Install AP now or wait? - Page 3

DGMSTIenroute · 04-01-2008, 06:34 PM

Quote:

Originally Posted by Digitalfiend

As mentioned above my post, it could technically void your warranty, at least on the engine, but I'm willing to accept that since I've had no problems with my '05 and stage 1/2 (knock on wood) and secondly, my dealership is relatively mod friendly.

Not to suggest being underhanded with a warranty issue, but since the factory settings can be reinstated at any time with the Accessport, isn't a stage 1 flash pretty much between you and your car? Or does the ECU kiss and tell somehow?

SirMattieP · 04-01-2008, 07:06 PM

Quote:

Originally Posted by Digitalfiend

I think the main reason for this post is that I'm trying to reassure myself to go stage 1 without a boost gauge. I swore I'd never do something like that and on my '05 I had all my gauges first. Then again, a friend of mine has been running stage 1 on his car on the track without a boost gauge and his car is still running strong. Time to suck it up and just do it.

I did not know that its dangerous to go stage 1 without a boost gauge. Is it sketchy like that? or just paranoid people?

Oh and with the navigational system, cant you use that as a Boost Gauge aswell???

mboulton · 04-01-2008, 08:18 PM

can't you use the AP as a real-time boost guage? If so, then once you get experience and trust with the new map, you could remove the AP and sleep well at night knowing Perrin did their homework properly.

tro8 · 04-02-2008, 04:24 AM

has anyone added a Boost Gauge to there O8 sti yet? which one did you get and where did you put it...?? I like the look of these... kinda big and in your face, but so is the car..
japanparts.com : PARTS DATABASE

**Digitalfiend** · 04-02-2008, 06:28 AM

Quote:

Originally Posted by SirMattieP

I did not know that its dangerous to go stage 1 without a boost gauge. Is it sketchy like that? or just paranoid people?

Oh and with the navigational system, cant you use that as a Boost Gauge aswell???

I wouldn't say it is inherently dangerous, but I like to know when I'm spiking (not creeping) to 21psi.

Obviously, a boost gauge won't show you if your car is pulling timing due to knock. Still, I tend to err on the side of caution but that's just me.

Quote:

Originally Posted by mboulton

can't you use the AP as a real-time boost guage? If so, then once you get experience and trust with the new map, you could remove the AP and sleep well at night knowing Perrin did their homework properly.

Yes you could, but that gauge only goes up to 18.x psi and our cars can easily spike above that given the tune, parts, conditions, etc. Personally, I'll be datalogging for the first few days of stage 1 as that is infinitely more useful than the AP's "live gauge" reading, which doesn't even have a MAX feature (unless they added that feature recently).

SirMattieP · 04-02-2008, 08:45 AM

Quote:

Originally Posted by Digitalfiend

I wouldn't say it is inherently dangerous, but I like to know when I'm spiking (not creeping) to 21psi.

Obviously, a boost gauge won't show you if your car is pulling timing due to knock. Still, I tend to err on the side of caution but that's just me.

What difference does it make if its spiking to 21 psi... Like how would you be able to change and prevent that from happening? Also shouldnt the map your running keep it at a constant psi that you want to run ex: changing the 3 modes of the 08?

**Digitalfiend** · 04-02-2008, 10:13 AM

Quote:

Originally Posted by SirMattieP

What difference does it make if its spiking to 21 psi... Like how would you be able to change and prevent that from happening? Also shouldnt the map your running keep it at a constant psi that you want to run ex: changing the 3 modes of the 08?

Even if you set a boost target, it is possible for you to overshoot that target, which results in a boost spike and, in extreme cases, can lead to you hitting fuel cut. Overshooting can (obviously) lead to knock as well. It's not a major concern but as I said, I like to monitor things.

SirMattieP · 04-02-2008, 12:31 PM

But what do you do if you do notice those spikes???

**Digitalfiend** · 04-02-2008, 12:37 PM

Quote:

Originally Posted by SirMattieP

But what do you do if you do notice those spikes???

Get the car Protuned (or do it yourself once the software is available).

**Digitalfiend** · 04-02-2008, 04:17 PM

Quote:

Originally Posted by SirMattieP

But what do you do if you do notice those spikes???

The other option is to use a different restrictor pill:
How Subaru’s Factory Boost Control System Works - COBB Forums

04-01-2008, 08:18 PM	#33
mboulton Amateur STI Driver Car: Gray 2008 STI Fav Mod: Coming Soon Posts: 8 Join Date: Mar 2008 Trader Rating: (0)	Re: Install AP now or wait? can't you use the AP as a real-time boost guage? If so, then once you get experience and trust with the new map, you could remove the AP and sleep well at night knowing Perrin did their homework properly.

04-02-2008, 04:24 AM	#34
tro8 Junior STI Driver Car: 2008 DGM STI Fav Mod: protune by chris at XX Location: Rhode Island Posts: 145 Join Date: Apr 2008 Trader Rating: (0)	Re: Install AP now or wait? has anyone added a Boost Gauge to there O8 sti yet? which one did you get and where did you put it...?? I like the look of these... kinda big and in your face, but so is the car.. japanparts.com : PARTS DATABASE

04-02-2008, 12:31 PM	#38
SirMattieP Professional STI Racer Car: DGM 2008 STI Fav Mod: Advan RZ DGM 18X9" +45 Location: So-Cal Posts: 677 Join Date: Mar 2008 Trader Rating: (0)	Re: Install AP now or wait? But what do you do if you do notice those spikes???