SPT “Power Pack” Dyno results…

webcrawlr · 12-23-2006, 02:27 PM

First I’d like to thank nonissan and austinpike for helping out with the dyno costs and RS Motors for being so helpful. This test was in part possible because of you. Anyone else that thinks this was good info and would also like to help out I won’t turn it down. I’m far from being even.

The Facts:<o></o>
I decided to put Subaru’s claim of 45 hp and 24 lb-ft of torque (interpolated crank horsepower as tested on a Dynapack) for the SPT Power Pack on a 06 STi to the test.

The car is a 2006 STi w/ 2600 miles. 100% stock. Gas being used is BP 92 octane with no ethanol.

The Parts:
SPT Power Pack (SPT intake, heat shield and cat back exhaust).

The Process:
I will be using a Mustang dyno at RS Motors and doing 4th gear pulls. After adding or removing any parts I will reset my ECU and do the Vishnu Reset and give my ECU 50-100 miles to learn.
<o></o>
The Results:
Stock run: Inside temp was about 55 degrees. 244hp / 236tq (corrected).
Modified run: Inside temp was about 55 degrees. 229hp / 230tq (corrected).

Just to be clear, the lower lines of every group is the pull with SPT parts

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<o></o>
The Conclusion:<o></o>
Let me first start off by saying that the dyno I was on gives numbers around 220-225hp for a stock STi. When I decided to do this test I brought my car in on a 33 degree day (inside wasn't heated that day) and pulled a 251/255 corrected. My ECU was reset about a 3 days before. It seems my car may be some what of a factory freak.
<o></o>
With numbers like that I was thinking that no matter what I pulled after the power pack people would have thought my first pull was not accurate. I was also wondering that since my car was doing so well stock that the power pack may hinder the performance more then it would a “normal” STi. I’m no tuner or expert there so I’ll leave that to the pros.
<o></o>
After adding the power pack the butt dyno told me right away I was down on power. I knew going in to get the pulls after adding the parts that it just wasn’t the same. As you can see from the picture I made the pull with the SPT parts last night. With those numbers being low I removed the parts later that night, reset the ECU and ran another stock pull today. I wanted to make sure that the stock numbers weren’t totally off. I did three pulls today (back to back) and each pull made more power. I think if I would have given the ECU another day or two to learn I would have put down close to what I did the very first stock session.

The tuner there seemed to think because the mod'd intake flowed so much more air that the car moved it to another map with higher boost/timing tables, had issues and ended up retarding timing/pulling boost to combat knock. He's no Subby expert (tunes mostly Evo's) but I just thought I'd post that up as well.
<o></o>
Anyway, those are the results. Love’m or hate’m.

johnlude85 · 12-23-2006, 02:30 PM

but...take those mods, add a down pipe, and an ap and re dyno. then get a protune and re-dyno again. im sure youll see MUCH better numbers.

webcrawlr · 12-23-2006, 02:32 PM

Quote:

Originally Posted by johnlude85

but...take those mods, add a down pipe, and an ap and re dyno. then get a protune and re-dyno again. im sure youll see MUCH better numbers.

Oh, no doubt I think these mods will net some horsepower when tuned for it. The point of this was to test the HP claim with no ECU reflash (tune) like SPT said.

flatthump · 12-23-2006, 02:34 PM

Quote:

Originally Posted by webcrawlr

The tuner there seemed to think because the mod'd intake flowed so much more air that the car moved it to another map with higher boost/timing tables,

I dont think soo...

webcrawlr · 12-23-2006, 02:37 PM

Quote:

Originally Posted by flatthump

I dont think soo...

Instead of just disagreeing how about posting up why you disagree or what you think it may be.

johnlude85 · 12-23-2006, 02:45 PM

Quote:

Originally Posted by webcrawlr

Oh, no doubt I think these mods will net some horsepower when tuned for it. The point of this was to test the HP claim with no ECU reset by SPT.

what do you mean no ecu reset? does that mean you installed everything without doing the ecu reset procedure and just bolting on and running, or does that mean doing the mods without a performance reflash? in most cases you cant really just bolt something on and be wowed by the performance without any kind of tune or em. i have alot of work done to my 4th gen prelude and its not tuned for anything on there. after i get it tuned, i should be seeing around 220-235 whp. i dont know exactly what spt said about their performance gains, but i dont know if youre just picking on spt or not. im not saying anything bad about you for calling shennanigans of spt, but i think the same results can be found from any aftermarket product of the same design (spt intake vs. cobb intake, spt cbe vs. perrin cpe, etc). but defenately a verry informative thread on your part.

flatthump · 12-23-2006, 03:06 PM

Quote:

Originally Posted by webcrawlr

Instead of just disagreeing how about posting up why you disagree or what you think it may be.

Lets forget that for a second.

These pulls were in fourth gear huh? I see your max apeed was 89mph at almost 7000rpm. That right there will swell the numbers.

And it says you max boost was 14.0psi and it was 33degrees outside?

