02blackbeauty19

iTrader: (22)

Im running the APS kit on my 2002 corvette.

My low boost setting is programed for 9 psi and it reaches that no problem. When I switch it to high boost, which is supposed to be 14psi, it only reaches 10 psi.

I was scrolling through the options yesterday and noticed that the high boost is set on 45% , and Im guessing its 45% of the wastegate springs????

What Im trying to do is get it back up to 14 psi where it was tuned at. Is it as simple as turning the % up until my desired boost is reached on a hard run?

stevieturbo

It is just 45% bleed of the air passing through the control circuit. So in some respects a random number as there are other variables.

And yes, it is s simple as increasing this.

02blackbeauty19

iTrader: (22)

Is there a certain increment in % I should increase it at so I dont over-boost it or take all day testing it LOL

stevieturbo

Trial and error. And its not as if its difficult. It should only take a minute or two.

02blackbeauty19

iTrader: (22)

Ok, thanks a lot man. Ill probably go out during half-time of the Saints game and get her dialed in. Ill report back

turningfast

to prevent to much boost set the max to 14 psi. (if it's a spec b it has this feature), then like stated increase the percent.

nuclearxp

if this is for the profec bspec II sent me an email this evening at cscharlt[at] gmail dot com and I'll see if I can find a great guide i found.

02blackbeauty19

iTrader: (22)

Hey guys, I still havent got around to messing with it yet, but I plan on it soon.

02blackbeauty19

iTrader: (22)

Well, the current high boost setting was programed on 45%. I turned it up to 55% and made a quick pull and it still didnt reach over 10.x psi.

stevieturbo

then turn it higher

02blackbeauty19

iTrader: (22)

Im scared Im gonna blow my **** up hahah

stevieturbo

how will it blow up if the boost hasnt changed ?

If you arent sure, then get your tuner to do it.

Johnv

Just set the overboost warning maybe 1psi above your desired boost (15) and set it to pull 20-25 % from the duty cycle if it overboosts.

Then just keep increasing the duty cycle until desired boost is reached. If its not increasing check your hoses to solanoid are in good condition, no splits or haven't blown off.