with all the mods that i have on my car it dosent feel like it is running very smooth or efficient. i know that my A/F ratio is off pretty bad so i was wonderin what brand of wideband o2 sensor should i get or even if the wideband would fix my problem? my car idles really low at 6-700 rpms.

 

Mods like _____?
Why do you think your a/f is off?
Are you using an original o2 sensor? How old is it?
Widebands only TELL you what the radio is...tuning fixes it...
Your idle is correct...

 

mods= intake, headers, exhaust, radiator, MSD ig box, ex coil, cap, wires and plugs aftermarket cat
well i cel came on and spit out a code P1259 which is a vtec malfunction and i already bought and put on a new vtec solenoid.
what was listed below the code is -manfacurer control and -fuel air metering. my car dosent feel very smooth and i feel that i can get more power than i get

the sensors have been on the car since i got which was at 68000 and i have 92000 on it right now

 

(header, not headerS...you only have 1)
None of the things you have "modded" require the use of a wideband o2 to monitor AF ratio. Your engine is still running as stock, aside from different spark

That o2 is pretty old - I would change it. Get a denso or ngk or dont even bother:
https://honda-tech.com/zerothread?id=1890859


Has the cel gone away since changing the solenoid? Was that new or used? If used, are you sure its a good one? How was it running before the cel?