So the first pull with the SPT power pack caused knock issues? I wish we could have seen a log of that pull. Cause this really isnt a Stock vs. SPT cause you said the tuner had to alter a few values to get it to quit pinging.

webcrawlr · 12-23-2006, 03:08 PM

Quote:

Originally Posted by johnlude85

what do you mean no ecu reset?

I reset the ECU everytime per my first post. What I meant to say was SPT said no reflash (tune) was needed. I got my wording mixed up there. It's fixed now.

webcrawlr · 12-23-2006, 03:12 PM

Quote:

Originally Posted by flatthump

Lets forget that for a second.

These pulls were in fourth gear huh? I see your max apeed was 89mph at almost 7000rpm. That right there will swell the numbers.

And it says you max boost was 14.0psi and it was 33degrees outside?

So the first pull with the SPT power pack caused knock issues? I wish we could have seen a log of that pull. Cause this really isnt a Stock vs. SPT cause you said the tuner had to alter a few values to get it to quit pinging.

You're putting words in my mouth. Read the first post. Temps were 55 degrees for both pulls on the graph. There was NO ECU flashing or touching done by the tuner in any way. The MPH is close to 90 at 6980 for both runs. Yes it was 4th.

It is in every fashion stock vs. SPT.

flatthump · 12-23-2006, 03:16 PM

Quote:

Originally Posted by webcrawlr

The tuner there seemed to think because the mod'd intake flowed so much more air that the car moved it to another map with higher boost/timing tables, had issues and ended up retarding timing/pulling boost to combat knock. He's no Subby expert (tunes mostly Evo's) but I just thought I'd post that up as well.
<o></o>

I misunderstood this here. I Apologize.

fry_ed · 12-23-2006, 03:16 PM

very interesting findings..thumbs down to SPT on that one.

nice stock #'s as well.

DoctorSTi · 12-23-2006, 03:19 PM

besides anyone who has the spt intake correct me if I am wrong, but it expressly says in the instructions to unhook the battery to reset the ecu after the modification. Soooo if I am reading this correctly you did not reset the ecu after install of the spt intake making this whole test flawed. Someone please correct me if I am wrong since it's been a few months since I last installed the intake for the THIRD freaking time. Every time I install it I feel like my car drives worse and loses a lot of low end power. I have not installed since going stage 2 and I think when I do go stage two I might try to get a map done with it installed a map done with the stock to see what the difference is. This will occur in the spring so I will post up the results then.

edit: ah i read you did reset... good show then. Interesting to see proof for what i felt every time I installed the intake. thanks for doing this for the community.

flatthump · 12-23-2006, 03:21 PM

Quote:

Originally Posted by webcrawlr

had issues and ended up retarding timing/pulling boost to combat knock.

But you are actually showing a higher max boost value on your second run?

Do you have any idea how much timing it pulled?

Chinky_Sti · 12-23-2006, 05:06 PM

so is it worth getting the spt power pack but you have to get it tune.. so i was thinking what happens if you add the cobb ap to the mix and get it tuned on a dynojet will it be a different story..

TeRonde · 12-23-2006, 06:51 PM

I'd be curious to see what SOA would have to say about your results. Do you plan on forwarding this to them so that they have a chance to respond? On the stock pull, you gave your car 3 days to relearn after the reset. On the SPT pull, you only had a 3.5 hour timeframe to do the first dyno run, install the SPT parts, reset the ECU, and drive 50-100 miles. You also state that after reverting back to stock and going back the next day, the car continued to make more power each run. It appears the ECU was relearning. Cobb has dyno proof that the SPT intake increased hp without the heatshield. The SPT exhaust has larger diameter piping. An intake that is proven to increase hp and an exhaust that is less restrictive aren't 2 things that decrease hp/tq normally. Something doesn't sound right.

Thank you for doing these dyno runs. I think this opens up valuable lines of communication on a subject that is hot in the subaru community.

