Dyno'd AP Comparo - Stock, CBE, Perrin Map, Cobb Map
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Dyno'd AP Comparo - Stock, CBE, Perrin Map, Cobb Map
Short story: almost 70 WHP gain over stock on a DynoDynamics with just a CBE and AP reflash…I can’t complain!
Long story: I took my GSR over to Ptuning Saturday for some pulls and to get my CBE installed. All pulls were in 3rd gear on a Dyno Dynamics dyno with 93 octane from the pump. Each run (#'s 1-4) consisted of 3 pulls, the results represent the average, i.e. throwing out high/low.
As you can see, the Perrin map showed a more aggressive AFR after 4700, and but, despite this, had 19 less peak horsepower than the Cobb map…most likely because the Cobb map held slightly more boost from 5300 to redline. The Cobb gave me a more aggressive AFR in the low rpms, and low-end torque results reflect this. While peak torque was practically identical, you can see the Perrin gave me a narrower torque curve.
BTW, This 93 map from Cobb is new--it came out 5 March--so it may have been an “answer” to the Perrin tune that has been out for a while.
Toan from Ptuning did the pulls; what a great guy! Since this was the first X they had handled, he was extra meticulous and gave me a lot more time than I paid for so he would have some good baseline data for tuning Xs in the future.
Long story: I took my GSR over to Ptuning Saturday for some pulls and to get my CBE installed. All pulls were in 3rd gear on a Dyno Dynamics dyno with 93 octane from the pump. Each run (#'s 1-4) consisted of 3 pulls, the results represent the average, i.e. throwing out high/low.
- 1st run: Completely Stock ’08 GSR with 650 miles: 231 WHP / 247 WTQ
- 2nd run (about an hour later): Added Perrin CBE: 235 WHP / 255 WTQ
- 3rd run (about 15 min later): Installed AP, flashed Cobb Stage 1 93 Octane Map: 298 WHP / 281 WTQ
- 4th run (about 15 min later): flashed Perrin Stage 1 93 Octane Map: 279 WHP / 281 WTQ
As you can see, the Perrin map showed a more aggressive AFR after 4700, and but, despite this, had 19 less peak horsepower than the Cobb map…most likely because the Cobb map held slightly more boost from 5300 to redline. The Cobb gave me a more aggressive AFR in the low rpms, and low-end torque results reflect this. While peak torque was practically identical, you can see the Perrin gave me a narrower torque curve.
BTW, This 93 map from Cobb is new--it came out 5 March--so it may have been an “answer” to the Perrin tune that has been out for a while.
Toan from Ptuning did the pulls; what a great guy! Since this was the first X they had handled, he was extra meticulous and gave me a lot more time than I paid for so he would have some good baseline data for tuning Xs in the future.
Last edited by cyniclaus; Mar 16, 2009 at 09:42 AM.
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nice numbers first of all. I wasn't aware of a new Cobb AP stage one map.....hmmm I guess I need to look into this as I am currently running the Perrin Stage one map. Also, it might have been worth trying to run the Cobb Stage 2 map with the CBE installed. I know they call for a TBE, but it has been proven that the stock downpipe and cat have a good flow in the stock form. It would have been interesting to see what the Stage 2 map would have done for you.
Truthfully I think you will see better gains from the Stage two map, and you maybe missing out a little power running that Stage one map. Only my opinion though......
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nice numbers first of all. I wasn't aware of a new Cobb AP stage one map.....hmmm I guess I need to look into this as I am currently running the Perrin Stage one map. Also, it might have been worth trying to run the Cobb Stage 2 map with the CBE installed. I know they call for a TBE, but it has been proven that the stock downpipe and cat have a good flow in the stock form. It would have been interesting to see what the Stage 2 map would have done for you.
Truthfully I think you will see better gains from the Stage two map, and you maybe missing out a little power running that Stage one map. Only my opinion though......
Truthfully I think you will see better gains from the Stage two map, and you maybe missing out a little power running that Stage one map. Only my opinion though......
I don't think I'd risk running the Stage 2 without a full turboback...also because you are supposed to remove the top wastegate solenoid restrictor pill to run it. I figure whenever you run a tune, the tuner is reducing the factory safety margin by a certain amount in order to increase performance. However, a reputable tuner carefully balances risk versus reward. If Cobb thought it were universally safe to run their stage 2 with a catback, they would advertise it as such.
If anything, I would consider a custom AP tune first
#7
This will be my first mod. The ability to go back to stock is great. Do you have a boost gauge im curious as to what they boost on this map.
Also does the AP have the ability to run its own custom tune? Like can you tune your car yourself for your mods and afr to your liking?
Also does the AP have the ability to run its own custom tune? Like can you tune your car yourself for your mods and afr to your liking?
Last edited by oskinosmee; Mar 18, 2009 at 03:05 PM.
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This will be my first mod. The ability to go back to stock is great. Do you have a boost gauge im curious as to what they boost on this map.
Also does the AP have the ability to run its own custom tune? Like can you tune your car yourself for your mods and afr to your liking?
Also does the AP have the ability to run its own custom tune? Like can you tune your car yourself for your mods and afr to your liking?
You can't tune it yourself, but there are official AP tuners in most areas...Cobb has a search feature on their website. Unfortunately, many of these "pro tuners" are Subie specialists and are not tuning the X yet.
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Does the CBE make that much of a difference between the Cobb and Perrin maps? I have the AP with no CBE and the Perrin stage 1 "feels" like it pulls much harder than the new Cobb stage 1. Just my 2 pennies!
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Seriously, though...just 'cause the Cobb map worked better for me doesn't mean it's the be-all end-all. I was just trying to add some empirical data to balance out all the subjective evaluations
I'm waiting on the AP update to come out, then I will try the Stage 2 93 map and post the dyno results from that too
Last edited by cyniclaus; Mar 20, 2009 at 08:25 AM.