i used my old fuel line as a return and ran a new one with 10mm fuel line

ok so cauld this prob have been from over boosting??
bcause i removed my airboxlastnight and noticed that it was all split and cracked so would maybe a bov help with this???

Andy,
It could be as simple as not getting enough fuel through a single carb although I have seen single carb turbo setups.
This is my setup from back to front:

1. Stock outlet nipple on gas tank removed and a 5/16 inch nipple welded in.
2. ProComp 15 psi fuel pump mounted under car in the back with fuel filter. 5/16 inch rubber fuel line.
3. 5/16 inch fuel line from rear of car to the fire wall in engine bay.
4. Mallory Vacuum fuel pressure regulator
5. (2) 1/4 rubber fuel lines from regulator to (2) Weber 32/36 carbs.
6. Fuel return line from fuel regulator back to the tank using old fuel line. Connected to the top of tank.
7. Vacuum line from intake below the carbs (not connected to the carbs) to fuel regulator.
8. Plastic Floats, 120 jets on primarys and 140 jets on secondarys.
9. Fuel Regulator set to 8 psi at idle.
10. Blow-through supercharger. Max boost 10 psi. Boost gauge connected below the carbs.
11. Vacuum activated Blow-Off Valve. Vacuum hose connected below the carbs on intake.

I use to have leanout until I installed the pump and regulator. Now I get as much fuel as I need.
Each of the webers is running about 300 CFM so a 600 CFM Holley may be your answer.
Let me know if you have any questions.

Thanks.
Ernie

hey man so are u running twin webars?

cause i had everything setup the same but with single weber holley blue pump and malpassi reg and no blow off valve

edit; ernie is there any chance u could put pics up?

and i decided lastnight to try a holley so i got a 180 holley and cleaned that and stuck it on lastnight but now tonight im going to get it runnin na again then try the poorly modded had i made to fit the holley and c how that goes?

ok so here we go guys i have sorted the problem i think
i ended up putting on a 180 holley and then it just drove fine it doesnt starve on fuel anymore well this is my test from driving it but i am yet to stick it back on the dyno to find out for sure
however i did notice when modifying my airbox to accomodate the holleyi found that the meta had cracked and split just on random bits of flat surface so i repaired these cracks modified the box and it drove fine but seemed to have less power then the weber so installed a bov i thought that then it would b able to release the preassure wen needed to hopefully not split my airbox again...

now the only drama is that it runns real hot and i am not running an intercooler if i run one would this help? or should i get a new radiator to help with this????

any help apreciated thanx andy

ok guy's just to let u kno this is still all workin good and i got it on the dyno the other day an i managed to get 68kw atw from my tired stock a14 just it wal a little bit lean up top so i need a slightly larger secondary jet and im set . .