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Old 07-06-2012, 07:23 PM   #1
Trudd84
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Member#: 250706
Join Date: Jun 2010
Chapter/Region: South East
Vehicle:
2004 Impreza WRX
WR Blue

Default Map is under boost, how do I know if I need the higher wastegate map or not?

So I am new to Cobb AP's. I read the manual, had a perfect first experience with it as far as install and such, but I am not hitting the boost I was before. So, before I download the stage 1 93 oct high wastegate map and just go on my way, I wanted to ask first. Car is stock except for a 50/50 bov. I do not have a stock one, so That could be part of the issue. Although it was fine before, because I finally had it dialed in.

Will this fix the problem, of low boost, or am I looking at this all wrong?
I am new to this section, but not cars. Nasioc has always been very helpful and I appreciate your time for looking. Yes, at some point I'll go back to a stock bpv. But for right now, it is the way it is, and I really can't complain about the whoosh. Also, am I noticing a quicker spool or is it my imagination?

Not driving anymore today, girlfriend gut a huge promotion and we are going to celebrate, and taking the civic...so we can take a taxi home. Have a good weekend gents.
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Old 07-07-2012, 08:57 AM   #2
Trudd84
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Join Date: Jun 2010
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2004 Impreza WRX
WR Blue

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Well, I think I have to take back what I said. Lol. I had to run to the bank and some slow moving stuff and got on a back road to head home and let my dog out. 1st gear boost up to .06ish mpa, then a full pull in 2nd wot and it held a maybe .08ish mpa, then wot throttle in 3rd and it maxed at .1 mpa and stayed there without tapering at all. Obviously didn't do 4th.... So this feels right to me, as in comparison where it used to make it to .1 mpa but would then taper down a fair amount.

I know Cobb's maps say target boost is 15 psi, which would be just a hair over .1 mpa's and that it might fluctuate by a psi, which leads me to believe it's spot on. Do you only hit max targett boost in 3rd gear and 4th gear for some reason. come to think of it, I might not have actually had it wot in 2nd. Where, like what gears, should I be expecting my target boost? It pepped the car a serious amount. Can't wait to get to stage two!
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Old 07-07-2012, 09:52 AM   #3
Cobb Tuning
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3rd gear is what you what to look at to gauge whether you are hitting peak boost or not -> you will not generally hit peak boost in lower gears and this is normal. Boost target for different maps can vary so you want to look at the map notes in the maps section at cobbtuning.com to determine what the peak boost should be for your map. If you have a version 2 AccessPORT, your best bet is to get a data log:

Bill
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Old 07-07-2012, 10:18 AM   #4
Trudd84
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Join Date: Jun 2010
Chapter/Region: South East
Vehicle:
2004 Impreza WRX
WR Blue

Default

Thanks Bill. I unfortunately do not have the v2, so I can not data log. It is the stage on map on 93oct which in the notes stated that target boost is 15 psi, or right above .1 mpa's. I hit dead on .1mpa, or 14.5 psi, and it maintains that until I shift, this is in 3rd gear as well. So I am feeling very confident, and satisfied, that it's doing its job quite nicely. : )

Pretty legit product. Cant wait to see what stage 2 is like. Ill jump on the bandwagon and go ahead and say, why didn't Subaru make the map like this initially? Also, is there any data logging that can be down at all with the v1? If I go to have it dyno'd will they be able to data log anything? They do not have an in house tuner.
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Old 07-08-2012, 09:51 AM   #5
Cobb Tuning
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Quote:
Originally Posted by Trudd84 View Post
Thanks Bill. I unfortunately do not have the v2, so I can not data log. It is the stage on map on 93oct which in the notes stated that target boost is 15 psi, or right above .1 mpa's. I hit dead on .1mpa, or 14.5 psi, and it maintains that until I shift, this is in 3rd gear as well. So I am feeling very confident, and satisfied, that it's doing its job quite nicely. : )

Pretty legit product. Cant wait to see what stage 2 is like. Ill jump on the bandwagon and go ahead and say, why didn't Subaru make the map like this initially? Also, is there any data logging that can be down at all with the v1? If I go to have it dyno'd will they be able to data log anything? They do not have an in house tuner.
We do offer a trade-in credit for v1 of $200 when you purchase a v2 AccessPORT through us:
http://www.cobbtuning.com/AccessPort...in-s/70459.htm

That would not only give you the capability to data log, but would also allow you to run the latest maps (02-05 WRX maps had a ground-up revision for v2 recently). In addition, you would also have launch control and all the other features unique to the v2 (0-60/quarter mile performance tests, road dyno, etc.)

If that is not in the budget, then the only way for you to data log would be by using open source tools, such as the RomRaider logger. You would need to get a good serial to usb converter, install the drivers for it, and then you should be able to log with the v1 cable with RomRaider. Or you could just purchase a compatible cable (ones that will work for logging only for RomRaider are pretty cheap).

Bill
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