Any gains in going to 4" MAF pipe?

[bogie1]

Check out my combo.

My Question is if I go to a 4" MAF pipe and larger MAF sensor will there be any gains or are my stock heads the bottle neck ?
Currently running a 3" maf pipe and 3"Impala MAF sensor. My turbo inlet is 4" .
Thanks

 

[STP]

3" MAF has been nines..I would put your money elsewhere.

 

[bogie1]

tks STP--that answers that--I just started another thread to help me knock off .4 so I can tickle the 10's.

 

[STP]

What timing are you running?

 

[bogie1]

I have an extender chip for alky that is 23/21.
I have it set for 2 additional * low gear and also added in 4* total timing with the Trans +.
I then have it set to take out 3.3 * @ 4400 , 6.6 * @ 5400.
so I guess 29/ 23 up to 4400 rpm then 27.7/21.7 up to 5400. I still have the original valve springs so I doubt I am going any higher than 5400.
On my last run(my best run) I had 0* KR with these settings.
I am spraying Razor's PAC Alky.