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Old 08-04-2017, 04:22 PM   #26
wrxey
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Quote:
Originally Posted by Dubyarx13 View Post
With the orig tune u get torque off the line, but have to put up with a "stepped" power delivery and power that tapers off a little early. I am fine with this. It was quite a shock going to the reflash, which smooths things out. I like the rough edges, this is a rally car for the road--the reflash makes it feel like a Honda motor. Also, I though Cobb's "Stage 0" would restore the old tune. It does not, so they lied to me. It feels identical to the dealership one, and frankly like the Stage 1 too. I feel I have no recourse.
So this is the COBB tune...
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Old 08-04-2017, 04:27 PM   #27
pentavelant
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I have the stage 1 tune on my wrx(MAPerformance) and it feels nothing like the stock tune, the Cobb stage 1 doesn't either for that matter. Maybe you should take it back and have then run some test on it. Good be something wrong with the reflash. I had to take my son's 2015 back twice when they"updated" the ecu
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Old 08-04-2017, 04:27 PM   #28
MaddMax
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Originally Posted by wrxey View Post
When doing hard acceleration and shifting 1 to 2, I am almost always greeted with a significant engine bog when I shift into second. It's not a bucking. It's a straight up bog. Maybe the system is shocked and the CPU signals the engine to hold back - I have no idea, but that's what it feels like.
My 2012 WRX did this, stock and tuned. I believe the issue is an over-reactive traction control and stability control system. Whenever I disabled the systems and did the same run, the bog wasn't there. There's still momentary lag, but the big bog was gone. I found it rather odd because I couldn't detect any spin with or without the nannies, but with the nannies watching, they were apparently preemptive. In the ultra nanny driving modes, my M235 6MT will do almost the same thing. The nannies in the M235 are wildly preemptive unless you select a mode that allows for some spin or full spin.
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Old 07-14-2018, 08:54 AM   #29
Nicksauser
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Default 2018 wrx bogging

I had a 2013 wrx that never reacted as bad as the 2018 version. I actually had my car bog so bad at WOT I almost hit my head on the steering wheel. Dealership could not replicate the issue. They sent data to Subaru and evaluated another car that bogged just not as much. They said Subaru came back and reported that this was the normal reaction. I said this is not normal but a characteristic of a poor design or software issue. The more people complain the more likely they will update the stock tune.
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Originally Posted by jschweg View Post
There is a pretty horrible dead spot with the factory tune right around 3.5 or 4k that lasts about a second when accelerating hard. You might be hitting it when you shift into 2nd and get back on the throttle. My 17 is my first Subaru and am astounded by how bad the power delivery is.
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Old 07-14-2018, 10:15 AM   #30
Straight6
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It is nothing short of incredible what a good e tune will do this car. Stock tuning is really wacky in this car.
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Old 07-14-2018, 10:32 AM   #31
Perscitus
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That plus OP and many expect too much from these econoboxes. Need to take them all with a big grain of salt.

Subaru engines, Hitachi control managment programmed by yet another company (OE tune is third party outsourced) with semi-accurte inputs from a multitude of third party provided sensors... its just BAU for a mass produced appliance. The more recent MY they are, the worse and increasingly overcomplicated... bean-counter magic touch.

Btw, 2018 just got new ECU and TCU reflashes this month, have them apply whats applicable, do a full TPS, idle stability and AVCS OCV/OSV relearn and take it from there.

Last edited by Perscitus; 07-14-2018 at 12:25 PM.
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Old 07-14-2018, 01:04 PM   #32
jschweg
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Originally Posted by Perscitus View Post
That plus OP and many expect too much from these econoboxes. Need to take them all with a big grain of salt.

Subaru engines, Hitachi control managment programmed by yet another company (OE tune is third party outsourced) with semi-accurte inputs from a multitude of third party provided sensors... its just BAU for a mass produced appliance. The more recent MY they are, the worse and increasingly overcomplicated... bean-counter magic touch.

Btw, 2018 just got new ECU and TCU reflashes this month, have them apply whats applicable, do a full TPS, idle stability and AVCS OCV/OSV relearn and take it from there.
I dont entirely agree about the expectation level. I've owned various turbo VWs, Focus ST, etc. all of which are budget "hot hatch" cars in the same segment. All the stock programming has been smooth, great power delivery, etc.

Dont get me wrong, I really like my wrx, but the stock tune is beyond garbage. The dumb throttle mapping, choppy power delivery, very obvious dead spots.

It's just frustrating to have a great motor hooked to a fantastic AWD system and have it fall short for reasons other car manufacturers dont seem to have a problem with.
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Old 07-14-2018, 03:51 PM   #33
Perscitus
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Subaru excels in pathetic stock tunes, for FI and even NA motors. Its been like this for 18-20 years now and only gotten worse since say circa 2008 and the subsequent the switch from Denso to Hitachi control systems circa 2014.

And yes, I am not talking about getting more peak or avg hp/tq out, just basic drivability... DBW throttle response, throttle plate vs accelerator pedal correlation, boost control, gearing, etc.
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Old 07-14-2018, 04:20 PM   #34
ragman
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Itís that stock tune. Drivability is horrible. I seriously didnít want to drive my new 2017 car after dealing with it for its first year.

Stage 1 tune, solved all my concerns.

Itís tough making the call to tune a new car under warranty. But for me, it was either tune the car, or sell it.
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Old 07-14-2018, 04:54 PM   #35
Straight6
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I honestly think that a good stage 1 tune is better for this engine than the OEM mapping. I would see boost spikes as high as 23 PSI and erratic boost control on the stock tune. Also, knock galore and super sensitive throttle that would make it impossible to stay out of boost before the engine was even warmed up. This turned out to be a very stout motor that Subaru made for us that just happens to need a little bit of aftermarket help when it comes to tuning.
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