Problems with lifters(after upgrade)

[Snake]

Ok I will make this short!
I was going up a long hill (highway)floor it boost come up everything ok take the exit ramp whne I come to a stop a GOD@#%% noise (taping sound)could be heard coming from the engine bay.
I am preaty sure that it must be the lifters.

Now you guys should know that I had to recently replace my lifters(1 month)
Ok so proced my way on home and everytime the car goes into BOOST it starts to hesitate(no power when in boost)!!

After a while all of a suden the taping stops.I then ran the car hard again and when boost came on everything was OK.
What could this be!!!
I ask you I use 10w-40 oil.
I live in Puerto Rico so cold climate its not to worry could I go 20w-50 would this help or could be something else??
How about a DURA LUBE, PROLONG or something else that could help me!!

By the way my lifters were upgraded(sorry had to say it again)

Any opinion on this matter would help since I am beginig to start thinking on selling this car if keeps going like this!!!

 

[Snake]

Well today in the morning before going of to work I decided to change my oil an filter.
So I got me 5 quarts of Castrol 20w-50 and the OEM oil filter.
And guess what the car started and no tick(valve taping)what so ever!!
And yes I am hapy as hell!!!
Went for drive and floor it hard came to a stop and no valve taping when the engine is at idle it even sounds smmother than before!!
I did this at my risk does someone here thinks that 20w-50 oil is to heavy for the 4G63 engine??
Let me know ok.

 

[Defiant]

How many miles on it? Thinner oil is to get into tighter clearances, and to aid gas mileage by its reduced shear friction.

20W-50 seems a _little_ thick, although what I remember of the climate during my visit to Manila, I'll bet you do just fine. Next time, try 20W-40.