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Not sure about that but maybe the gauge is slightly off. Can try a cheap mechanical gauge and see what you get. Not unheard of for an electrical boost gauge to be off a psi or 2. I know i am not seeing 8-9psi until 7500 with the 4.25 but you should be seeing that at 7000 with the 4.00

Just go with the regular pro flow bypass valve that they include with their kits with the filter on it. Will reduce that street sweeper sound substantially.

First one is standard valve. Second one is the one you have. Huge difference in sound.

The bypass valve will not close until you are into boost. If you are at 4000 rpm just cruising, the blower is spinning and the air has to go somewhere. Once you get into boost the valve closes.

Once you have an "open" bypass valve its gonna sound like a street sweeper.

It looks like you have the pro flow bullet valve "open" which is louder than the standard one. The standard one that come with the kits is the regular pro flow valve with an air filter on it. https://store.procharger.com/WebDirect/Products/Category?categoryId=11

I went for the mechanical boost gauge. Comes with very thin tubing as you can see in my previous pics. Was going to change it to better tubing at some point but it works perfectly.

Clearish hose on bottom goes to boost gauge, black tubing on top goes to surge valve.

I just put a small zip tie on those.

How much poost were you running?

You have to cut it lengthwise.

I just sliced the hose and it came right off.

Remove the hose completely, then slide 5/8 hose onto connector. Dont reuse any part of the hard plastic hose.

I just sliced the hard plastic hose a little and slid it off the PCV elbow.

Yes, i used the 90° tube that came with the kit to attach to the Boss IM. Not sure if its different from tube for stock IM. When i ordered the kit i told thwm i had the Boss IM.

I used a dremel on the lower shield and cut out two openings for the lowest tubes. Fits perfect.

I meant for the PCV on the drivers side.

I did not like that 90° hose that they gave with the kit. I know its being anal but i hated how cheap that looked. I used the factory 90° connector and routed it to the Bobs oil separator.

Pics from when i did my install. free image hosting image hosting 30 mb

Yeah, i am one of those guys, if there are any of us, that love the look of the track pack wheels. Unfortunately i cannot run a wide enough tire unless I have be them widened which i have thought of. Going with a velgen setup with a 305 tire at some point soon. As far as the gearing, I would...

Car runs phenomenal and is well balanced. Lunds tune is spot on. Stay under 3500rpm and it drives dead stock pretty much. After that its a whole other animal compared to when it was NA. I am still on the track pack wheels with P Zeros, LOL. Will spin in third easily. A lot of fun but also losing...

Yeah, you should be about 10-11psi. I believe its 1psi for each .125" pulley size increase or decrease.

Running the 4.25 on mine. Around 8-9psi..