Kevlo911

iTrader: (36)

I have been doing to data logging w/ my SMT6 and my MAF voltage is at 4.2v at 6600rpm(or redline). What is the stock voltage at redline? At what HP does the stock MAF max out at on an NA car? I have read alot of info on boosted cars but I do not know if that applies to NA cars.

JClaw

iTrader: (17)

The 3.0 A32 MAF maxes out at 340 HP (290 whp). Nobody has ever maxed out that MAF on an N/A car.

Kevlo911

iTrader: (36)

Interesting, I wonder what you 3.5 guys are at then. I am no where close to you guy's power and I am at 4.2v.

Larrio

iTrader: (10)

interesting, cause I thought maybe the MAF maxes out at 5v

however it would be interesting to see how much x volts is x hp. If 0.1 v is 10hp, then you still have .8v to the max of 5v (80hp?!)

Kevlo911

iTrader: (36)

So at 4v I am at 272 Crank HP

340/5 = 68
68*4 = 272

JClaw

iTrader: (17)

I will maybe make 245whp once the tuning/timing advance/A/F is done. 45whp is alot and I don't know how someone is going to be able to make 290whp on an N/A VQ35 (vq30 is just way out of the league) short of internal work.

Even with 272deg cams, fuel and timing maps from a 350z, and Crawford Z FWD Plenum I wouldn't expect anything more than 270whp. Right now 263whp is the record for an N/A max and I believe an Altima has hit 268whp N/A but that is unofficial. 290whp is mad torque steer territory.

IceY2K1

iTrader: (3)

It's non-linear guys....

Bernardd stated 5.12Vdc is the max voltage on typical Nissan MAFs.

http://forums.maxima.org/showpost.ph...0&postcount=13

TILLEYS99

iTrader: (4)

If thats the case it wont handle the power they say. I was hitting 4.95v in 3rd gear @7300

I30tMikeD

iTrader: (8)

For referance I was at around 80% MAF voltage via my SAFC at 260whp. But like Icey said, it is not a linear curve. IIRC, at higher voltage levels the voltage will increase much faster than power will.

IceY2K1

iTrader: (3)

Again, you're using a SAFC, correct?

If you are adding fuel, you are adding voltage.

TILLEYS99

iTrader: (4)

I was only adding maybe 5%

IceY2K1

iTrader: (3)

That doesn't mean it's not 0.5V more or less...does it?

Make it zero and see what the difference is...

TILLEYS99

iTrader: (4)

Still adding 5% is only .25v

IceY2K1

iTrader: (3)

You've measured that?

I highly doubt that's so.

TILLEYS99

iTrader: (4)

the math is pretty simple.

IceY2K1

iTrader: (3)

The MAF voltage vs. RPM is non-linear, ie slope changes....so it's not simply 0.05x5v=0.25v.

Unless you measured it or have the A32 MAF voltage vs. RPM curve and do some math, it's not that simple.