rpm drops and car stalls when i slow down

Okay i am about to blow this car up , running stage 3 for 5 months with no issues - recently got a CEL (burnt exhaust valve)

got the heads rebuilt.

car drives fine however when i push on the clutch to slow down the car stalls (only happens on 1st gear) ? the shop said they flushed the clutch but its still doing it. i double checked all the IC piping for vac leaks everything is tight. (the brake bleed hose is fine also.)



any ideas of what to check ?
2007 lgt 5-speed

New finding, happens when fully depress the clutch studders and stalls on the highway too. Noticed when crusing not on clutch or gas im at vacuum, when I press on the clutch its builds slight preesure. This is seen on my boost gauge

I had similar problem. The car dies when idling (regardles of the speed of the vehicle).
AVCS solenoid went bad in my case.

Krzys

PS My car is not modified.

doesnt so much die at idle more of when i depress the clutch fully

Sounds like a post MAF leak somewhere.

any suggestions of where to look? its a brand new maf, i used about 1/2 can of carb cleaner to locate vac leaks but no change in rpm -- sprayed everywhere not able to source out the problem? Question is would a open source tune have the same learn conditions as a stock ecu ? the stalling seemed to have stopped after driving around after pulling the battery. however the dip in RPM and slight increase boost pressure indicated on my gauge remains every time i depress on the clutch when the car is in standing or in motion.

have you ever figured out the problem?