Spoiler alert: no quantitative results.

This thread will serve more as a how to.

Backup: How to get a Q45 MAF to work on a 4th gen.

Parts:
90-96 Q45 MAF (ebay)
1' long 4" Dia aluminum pipe (Amazon)
4" velocity stack (BPI)
4" to 4" silicone coupler (ebay)
4" to 3.5" silicone coupler (ebay)
Silicone port system for IAC
Stainless hose clamps
AMSOIL filter

Tools/Consumables:
Band saw or Dremel
JB Weld KwikWeld
120 grit or lower sandpaper
Painter's tape
Drill/press and stepped bit

The process was:
-chopped up a Q45 MAF with a band saw (you could use another MAF).
-grinded the outer edges of the MAF base to open up the radius
-drilled a hole big enough for the MAF in a 1' long 4" Dia aluminum pipe
-scored outline of MAF body onto the pipe
-sanded the inside radius of the MAF base and aluminum pipe within the scoring with 180 grit sandpaper
-taped off scored/sanded area on the pipe
-mixed up JB Weld KwikWeld, applied to to the MAF and mated it to the pipe
-cleaned up the edges of excess epoxy
-removed tape

Tuning (E Manage):
With 380cc injectors @ 40 psi the MAF needed to be scaled up 50% to get the fuel trims in an acceptable range. Previously with the Q45 MAF I had it scaled up 20%. The first injector table's first few columns from 500-3000 RPM needed to bumped up and tapered off to zero with increasing RPM.

The initial impression is good. The midrange and upper RPMs pull harder and throttle response was increased. I only have a rough tune so I've yet to see how it pulls past stock redline. I'm waiting on an axle before I really get into it.








I actually had to clock the intake so the MAF body was pointing at the master cylinder. It hit the hood otherwise. Don't mind the dirty bay.. this is my daily.

 

Nice work, looks a LOT easier using a Q45 or Z32 sensor rather than an A32 due to all the plastic surrounding the A32 sensor.

 

Since the TB is the limiting reagent, is there really any gains to be had going from 3.5" to 4"?

Nice work and execution.

 

Here's what it can do on a full 5.7 swap compared to a 3.5" intake. I'm not expecting my results to be as much but I don't see why it couldn't be maybe two thirds of this.

(surratt)

 

Also for us broke ***** or cheap ***** that don't want to pony up for a Haltech, it really helps bring back timing when combining this with 440's or 550's.

I lost quite a bit of timing when I went from a 3" to a 3.5" with only 335's. Only way to get it back without spending a small fortune was to go with larger injectors, and while I was there, I thought why not go with a larger intake. There was some info about it (4" intake) in the terrible SSSIM thread in here as well as on the Altima forums. In any case, 440's and a 4" intake work well with minimal tuning software (SAFCII+WB w/gauge for peace of mind). No dyno proof yet even from me.


Semi irrelevant for this thread since this is on the 02-08, but good info. https://maxima.org/forums/all-motor/...2-08-vq35.html

 

sub'd

 

Nicely done intake w/the 4th gen MAF.

Are you using the e-Blue or Ultimate?

 

I wish my DD was this cool.

 

Thanks. It's a Q45 MAF but would look pretty much the same with a 4th gen MAF.

I'm using Ultimate.

@NmexMAX, Thanks man.

 

You can also use the 5th gen am600 maf with the cgr 4". Wiring isn't really that bad.

 

Are you using the Q45 airflow map and tuning from there?

 

Nah, I just scaled the MAF in/out +50% in EMU to get the fuel trims in check. It's pretty close but will need more tuning when it's a little warmer.

 

Nice. My tuning knowledge sucks. I really want to put my 80mm. Was going to use the Z32 map hoping it will run to get to a dyno. Perhaps I can just bump MAF in/out and see if I can get it to run not so dangerously lean.

 

Who do you use to tune? I have to tune my gen 5.5 this summer...

Thanks

 

So this is a 7th Gen long block in a 4th gen, with 4th gen timing cover assy etc...?

 

07+ Alti block/heads/cams/lower intake (same as 7th gen sans EVT)
09+ Max Upper intake and TB
95-01 Max Timing covers/components/upper and lower oil pans

https://maxima.org/forums/all-motor/...-0-timing.html

 

A true Frankenstien motor....

 

Funny thing is, the 3.0 inner timing cover lines up with the HR head castings. No hogging out the top bolt hole like hybrid DE swaps.