What's a better way to control alky pressure? Boost, or MAF?

[BuickMike]

I've been seeing controllers out there now that can control the Alky by the MAF signal instead of by boost and am thinking this is a better way to go. Right now I'm using a Hobbs switch and it flat out sucks.

I'm just curious as to the opinions of others on this board.

Razor, have you ever tried just connecting your controller straight up to a MAF to see how it works? I'm just wondering since the MAF puts out the same voltage as the MAP.

 

[Razor]

You been hanging around the Ford forums..

Our MAF outputs frequency not voltage. There is the load issue not addressed by tracking off of MAF. See you can get the boost way higher than the airflow. And you'd be in a bunch of trouble. Then you have the issue of the stock MAF getting pegged at 255 grams..then what?

If anything, would need a Z06/LS1 MAF, then work it through the translator.. = more complexity.

You have such an easy car.. and dont realize it.

I told ya months ago...

 

[BuickMike]

Thanks for clearing that up Razor. I just assumed that since other sensors in the GN use a 5V output signal that the MAF does too.

The reason I was initially turned on by the MAF based controllers is because of my experiences so far. Right now I have a PTE-44 and a 3200 Vigilante converter, which means very quick spoolup. I've got the alky pump set at 60psi with a 10gph nozzle and the Hobbs switch is set to 14psi and I still bog in the bottom end. The car will even misfire if I nail it at too low of an RPM. However, if I get on it from a roll no problems. So I thought maybe a controller that went off of the air flowing through the MAF verses pressure would be better.....then again maybe it's just the Hobbs switch.

 

[salvageV6]

A $5 resistor and a relay with second Hobbs switch would cure your problem.

Run the pump at half to two thirds voltage starting at 12-14 psi. and use the second hobbs switch to bypass the resistor and run full voltage at say 18-24 psi. where your car likes it.

Quick and easy with not much thinking needed.

No bogging and smooth transition to high boost.

 

[Red Regal T]

Maybe your injecting too much alchy on turn on. Mine comes on at about 8 lbs of boost, and I have no hint of bog and never did. I use a nitrous nozzle with a .032 jet. I know my pump pressure is more than 60 PSI but can't say what it is exactly.