Engine dies at idling when the gaspedal drops

[Kitte]

Wonder how i can make the engine stay at idling after i have dropped the gaspedal

i guess that there are to much fuel when the throttle is closed?
How can i solve this?

[Keith@HPTuners]

We need much more information that that.

What type of vehicle is this? What size engine? What type of engine modifications? What have you done to the tune already? etc. etc.

[Kitte]

Ok i have an corvette c5-98 ls1, vortech v2 supercharger kit, 42#injectors (green tops), borla headers, borla exhaustsystem, zo6 intake,
I haven´t done so much tune yet because we have winter in sweden but i have started the engine after the superharger installation and it run fat on fuel so we tried to lower that and it got better but the engine dies after i have pressed and dropped the pedal at idling

[Bill@HPTuners]

did you adjust your ifr rable to reflect the new injectors...you say you lowered something but what "something" are you referring to?

[Kitte]

We tried to tune the maf vs freq to 0 and fa mult stage1 vs time and lower the numbers, we haven´t adjust the IFR table yet... i did check another car that had supercharger installed with 42#injectors and took his numbers...

[Kitte]

On my ifr table it starts on 3,66 and finish with 3,98 how can i tune it so the fuel will be right, can i lower the first to 3,20 or something?

[Bill@HPTuners]

the lower the number the more fuel gets dumped in.

[Kitte]

OK thank you i will try this!