![]() |
AP Map
Ive had an AP for about 3 weeks now and the only map that works for my car is the 91oct Stage 2 v130. Every other map that I tried makes the car run like crap. My mods are a catless TBE, drop in K&N and an hks ssqv. Have any of you been using a better map for this setup?
|
Make sure you are using a Cobb-supplied map that is meant for a catless TBE and stock intake. If you have any that didn't come from Cobb, toss 'em. The exception would come from any custom tunes you had, but of course if you had one you wouldn't be having issues. ;)
|
That sounds like the correct map. If you read the readme file for it, it should say exactly what the requirements are for that map.
If I recall correctly, stage 2 is TBE. However being catless may have even less than expected back pressure. I would suggest you do whatever you plan if anything for the intake, and then get a custom tune. You might also consider putting back on the stock BOV as I believe the HKS is a vent to atmosphere which is not ideal for Subaarus. |
Quote:
And he could have a protune and still have issues! Stick to the nonturbo advice ;) |
Quote:
Actually the person I bought the Cobb AP from had a bunch of STX, chronos, and PDX maps on it. Some were made for 92 octane. ;) |
Quote:
|
Quote:
|
Quote:
|
Used or not, you can get non-Cobb maps for them. But no worries, I don't have to go to the moon to know it isn't made of cheese. ;)
|
Speaking of which there is a picture of the AP on the COBB sight!
http://cobbtuning.com/categories/?id=2208 |
Quote:
|
The only reason I tried the other maps is because the guy I bought it from had the same setup as me, the difference was the 92 octane. which I guess I can get in town here at the gas station on longley and colbert if I become a member.
|
Does anyone in town here have a TBE catless map they could send me?
|
I ran Cobb's Stage 2 91 Cali map on my catless Stage 2 with an HKS SSQV on my car for a year and a half. It ran like a champ the whole time. You can download that one off the cobb website. Maybe it's the intake thats throwing it out of wack.
|
Quote:
|
Quote:
|
Eric, any ProTune map for the right ECU can be downloaded to the AP and then flashed to the car. That is how a custom tune gets there. And people are sharing their ProTune maps on different web sites.
That said, I would not use anything other than the Cobb maps which are very conservatively mapped, or one built for my configuration. Anything from other sources is a crap shoot that might cost you an engine. No thanks. And it sounds like the COBB 91 Octane stage 2 map is working fine, so why are you looking for another map? Without a custom tune, I wouldn't push it past that map, and as I said, that map may even be a problem without a cat. But hey, at least it works. |
Quote:
|
Quote:
|
Quote:
|
I agree with Kevin and Dean. Stick with the Canned CA91 stage 2 map from Cobb, or better yet, get Protuned.
I'd never heard that an upgraded fuel pump is a viable power mod for a stage 2 WRX (stock turbo). Would you want to get re-tuned for it? |
Dean and Kevin got it right. I read your post a little to early in the morning. I'm of to go get a fuel pump!
|
Quote:
|
Interesting.
|
Remember, the max flow rate for an injector depends on several variables- max duty cycle, gamma on time, and fuel pressure. Injectors are like the spray nozzle on a garden hose. Max flow is determined by how fast you can squeeze it off and on, how big the hole is, and how much water pressure you have. If the faucet is only turned on halfway, you get less flow than if it's all the way on, even though you are opening the same nozzle with the same frequency and duration.
Stock fuel pump = faucet half open. |
Everyone knows Ecutek is better anyway. Such features as No Tuners anywhere, no map switching and little or no customer support. Woohoo.. :lol:
Also, I would agree that adding a bigger pump doesn't require a retune, but it enables you to go further with a future tune, with increased perameters.etc. |
lol
|
Quote:
I can get away with it, I described my current situation with ET. :lol: |
Doesn't Mike @ Gruppe-S still tune ECUTek?
|
Quote:
You only need a bigger fuel pump when your injectors are able to draw more fuel than the pump can provide, which in turn means a drop off of pressure at the rail below what the FPR is attempting to regulate to. |
Pressure != flow. People replace fuel pumps because, at peak boost, fuel flow volume can drop off at high duty cycles and peak fuel pressure. Hence STi owners always being encouraged to replace their fuel pumps feeding their stock ~550cc/min injectors, whereas WRX owners do okay with stock pumps feeding their stock ~420 cc/min injectors.
|
Quote:
I don't see how a larger pump on a stock car can change anything except how much fuel is cycled past the rails and back into the gas tank. Apparently a stock STi that's tuned for more boost, and running its injectors at much higher rates to compensate, can run out of pressure in the rails. Since the stock mapping never runs the injectors at 100% DC, it's not a problem on a stock car. But if you're getting up there in DC, then you can run into the need for a bigger pump on an otherwise "stock" STi. i.e. the stock STi injectors are too big for the stock fuel pump if you tune it beyond stock power levels. |
Quote:
Also, the other factor in how much flow an injector is capable of is the size of the nozzle. The only difference between WRX "blues" and STi "pinks" is the size and number of holes in the injector nozzle. The plastic and the solenoid are the same. |
Where's that "the more you know" graphic Matt posted not to long ago? :)
|
:~: So...fuel pumps...
you obviously dont shampoo... http://i3.photobucket.com/albums/y62...spaceghost.gif |
Danish!
|
Quote:
|
Eric, I was not busting your chops, I know you have had an AP, and street tuner on two cars now, but you appeared to be confused how they could be using other tuner's maps... Sorry if I misunderstood your question...
Quote:
|
Quote:
|
|
woah... :lol:
|
That's pretty funny. :lol:
|
The new AP at rallysport!
http://www.rallysportdirect.com/shop...bo-p-2857.html |
All times are GMT -8. The time now is 12:16 PM. |
Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
All Content Copyright Subaru Enthusiasts Car Club of the Sierras unless otherwise noted.