94 Civic
b20v
endyn b16 head
85mm supertech 12.5:1 pistons
eagle rods
twm itbs
plm header
id1000's
walbro 255
m24xx cams

tuned on dyno made 230/160.

I am not running a IACV and all temp corrections have been removed, as they didnt seem to have any affect on this issue.

Like title states, after initial start up, a lil blip of the throttle itll idle right around mid 13's to 14's, then gradually, idle comes down and AFR goes lean, stalling the motor. Itll do this until the car is about 150 degrees (via s300 ect temp gauge, no datalog right now).

also, if i try to drive it or just move the car in gear, itll sputter, again until its "warmed" up.

a friend with a boosted b series, was having the same "sputter til warmed up" issue on his CPR setup, he changed to OEM distributor (boosted car, w/m&w) problem completely went away.

My question is: is this something that can be tuned for? or is it strictly an inherent flaw with the CPR setup?

Be easy, Im not well trained or well versed with this stuff, any help is appreciated.

 

It sounds like an issue with the warm up enrichment and timing decay? I think thats the term

 

That's something to look into. Thanks!