Richard Holdener Tests a 3800

[Streetbu]

The computer isn't the only thing lacking bandwidth in this scenario. I am starting to think I need to open a school. 😉

 

[64nailhead]

This is why i wanted to put in a MAF sensor. All the data!

I’ve never seen the purpose of a MAF sensor, especially in this scenario. The air flow can be calculated from the VE, and leaks make the MAF completely useless. I’m sure his junkyard setups leak like a sieve everywhere, or I’ll guess.

Regarding Mike’s thoughts, it irks me that he never pushes anything to the limit. Or at least to the edge. His S475 testing in built 4.8 short block p’d me off. Always stop at 15-18psi - why?????? Especially during the cam test.

I have to say though that I enjoy most of his crap, it sure as hell beats watching Big Brother, The Voice or the need according to a journalist lol.

 

[64nailhead]

Forgot to mention, the compound deal is super cool, but can get away from you quick without a well designed system. The boost build isn’t linear.

 

[Northernregal]

I’ve never seen the purpose of a MAF sensor, especially in this scenario. The air flow can be calculated from the VE, and leaks make the MAF completely useless. I’m sure his junkyard setups leak like a sieve everywhere, or I’ll guess.

Regarding Mike’s thoughts, it irks me that he never pushes anything to the limit. Or at least to the edge. His S475 testing in built 4.8 short block p’d me off. Always stop at 15-18psi - why?????? Especially during the cam test.

I have to say though that I enjoy most of his crap, it sure as hell beats watching Big Brother, The Voice or the need according to a journalist lol.

Calibrated Mass air would make fuel tuning way more accurate in SD and you would have real time horsepower and efficiency numbers when you made a change like a cam or heads.

I will eventually have one on the cutlass, just need to figure out how I want to make it happen.

 

[motorheadmike]

Calibrated Mass air would make fuel tuning way more accurate in SD and you would have real time horsepower and efficiency numbers when you made a change like a cam or heads.

I will eventually have one on the cutlass, just need to figure out how I want to make it happen.

The challenge is always calibrating the MAF to the capacity of the combination. Tube diameter is an interesting variable, as is accuracy relative to turbulence across the sensor. Good times.

 

[Northernregal]

The challenge is always calibrating the MAF to the capacity of the combination. Tube diameter is an interesting variable, as is accuracy relative to turbulence across the sensor. Good times.

This in a 3.5" post intercooler pipe.

PMAS HPX-GM Mass Airflow Sensor 03 & up GM Ext. Range

PMAS HPX-GM Extended Range Mass Air Flow Sensor 03 & up GM vehicles that utilize a slot style MAF sensor

performancemrp.com

This before It about 6" away.

3.5 Mass Air Flow Straightener Honeycomb Screen | Performance MRP

Performance MRP screens are the best solution for stabilizing air flow for any MAF sensor. Improve MAF readings, throttle response, and idle. Made in the USA.

performancemrp.com

Insight? I've never messed with MAF so I don't know.

The wiring and software is relatively simple, the flow issues and calibrating in pressured flow is not.

 

[bs009]

Regarding Mike’s thoughts, it irks me that he never pushes anything to the limit. Or at least to the edge. His S475 testing in built 4.8 short block p’d me off. Always stop at 15-18psi - why?????? Especially during the cam test.

What I'm sure he's planning on doing here is pushing the motors to the limit with what he calls a "big bang test" and I'm sure he's taking things relatively easy right now to test out a few different things before trying to break the motor.

He did end up pushing his 4.8 engine up over 27 psi before they had an ignition issue that they didn't have time to fix.

Stock GM LS Engine - Big Bang Theory - Hot Rod Magazine

Stock GM LS Engine - Take the Stock GM LS Engine. We are trying to learn everything about it's limits and we will tell you the results. - Hot Rod Magazine

www.motortrend.com

edit:
also this video shows a few others he's pushed to their limits:

I'm imagining he's running in speed density, but if he's tuning off the MAF I'm sure the junkyard motor is sealing just fine in the areas where it matters since it was pulled from a wrecked car. valve cover gaskets like to leak on these though.

 

[Northernregal]

What I'm sure he's planning on doing here is pushing the motors to the limit with what he calls a "big bang test" and I'm sure he's taking things relatively easy right now to test out a few different things before trying to break the motor.

He did end up pushing his 4.8 engine up over 27 psi before they had an ignition issue that they didn't have time to fix.

Stock GM LS Engine - Big Bang Theory - Hot Rod Magazine

Stock GM LS Engine - Take the Stock GM LS Engine. We are trying to learn everything about it's limits and we will tell you the results. - Hot Rod Magazine

www.motortrend.com

edit:
also this video shows a few others he's pushed to their limits:

I'm imagining he's running in speed density, but if he's tuning off the MAF I'm sure the junkyard motor is sealing just fine in the areas where it matters since it was pulled from a wrecked car. valve cover gaskets like to leak on these though.

Nobody tunes off MAF, just Mike because he's a Mas*chist.

 

[64nailhead]

Nobody tunes off MAF, just Mike because he's a Mas*chist.

MAFochist

 

[bs009]

Nobody tunes off MAF, just Mike because he's a Mas*chist.

Unfortunately the only way to tune a 3800 with the factory pcm is to use MAF tuning. The VE tables only go up to 140 kPa on those PCMs.
It hasn't been too difficult for me so far so I'm excited to see if speed density is a lot easier once I switch over to the Holley. I've heard a lot of good things about speed density