My car is hesitating, help

[Eng. Tariq]

Hi,

I have 97 Civic Ex coupe with SRI, Catback gredy evoII exhaust, B&M Fuel pressure Regulator/gage (set in 42PSI/32PSI w/o and with vacume), Fuel rail, new oil filter, new full tune up, i checked the timing and it was perfect and no CEL.

when i start my car cold it start with low rmp then takes 30 sec to increased and then after warming up, it will get around 750 rpm then after driving it drops especially when i use the break and stop on the traffic lights and it will be super low (it will be on the mark next to zero) and when i remove my foot of the break it starts to increase the rpm

Please, help me

 

[Eng. Tariq]

I did fix the problem using three bottles of seafoam, half with the oil, one with the gas and 1.5 bottles in the vacuum hose of the intake manifold.
knock on the wood, it is working super fine, thanks God then thanks for the Seafoam :-))