can get tune without aftermarket things like AP and turbo xs? now i feel like a newb.
Yes, all the AP does is reflash the map on the stock ECU. The factory ECU still does everything. A custom map can be put on the AP if it uses it's special format or you can just use an open source program to put a map on from a laptop. Basically, you use the laptop as the AP. You don't take it with you, most tuners will hold onto their maps. However, it's on your ECU for good (unless of course you flash something else on it).
Are you sure you are making 70hp with an intake and a tune?... and 10-15 more hp? That tune isn't that aggresive either..
When XPT dynoed with the first stage 1 map they got 218hp at the wheel with the stock airbox and a drop in k&n. If we compensate for 25% drivetrain loss we get 290hp at the crank. Since the first stage 1 map I've worked with Braden on a boost loss at low temps, and he gave the new map another pound of boost, putting target boost at 15lbs. That's a little over 3lbs more then stock (11.5 or so) Subaru claimed 60hp just on SPT intake and exhaust. I basically started tuning with the CAI I built installed. While I still have a few tweaks to make to WG duty cycles etc. the map is nearly custom made because I was logging data for the map revisions.
Also SCC magazine did a CAI and exhaust and dynoed a 51HP increase, with a whp of 224 without tuning. (roughly 299 crank hp with a 25% loss) I guess the stock numbers are a little under real numbers. SCC got 182 at the wheels all stock.
That all being said, I have no access to a AWD dyno, so it's all guess work. LOL My friends iphone with a dyno program shows a decent increase, but it's all reliant on my launching skills.
When XPT dynoed with the first stage 1 map they got 218hp at the wheel with the stock airbox and a drop in k&n. If we compensate for 25% drivetrain loss we get 290hp at the crank. Since the first stage 1 map I've worked with Braden on a boost loss at low temps, and he gave the new map another pound of boost, putting target boost at 15lbs. That's a little over 3lbs more then stock (11.5 or so) Subaru claimed 60hp just on SPT intake and exhaust. I basically started tuning with the CAI I built installed. While I still have a few tweaks to make to WG duty cycles etc. the map is nearly custom made because I was logging data for the map revisions.
Also SCC magazine did a CAI and exhaust and dynoed a 51HP increase, with a whp of 224 without tuning. (roughly 299 crank hp with a 25% loss) I guess the stock numbers are a little under real numbers. SCC got 182 at the wheels all stock.
That all being said, I have no access to a AWD dyno, so it's all guess work. LOL My friends iphone with a dyno program shows a decent increase, but it's all reliant on my launching skills.
Three questions for you,
1) what does XPT stand for?
2) how much did it cost you to get your car tuned and how long is the process?
3) how did you find the tuning shop?
I bought a 2008 WRX sedan and want to start modding it to make it equal if not surpass the new 2009's. I thought about trading the car back in for the new one but didnt seem logical. I did pick up the SPT exhaust from SubaruGenuineParts.com || Where Genuine is Better! when it was on sale for $305 + $100something for shipping. I havent installed it yet, just wanted to do it with the intake which i havent decided on yet. Was also thinking about getting a downpipe for the power but then again i dont want to lose the warranty.
Thanks for your answers and $0.02.
Blackres13 answered most of your questions. With the STP exhaust and intake installed, you'll be about the same as the 2009 power wise. If you run a XPT stage 1 map, you'd be better. I went opensource for all my turning, and am very happy with the results with a generic map. I learned as much as I could, and began tuning on my own, but mostly for smoothing things out. When XPT gets the stage 2 released, then I'll look at further upgrade tuning.
Just to give you guys a heads up , I recently installed invidia down pipe and spt cat back exhaust , and AEM wide band welded bung before the cat . Before I loaded a stage two map , I took the car for a ride to see what the wideband a/f ratio would be at wot with the AEM intake installed, and low and behold the intake would go perfectly rich 10.6-11.5 and then at about 4500rpm's it would lean out to about 14.7 all of a sudden ,and then just go to 17+ , I would not recommend running the intake without a custom tune , I no longer have it installed on my wrx .
XPT did some base maps for it, and it offered little to no gains. That being said, I feel a large difference over the stock box with a paper filter. Odds are a K&N in the stock box would yield similar results.
The thing I like about mine is, I have a non-premium model, so the foglight hole acts as a cold air source for the fenderwell.
ive logged with and without this intake. it "allows" more air about mid rpm (braden can back this up). does not require tuning when used alone, but benefits from it. if you improve your turbo flow, (this little one is running out of breath) DP maybe, you will likely see more flow from 4.5k up i think with this over the stock intake. Braden from XPT is tuning his stage 1 and stage 2 maps for both the stock intake with aftermarket filter and AEM CAI. Advantages are there with the AEM.
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