On a stock 2004 Monte SS supercharged i'm only seeing 5psi-6psi max. How much boost do you guys
show on a totally stock SS? Is my boost too low?? I had a '99 Regal GS that showed 8psi to 8.5psi. It was
owned by a 60 year old woman so i assume it was stock.

Thx Dennis

 

My stock was 5.5 average. It did fluctuate quite a bit tho.. Sometimes I would see up to 7 or so in the winter.

 

I don't see anymore than 5 psi. I need to scan my PCM to see if i'm getting any knock. If not i might add a 3.5 pulley and see how much boost i get.
I can't wait for the day i switch to a turbo kit with 14 psi.

 

Well i just scanned my car using AutoTap. I only saw .4 degree of KR at WOT. And no KR at part throttle. Does anyone know how
i can see what my max boost is while using AutoTap? I don't see an option for boost in AutoTap. It sure looks like it's safe to run a 3.5 pulley since i'm
barely showing any KR.

 

Imo, I would eliminate the KR before dropping sizes.. You may drop sizes which will most likely raise knock, reducing power. Youll be left with less power than before you started..

Idk maybe Im wrong. It seems in my car at least, the smallest amount of KR KILLS power..

However with that small of an amount of knock, youll probably be "safe" at least if you wanted to try a smaller pulley then deal with KR after the fact. Better flow, cooler intake temps, higher octane..

 

The MAP sensor is what reads the manifold pressure.

 

I only saw a quick flash of KR at 4,000 rpm. I only saw it once and it wouldn't repeat. My long term plans are to add a ZZP Z3 kit, but i want to make a little more power now. So i might add the u-bend delete pipe, CAI and maybe a 3.5 pulley with ZZP tune.

 

Could have just been false knock then.. I get that sometimes.

U bend delete is always a good idea. Other plans sound good.. I see you dont mention headers, good. I dont think until youre making 10+ psi youre gonna benefit from them. With all the crap I have done, headers still dont help me. I actually have lost power from them but they look too good to go back to stock manifolds. I see up to 12psi at times.

 

I guess it was false knock. Also it was 93 degrees with 75% humidity yesterday. I also noticed the little KR i saw was during upshift. But i couldn't get it to repeat. I guess the PCM relearned it out. Who knows...lol.

 

Agree - and TBH itd be money down the drain anyways with the Z3 plans in the future. Youd have to go back to stock manifolds for the turbo kit to bolt up, and resale on mods is pretty abysmal on this platform nowadays.