When you say "set too loose", do you mean loose on the piping or loose as in it opens up too early?

I checked it on the pipe, but didn't mess with the settings on it....

We checked and checked the wiring....the sender is literally hanging right now and not touching anything....the ground wire runs to - on the battery, and the sender goes straisght to the "S" (for sender, obviously), on the back of the guage.

And I will definately call you tomorrow...what time are you available?

Thanks,
IanS

 

The latter... loosen the nut on top then use a hex key to tighten (clockwise) the internal spring... try 720 degrees at first... you should see a rise in peak boost. The BOV should still be 'bleeding' off air at idle or you have it too tight. Don't force the hex adjustment, it should spin with just a little effort after the nut is loosened.

 

Don't see a nut with a bolt on it, but I do see a screw coming straight out of the top..... I turned it 2 or 3 times clockwise. No improvement...still exactly 6 PSI at redline.

Good news is I figured out the FP Guage...works fine now...we tapped the ground wrong...twice....

IanS

 

Congrats on the install!

What was the reason for the MEVI not activating?

 

Did you use a product like Permatex Instant Gasket for the BOV? When I took off my BOV I found this black rubbery thing around the pipe opening. I bought some Permatex and used it when remounting the BOV.

 

Anytime after 10am...

 

Actually, the MEVI (or VIAS, as it should be called), works absolutely fine.

ebmorgan lied to me...

I was pressing the gas on the car from the inside, he said it didn't work. I checked the next day myself from the engine bay, and it's fine.

IanS

 

Well, I Dynoed today

With the MEVI - 267hp
Without - 231hp

I know it should be better, but I'm only getting 6 lbs of boost at redline...

I had their techs check the vacuum system and the BOV settings. They said everything was perfect.

THis is really bugging me, but hey, my car is now the fastest Max in the NW.



I'm leaving any further troubleshooting alone for awhile...I know my A/F is good now, and that's what matters to me most at this point.

Anyone with any suggesstions on the boost, let me know.

IanS

 

Still good numbers Ian, very impressive... Thanks for the ride today, Like a million angry crickets suddenly getting really PO'ed... I can't wait to get boost now... how to do it.. how how....

 

did you get the dyno files on disk? celbrett@excite.com please.

 

You're the man Ian. What does VIAS stand for now?

 

VIAS is "Variable Induction Air System", and is what Nissan literally called the MEVI.

Still trying to figure out why I'm only running 6lbs of boost....this is starting to anger me...

But thanks for the compliments...not perfect yet, but I'm not going to complain about 267hp.

By the way, I don't have the data files yet...he should E-Mail them to me tomorrow.

IanS

 

nice numbers


hope you solve your problem...maybe hit the magic 300

 

i thought stock pulley on the supercharger only hits 6 pounds of boost, sorry to sound dumb, just wondering. which pulley are u running?

 

3.25"

 

i wonder if its becuz now there is more volume to fill with the mevi and what not, there was some 3rd gen in the general maxima forum that has the same problem since he put in his custom front mount intercooler, im thinkin more space to fill is causing less boost, smaller pipes?

 

I thought of that already, and disconnected the MEVI so it doesn't open, effectively making the plenums the stock length.

I did this on the dyno, and without the MEVI I get 231hp. With it on at 5000 RPMs, I get 269.

i also had the thought that maybe the boost was enough pressure to push open the MEVI early, causing problems, so i had soemone watch it while on the Dyno. It didn't open until it was supposed to.

So the MEVI is working the way it should. Also, mardiGrasMax had the SC before his MEVI, and got a +25hp gain with no loss of boost with it as opposed to without it, so there is a precedent.

I tried using sealer around the ambient air temp sensor today and checked the BOV to make sure it wasn't opening early and had a good seal.

The next thing I'm going to try is removing the BOV completely and sealing that spot off to see if there's a difference, but I can hear it when it goes, and it's not going early, so I'm 90% sure that's not it.

Can the belt being too tight cause the pulleys to slow down?

IanS

 

have you checked the seal on the ambient air temp sensor?

 

Yes, I even sealed it with form-a-gasket.

I'm starting to think now the SC was damaged somehow during shipping...It's REALLY loud.

IanS

 

Is it just loud at idle?

If you rev the motor to 2k does it get quieter?

 

Have you checked to be sure the "O" ring at the mass air flow sensor is good? I put sealant their with the "O" ring just to be sure.

 

Check your PM's, MardisGras.