2003 s10 multi misfire

i have a 2003 chevy s10 2.2L under hard accel the check engine light comes on and i get a multi misfire code i have replaced the plug wires and coils bt no luck code doesnt come up but i still have lack of power and the truck misses under hard accel. i have a cold air intake and cat back exhaust but both are clean and flowing good. any sugestions.

Have you checked the plugs?
Good AC-delco plugs?
Good hot blue spark to all plugs?

Fuel pressure up good?
How many miles on it?
K&N oil type air filter?
Has the MAF sensor been modifed or a tempt adjustment swith on air intake?
Does check engine light flash when it has a engine miss?
Any air leaks inthe air intake?

i have good plugs and good spark
check engine light flashes sometimes but goes out
no leaks in the intake and yes its oil type

Make sure it has good fuel pressure.
Also clean MAF sensor with spray special cleaner.
The oil type filters can oil up and mess up the MAF readings.
If you can get it on a good engine capable scanner and check fuel trim and maf sensor readings and other sensor readings..
Also read out which cylinder is missing and how many times.

A lot of missfire on one cylinder can help pinpoint the problem.