car wont boost over 4 pounds
 

my friend just turbo'd his 96 ek coupe, sohc vtec

its an hf manifold to a tdo5h turbo


the car wont boost over 4 pounds, we looked for boost leaks, and took the vacum line off the wastegate and it still wouldnt go over, its stock ecu, injectors, and pump, he is waiting on the ecu to come in

help

Re: car wont boost over 4 pounds
 

put it in gear

Re: car wont boost over 4 pounds
 

we drove it through all gears

Re: car wont boost over 4 pounds
 

is the internal wastegate adjusted to tight ?

Re: car wont boost over 4 pounds
 

turbo blown



there is a boost leak some where just looking at them and thinking "these all look good :1" inst the way to find it

Re: car wont boost over 4 pounds
 

So you're using NO engine management? you're prolly getting a cel then?

Its prolly leaning out and missing.

Re: car wont boost over 4 pounds
 

Ill go with your wastegate flapper is opened.

Re: car wont boost over 4 pounds
 

you are a tool ! :1

Re: car wont boost over 4 pounds
 

What's the exhaust setup? A clogged cat will cause that.

Re: car wont boost over 4 pounds
 

Its a good thing it wont go over 4psi :-X

Re: car wont boost over 4 pounds
 

exactly what i was thinking

do it right the first time, or don't do it at all.

Re: car wont boost over 4 pounds
 

the turbo also leaks a little oil could thta be a problem?


we put in a dms, resistor box, and an ecu that was tuned on a t25 with dsms on single v, so kinda similar, but still no luck?

Re: car wont boost over 4 pounds
 

"Looked for" or "pressure tested the entire charge-pipe & exhaust systems"???

The last set of pipes I welded up actually had a pinhole leak right at the overlap of a MIG weld. Not enough to see w/o pressurizing the pipes & checking w/soapy water.

I also know some n00b that was impatient putting his cheap kit on, and his first time out it made 10psi on the first pull for ONE gear, then from then on it was ~2psi. What happened? His turbo flange gasket broke in 4 parts, creating a massive exhaust leak.


You *will* come to find a leak in your pipes or somewhere in the exhaust pre-turbo. It could be a warped flange, ripped coupler, bad gasket, crack, or even a bad WG arm that has left the WG flapper opened.

Re: car wont boost over 4 pounds
 

i guess he messed with the wastegate diaphram and it works fine now