mpi super charger stage 1 or 2?

[Rockwell5]

Hey guy I got a few ?
I recently bought an 06 apex gt with mpi supercharger on it...ive replaced the gems contoler with pcv and auto tune
My ? Is how do u tell if it is a stage 1or2 charger..I was told by owner it was stage 2..but if u knew him u would know why I was wondering hiw to tell diff..the engine is stock as far as I know with 8500 miles on it..all with charger on it..anything should be worrying about with that milage with it being boosted..and charger gearing??..I talked with allen ulmer he told me 5-7 psi with stock engine and guage shows 10 ..I counted pulleys and im running 22 bottom and 26 top..im at sea level and allen tells me that is 5-7 and that my guage must be bad I realize I could get new guage and see but wondering if anyone is running same set up and u are seeing the lower proper numbers for that set up?
And last I want to put intake out thru hood and want to order a k&n filter to do so but im not hone to measure filter to see what size flange it is so thought someone could help me out with that so I can get something comming in the mail..
Thanks for any help

 

[Riceburner]

I was running a MPI Stage 1 with 22/26 on my RX 1 and it was 5.5 to 7 lbs.

My old Apex GT now has a MPI Stage 1 with 23/27 I think and it is 6 lbs.

Both are running in your neck of the woods.

I'm guessing you have a Stage 1. Makes no sense to have a Stage 2 to run 6 lbs.

Now if you were running 26/22 on a Stage 1 you would be making over 10 lbs at sea level. That would require race gas in a stock motor or a head shim or low comp pistons.

Allen know his stuff.

8,500 miles nothing to worry about on a low boost Apex. The 2006 has 10,000 & works like a charm.

BTW, you will become addicted. Trust me, 5 lbs is only the beginning. Welcome to the club.

 

[Agman 57]

X2 in being Addicted. Once you run with Boost, you will never want to run without it! Get ready to have sore cheeks from smiling from ear to ear! Enjoy.

 

[Rockwell5]

Sounds great thanks for the replys..
Another ? We just had 6"of snow and I took er out on the lawn to see how it run and one thing I noticed a fluttering noise when letting off throttle. . and also when just giving enough fuel to enguage clutch like while pulling in a shop slow I understand it is dumping its boost when letting off throttle but should it be doing it when u barely on the throttle?..its all new to me havng charged sled ..so this normal ?..or something I need to adress before the time comes when we full out sledding..thsnks for any help

 

[Agman 57]

when letting off the throttle quickly, you will release boost through the blow off valve. So that part sounds normal, as for just pulling in the shop?? I would not think you have that much boost , that the BOV would be dumping air. Do both times the flutter sound about the same? The mod. air box may be making it sound different? I don't know, I have never been around one that has had that done to it.

 

[kinger]

Yes I get that sound when doing slow pulling in type manuevers. The system makes boost at engagement. I love the sounds when when pulling up to the pumps at the trail, I usually give a little couple flips to let everyone know I'm rocking a blower haha

 

[sheetwright]

It even doesn't more if you have a good bov. My new one sounds like a chopper coming in. Nothing sounds sweeter imo