Car wants to stall with under heavy braking/fast stop!

[Chalky]

Having an issue with with stalling. When coming to a slow stop, car seems to hold desired idle. when I bring speed down quickly and bring the car to a stop, it drops below desired idle rpm, drops down to about 500, tries to catch itself and will die. I am not aware of any other quick decel issues and this only happens with the clutch in at a full stop

I have tried to slow down decay rates in TC and TF but it doesn't make much difference other than now when it does catch, the idle hangs slightly.

All other parts of the idle are fine with no hunting, and smooth engine accel.

Appreciate any suggestions.

[WHYTRYZ06]

tune the idle tables....

B4307
B4309
B4315
B4308

set up some maps to look like these tables, and you'll be in business

I have a very radical setup compared to yours and I tuned these tables and have no problems..

[Bruce Melton]

Float level set too high?

[TAQuickness]

sounds like your cracker, maybe the follower, could use a bit more decay delay

[Doc]

What is spark doing during the drop?

[jfpilla]

Try setting B4311 and B4312 to 12 and 11. If it stops doing it then it's likely the TC/TF need work. If it continues it is likely DAF/timing need work.

[Chalky]

Float level set too high?

Thanks was it. Thanks Bruce. Damn updraft carb!

[jfpilla]

Thanks was it. Thanks Bruce. Damn updraft carb!

When did Tony start porting 90mm carbs

[Chalky]

sounds like your cracker, maybe the follower, could use a bit more decay delay

I tried adding a little at lower rpm and also reduced decay but problem persists.

[Chalky]

What is spark doing during the drop?

Doc:

Just looking at some logs from weekend. Spark seems to hold @ 24* from 900 to <600 rpm. When I add fuel to save from stall, timing drops to 9*

I had a a log going today using air.pid but when car stalled, I lost the end of the log.