 390cc/450cc injectors? I mean right now I have the 390's and I'm having these problems. I was going to put the 450cc's in to give the car a lil more gas but hell 390's and 450's are stock. Why would I need a bigger fuel pump?

I also have a new in the box Apexi Super-AFC just sitting on my desk. Would it be worth using it? I was going to throw it on EBay for like $200 bucks, I only paid $100 bucks for it new in the box. Kid who sold it to me was hard up for cash.

 

[cprracing]

no just do the rewire and the bigger injectors.

 

[LaserRST]

Use the afc and save for bigger injectors!! You have feul management now, thas what gits high boost levels. I agree with cpracing rewire and 450 at least... I will buy that AFC for 200.00 in a heartbeat. PM me if it does go on ebay.

 

[jamal]

Well what would happen if I were to put the 450cc injectors in right now without wiring in the AFC? I still have the normal automatic ECU and such. Would I need the AFC to set them up right?

Should I use the AFC then, hell I dont know