Hi, i just wondering what is the boost of stock MSC? 0.8?

 

I've heard 10-12psi max boost for stock pulley.

 

10.5psi is stock boost at redline.

 

Andy posted this graph here: https://www.northamericanmotoring.co...7&postcount=21

BTW 1 bar is 14.50377psi.

 

OH ok ok, i fitted remux cat back system and i did some modification on air filter by my brother and me. I'm using Apexi air filter and now my car's running 0.8 bar. Is that too much or too low ?

 

0.8 bar = 11.76 PSIg

I'd say you're right on with the factory stated 11.5 PSIg max

 

oh okok.. i see. How about urs, ryephile ?

 

That's right about what mine was stock too. Production tolerances aren't that far off What gauge are you using to read it in Bar?

 

i'm using defi boost meter. how about you ?

 

I use an Auto Meter vacuum/boost gauge. Have the Ultra-lite in the car right now, and the brand-spankin' new Ultra-lite II on the shelf awaiting installation

 

Definitely way too low. You'll need a new reduction pulley to "repair" it It's definitely the best bang-for-buck power mod for the MCS, and a 19% can exceed that boost level at 3000rpm! Highly recommended.

 

whichever pulley you get, u'll be getting 10.5 psi of boost half way through the rev-range or quicker.....and unlike the stock pulley, the rate at which the boost climbs across the entire rev range is faster with a reduction pulley, so it keeps pulling hard all the way to 7000, whereas with the stock pulley, it feels a little asthmatic about 4000

 

I heard some of tuner, they said that 19% is way too much for MCS, is that true? most of them recommend put 15% and do some tuning.

Anyone know where to plug in the oil pressure tap? I coudn't find the tap.

 

I think that you need to go back and read this post:

https://www.northamericanmotoring.co...7&postcount=21

It explains it much better than I can.

 

i saw that graph b4, but then i need to know any disadvantages of putting the 19 % pully ... some ppl say it will stress up our supercharge, is that true ???

 

yeh that's what i mean, see how the pullied cars have a steeper gradient than the stock car's?