Dyno run at K&N during an '05 fit test.

vr6go · 03-31-2005, 10:08 PM

Don't post much here but since there has been minor debates over the Typhoons gains without a lot of dyno plots to support it, at least as far as I've seen, I thought I'd share the runs K&N ran on their dyno using my '05. They were doing a test fit so that they can give the "blessing" on fitment for '05 STI's. Also, they were doing some initial R&D concerning a velocity stack at the inlet to the intake. I have a COBB turboback exhaust (catted) and am stock besides this. It still appears to be a 12WHP gain. BTW- They are a great bunch of guys over there. Enjoy........

***BoostJunkie*** · 03-31-2005, 11:03 PM

wow, a 12 whp gain AFTER a turboback exhaust? that's impressive, for $200 I will definitely consider getting one. I wonder if one would see the same kind of gain after turboback and stage 2 EM.

***Datadatum*** · 04-02-2005, 06:33 AM

Interesting how it leaned out more than stock after 3500 rpm...

ValvetrainEngineer · 04-02-2005, 04:57 PM

Quote:

Originally Posted by Datadatum

Interesting how it leaned out more than stock after 3500 rpm...

Ha, I noticed that too. How many threads and experts have stated that in no way could it change AFR?? I'm not too worried about it, as long as it's not enough to fail my piston....

Also note they did 2nd gear pulls...I had heard that 5th gear was best.

vr6go · 04-02-2005, 08:07 PM

I don't think it's too realistic to think that the A/F ratio would stay identical, especially, immediately following the install. I don't believe that they reset the ECU but am not sure. Either way it did not have much time to learn and adapt to an increase in air flow. I'd like to have them do it again say next week and see if it's the same. Don't think that will happen though. Also, not sure why they pulled in second gear. I thought third would work best on the STI but since it was a before and after comparison I'm sure it didn't matter to them.

ValvetrainEngineer · 04-02-2005, 09:23 PM

Quote:

Originally Posted by vr6go

I don't think it's too realistic to think that the A/F ratio would stay identical, especially, immediately following the install. I don't believe that they reset the ECU but am not sure. Either way it did not have much time to learn and adapt to an increase in air flow. I'd like to have them do it again say next week and see if it's the same. Don't think that will happen though. Also, not sure why they pulled in second gear. I thought third would work best on the STI but since it was a before and after comparison I'm sure it didn't matter to them.

Good point. I was thinking AFR could stay the same, but that would be after a bit of learning I guess. I'd love to see another run after a week or so...

Titleist71 · 04-03-2005, 06:42 PM

I don't think it's that bad as far as the AFR. Just think, you'll be getting better gas mileage now in town!

R4ND0M_AX3 · 04-04-2005, 01:37 PM

A 5speed STi? Why did they do the pull in second?

03-31-2005, 10:08 PM	#1
vr6go Amateur STI Driver Location: SoCal Posts: 8 IWSTI Addict since: May 2004 Trader Rating: (0)	Don't post much here but since there has been minor debates over the Typhoons gains without a lot of dyno plots to support it, at least as far as I've seen, I thought I'd share the runs K&N ran on their dyno using my '05. They were doing a test fit so that they can give the "blessing" on fitment for '05 STI's. Also, they were doing some initial R&D concerning a velocity stack at the inlet to the intake. I have a COBB turboback exhaust (catted) and am stock besides this. It still appears to be a 12WHP gain. BTW- They are a great bunch of guys over there. Enjoy........ This ad is not endorsed by this member. Please register or login to hide this ad.

04-04-2005, 01:37 PM	#8
R4ND0M_AX3 Grassroots STI Racer Car: 05 Subaru WRX STi Fav Mod: Cobb StreetTUNER Location: Elk Grove, CA USA Posts: 591 IWSTI Addict since: Jul 2004 Trader Rating: (0)	A 5speed STi? Why did they do the pull in second? This ad is not endorsed by this member. Please register or login to hide this ad.

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03-31-2005, 11:03 PM	#2
*BoostJunkie* Sold My Soul For Mods Car: '05 CGM STi Fav Mod: Track Time Location: Bethesda, MD Posts: 6,652 IWSTI Addict since: Jun 2004 Trader Rating: (14)	wow, a 12 whp gain AFTER a turboback exhaust? that's impressive, for $200 I will definitely consider getting one. I wonder if one would see the same kind of gain after turboback and stage 2 EM.

04-02-2005, 06:33 AM	#3
*Datadatum* 100% More Wingless Car: 05 STi + 08 OBXT Fav Mod: baby seats Location: Jacksonville, FL Posts: 5,891 IWSTI Addict since: May 2004 Trader Rating: (0)	Interesting how it leaned out more than stock after 3500 rpm...

04-02-2005, 08:07 PM	#5
vr6go Amateur STI Driver Location: SoCal Posts: 8 IWSTI Addict since: May 2004 Trader Rating: (0)	I don't think it's too realistic to think that the A/F ratio would stay identical, especially, immediately following the install. I don't believe that they reset the ECU but am not sure. Either way it did not have much time to learn and adapt to an increase in air flow. I'd like to have them do it again say next week and see if it's the same. Don't think that will happen though. Also, not sure why they pulled in second gear. I thought third would work best on the STI but since it was a before and after comparison I'm sure it didn't matter to them.

04-03-2005, 06:42 PM	#7
Titleist71 Professional STI Racer Car: 05 PSM STi w/ custom Fav Mod: TiaL 38mm vented free as a bird. Location: Maine Posts: 620 IWSTI Addict since: Mar 2005 Trader Rating: (1)	I don't think it's that bad as far as the AFR. Just think, you'll be getting better gas mileage now in town!