Last time I've driven Cobra I've laid on throttle then all of sudden it died, I've restarted it and limped home and just parked it. Part of fuel hose was leaking (rubber started splitting) I've figured it was low fuel pressure and I replaced it. Now it doesn't die on me but idles anywhere from 900-2000K on cold startup, doesn't die. Once it starts warming up it still does it from 900-1200K (normal idle on it is ~900)
I was wondering what went wrong, boost leak somewhere or? I've parked it for winter but would like to fix it later so I can drive it next summer.
Here's build:
306 mexican shortblock with forged rods and pistons (9to1), moly rings, steel main girdle all ARP hardware, fluidampner, double roller t-chain with TFS stage 2 cam, moroso 1 piece pushrods, TFS 1.7 roller rockers, TFS R heads box stock, TFS R intake box stock, TFS phenolic spacer, TFS 75mm t-body elbow, bbk 75mm t-body, zex nos 75mm plate dual shark nozzles, bullet 75mm blowthrough mass air with 42ib injectors, 255 in tank with a 255 frame mounted fuel pumps aeromotive regulator, procharger D1 with 3.5 inch pulley and 3 core intercooler, k&n big conical, hooker super comp headers, 3 inch exhaust with cats, x-pipe and dynomax bullet mufflers. msd 6btm box, msd super conducter wires and coil, 3.55 gears auburn posi, subframe connectors, saleen springs, steeda caster/camber plates, koni shocks, UPR clutch quadrant.

 

Sounds like you have developed a vacuum leak somewhere.

 

You may have popped the intake gasket, use a lil starting fluid very carefull or a propane gas to help find the vacuum leak.

 

That's what I thought, finding it is a problem

 

Go under the car and light a match... problem solved .