ok i had a y8 motor with RC 440's tuned with hondata, ran perfect.
i ended up blowing the headgasket and warping the block and head,
i had a y7 motor laying around so i dropped that in,
my problem is that when i try to start it when its cold it will just crank
and wont turn over, also it just floods the motor an you can smell the
gas, after a while it will turn over only if i hold down the throttle.
when its running the a/f guage is in the rich range
i'll drive the car around and its fine boost is good too, my only problem is when
i try to start it cold, and sometimes when its warm i'll shut it off and restart it
it wont start unless i hold down the throttle.....i checked for everything, any ideas????

 

every motor is different. you may need to retune again,cause it cant be good for your motor to run rich like that

 

anybody have the same problems?