i just installed the full alta set up , boost tubes ,big intercooler,air intake no exaust yet but its coming on friday, now how musch boost you guys get, i see only 10 to 11 psi is that correct? even with sport mode ingage if thats make differance,i just want to make sure that there is no leaks thanks guys

 

i have there cold air intake and a custom exhaust but i still have both my cats mine is a 09 build month is september i think and i peak out at 15

 

i peak @ 15

 

Hit 21 psi last night

 

lol i see 12 w just...well....nothing

 

Don't forget to mention that you are running the ALTA PnP ECU set up. Most folks will not get near 21 PSI...

I so far have seen a peak of 15.1 PSI with the JCW Stage One tuning kit.

 

well i only see 11psi max no ecu upgrade

 

You won't see any more boost. The computer just won't let you. Without a tune, you will NOT see the full effects of your modifications. The ECU cuts timing and other things...

In fact, at least with my automatic, it is extremely obvious in first gear. I will have terrific acceleration until about 5000rpm and then the car just seems to slow tremendously, and you can hear the blow-off activate early.... ugh... we need tuning!

You can see the effects on ALTA's website, under the boost tubes.

 

so how much boost do you see?

 

You should also be sure to turn off the traction controle, that will make sure you are making the most boost you can.

 

ok guys that doesnt tell me how mush boost you guy s are running without any software

 

i can hit 15psi with no tune

 

i have no tune and i got 15

 

Without the pnp ECU, I was getting 15 PSI

 

what years are your minis? mine is an 09 and 11 psi, i guess they make less power then that the early ones

 

mine is 09

 

Keep in mind if you are reading a boost gauge it is not a calibrated device so accuracy is not there.

 

so now what is that overboost you guys are talking about?

 

Scangauge reports about 26psi, and I'm at sea level = 12 +- psi. Stock ECU.

 

Does anyone out there have an 08' with a stock tune? If so what are you seeing?

 

Scangauge reports about 26psi, and I'm at sea level = 12 +- psi. Stock ECU.


Do you mean +-14.7 psi at sea level?

 

Subtract about 14.7 PSIg at sea level.

 

15... w/JCW on a 04

 

what rpm do you guys see full boost ? im getting 11 12 psi not before 3600rpm

 

That is exactly what I meant... I said I'm getting 26psi which is equal to about plus or minus 12psi, since it is impossible almost to be directly at sea level, unless I'm driving on the beach.

26 - 14.7 = 11.3 plus or minus. This is just a scangauge... I work with what I got!