Hi, I have 95 camaro z28, with a 383 and a4. I am having problems with the idle to 2000 RPM. I am running a little lean by the BLM's. so I increased fuel pressure to 50psi. OK run's better, I had stock MAF laying around, so I removed the screen and cleaned it. I just wanted to see if it would make a difference, so I switched the Granatelli MAF, and I noticed the throttle response was much better. I put the fuel pressure back to 44psi. It seem seems be running fine now. I am in the process of hooking up a wideband. I will see how the blm's are. Was wondering if MAF could make that much of a difference? Thanks Ray

 

Using the crap Granatelli maf will make any engine run rough. You just proved it with the switch to the stock maf.
You are lucky you didn't screw up stock one by removing the screen and had to continue with the Granatelli maf.

 

So they are crap, that is the first and last one. what is a good brand?

 

Just continue to use the stock one. Its air flow is more then enough for a 383.

 

OK, Thanks for the help, guys.Ray

 

Granatelli.... tuning with the fuel pressure..... posting on Advanced Tech (wrong forum) - 3 mistakes.

Let's move this where it belongs

 

I have been a Bad boy