12-23-2006, 02:27 PM	#1
webcrawlr STI Driver Car: 06 WRB STi Location: MN Posts: 215 Join Date: Oct 2006 Trader Rating: (0)	SPT “Power Pack” Dyno results… First I’d like to thank nonissan and austinpike for helping out with the dyno costs and RS Motors for being so helpful. This test was in part possible because of you. Anyone else that thinks this was good info and would also like to help out I won’t turn it down. I’m far from being even. The Facts:<o></o> I decided to put Subaru’s claim of 45 hp and 24 lb-ft of torque (interpolated crank horsepower as tested on a Dynapack) for the SPT Power Pack on a 06 STi to the test. The car is a 2006 STi w/ 2600 miles. 100% stock. Gas being used is BP 92 octane with no ethanol. The Parts: SPT Power Pack (SPT intake, heat shield and cat back exhaust). The Process: I will be using a Mustang dyno at RS Motors and doing 4th gear pulls. After adding or removing any parts I will reset my ECU and do the Vishnu Reset and give my ECU 50-100 miles to learn. <o></o> The Results: Stock run: Inside temp was about 55 degrees. 244hp / 236tq (corrected). Modified run: Inside temp was about 55 degrees. 229hp / 230tq (corrected). Just to be clear, the lower lines of every group is the pull with SPT parts <o></o> <o></o> The Conclusion:<o></o> Let me first start off by saying that the dyno I was on gives numbers around 220-225hp for a stock STi. When I decided to do this test I brought my car in on a 33 degree day (inside wasn't heated that day) and pulled a 251/255 corrected. My ECU was reset about a 3 days before. It seems my car may be some what of a factory freak. <o></o> With numbers like that I was thinking that no matter what I pulled after the power pack people would have thought my first pull was not accurate. I was also wondering that since my car was doing so well stock that the power pack may hinder the performance more then it would a “normal” STi. I’m no tuner or expert there so I’ll leave that to the pros. <o></o> After adding the power pack the butt dyno told me right away I was down on power. I knew going in to get the pulls after adding the parts that it just wasn’t the same. As you can see from the picture I made the pull with the SPT parts last night. With those numbers being low I removed the parts later that night, reset the ECU and ran another stock pull today. I wanted to make sure that the stock numbers weren’t totally off. I did three pulls today (back to back) and each pull made more power. I think if I would have given the ECU another day or two to learn I would have put down close to what I did the very first stock session. The tuner there seemed to think because the mod'd intake flowed so much more air that the car moved it to another map with higher boost/timing tables, had issues and ended up retarding timing/pulling boost to combat knock. He's no Subby expert (tunes mostly Evo's) but I just thought I'd post that up as well. <o></o> Anyway, those are the results. Love’m or hate’m. This ad is not endorsed by this member. Please register or login to hide this ad. Last edited by webcrawlr : 12-23-2006 at 02:30 PM.

12-23-2006, 03:19 PM	#12
DoctorSTi The Next Petter Solberg Car: 05 CGM STI on 57F br Fav Mod: stage 2 Location: Newark, DE Posts: 869 Join Date: Jan 2005 Trader Rating: (2)	besides anyone who has the spt intake correct me if I am wrong, but it expressly says in the instructions to unhook the battery to reset the ecu after the modification. Soooo if I am reading this correctly you did not reset the ecu after install of the spt intake making this whole test flawed. Someone please correct me if I am wrong since it's been a few months since I last installed the intake for the THIRD freaking time. Every time I install it I feel like my car drives worse and loses a lot of low end power. I have not installed since going stage 2 and I think when I do go stage two I might try to get a map done with it installed a map done with the stock to see what the difference is. This will occur in the spring so I will post up the results then. edit: ah i read you did reset... good show then. Interesting to see proof for what i felt every time I installed the intake. thanks for doing this for the community. Last edited by DoctorSTi : 12-23-2006 at 03:27 PM.

12-23-2006, 06:51 PM	#15
TeRonde Amateur STI Driver Posts: 39 Join Date: Aug 2006 Trader Rating: (0)	I'd be curious to see what SOA would have to say about your results. Do you plan on forwarding this to them so that they have a chance to respond? On the stock pull, you gave your car 3 days to relearn after the reset. On the SPT pull, you only had a 3.5 hour timeframe to do the first dyno run, install the SPT parts, reset the ECU, and drive 50-100 miles. You also state that after reverting back to stock and going back the next day, the car continued to make more power each run. It appears the ECU was relearning. Cobb has dyno proof that the SPT intake increased hp without the heatshield. The SPT exhaust has larger diameter piping. An intake that is proven to increase hp and an exhaust that is less restrictive aren't 2 things that decrease hp/tq normally. Something doesn't sound right. Thank you for doing these dyno runs. I think this opens up valuable lines of communication on a subject that is hot in the subaru community. This ad is not endorsed by this member. Please register or login to hide this ad.

12-23-2006, 02:30 PM	#2
johnlude85 Spec C Club Car: 2005 OBP STi Fav Mod: CBE Location: Milford, NJ/Allentown, PA Posts: 1,071 Join Date: Aug 2006 Trader Rating: (0)	but...take those mods, add a down pipe, and an ap and re dyno. then get a protune and re-dyno again. im sure youll see MUCH better numbers.

12-23-2006, 03:16 PM	#11
fry_ed Junior STI Driver Fav Mod: student Location: Los Angeles Posts: 191 Join Date: Feb 2004 Trader Rating: (0)	very interesting findings..thumbs down to SPT on that one. nice stock #'s as well.

12-23-2006, 05:06 PM	#14
Chinky_Sti Spec C Club Car: 06 STI Fav Mod: Stage 2 for now :) Location: NJ Posts: 1,470 Join Date: Oct 2006 Trader Rating: (5)	so is it worth getting the spt power pack but you have to get it tune.. so i was thinking what happens if you add the cobb ap to the mix and get it tuned on a dynojet will it be a different story..