2008 STI - 312whp/401wtq - Page 2

bklynpanman · 02-13-2008, 09:17 AM

Quote:

Originally Posted by sponaugle

Oh the ringland collapse had nothing to do with the above tune, as it happened before the Meth install. It was a small user error on my part.

In particular I was recalibrating the MAP sensor in the UTEC (the map sensor in the new car is not the same as the old), and I fat fingered it.. Since I was using the UTEC boost control in PID mode, it did a great job of retargeting the boost to his the 20psi... Unfortunately that ended up being about 24psi. First and second gear didn't hit that high (not enough load and duty cycle), but one nice long 4th gear pull, followed by some flashes up top seemed to be it. It had a small puff at idle... ah the sign of the ringland. As posted on Nasioc in a few places, that is where I discovered that the pistons are indeed the same as the previous year.. and indeed as fragile if you do something stupid.

It was cool to take apart the new 08 motor and see how the exhaust AVCS setup looked.

I should add however that any agressive tune with Meth has some inherent danger if the meth system fails. For that reason I used the Aquamist stuff with the flow sensor and boost cut option. If the system fails, the boost will be wastegate.

Cheers,

Jeff Sponaugle

oh i see.. I didn't mean to come across with an attitude. Stupid me.. i couldn't find the post over at nasioc. What did you end up doing to remedy ? You dropped in some better pistons? The reason I ask is because I'm trying to get as much info as possible to plan my attack on the 08 when it arrives. Thanks for the explanation.

sponaugle · 02-13-2008, 09:37 AM

Quote:

Originally Posted by Digitalfiend

Are the pistons in the 07-08 the same as the 04-06?

Yep.. 04, 05, 06, 07, and 08 are all the same pistons.

sponaugle · 02-13-2008, 09:43 AM

Quote:

Originally Posted by bklynpanman

oh i see.. I didn't mean to come across with an attitude. Stupid me.. i couldn't find the post over at nasioc. What did you end up doing to remedy ? You dropped in some better pistons? The reason I ask is because I'm trying to get as much info as possible to plan my attack on the 08 when it arrives. Thanks for the explanation.

No worries.. I dropped in CPs, just because I had a set. The CPs are very very strong, which is nice on a car that I will be doing lots of experimenting with. You can always run the car as it is and wait for a problem, or jump in ahead of time. It is not that replacing the pistons is required. You can run a good tune and be very happy. The only downside is if something goes a little wrong, you can expect to break the ringlands. With the CPs you have a lot more resistance if you have a situation where knock occurs.

Jeff

bklynpanman · 02-13-2008, 10:26 AM

Quote:

Originally Posted by sponaugle

No worries.. I dropped in CPs, just because I had a set. The CPs are very very strong, which is nice on a car that I will be doing lots of experimenting with. You can always run the car as it is and wait for a problem, or jump in ahead of time. It is not that replacing the pistons is required. You can run a good tune and be very happy. The only downside is if something goes a little wrong, you can expect to break the ringlands. With the CPs you have a lot more resistance if you have a situation where knock occurs.

Jeff

The CP's seem to be the consensus.. I definitely want the added piece of mind.. Thanks for the info.. I've found all your posts on both forums great. I come from an Acura and their forums and "experts" don't compare to you guys. Great stuff

***Datadatum*** · 02-14-2008, 04:39 PM

Jeff - how is the car to drive?

MEXSTIMPREZA · 02-15-2008, 10:08 AM

Awesome Jeff, keep up the good work.
Any suspension, steering, alignment work in the near future? You will need it asap with that amazing tq.

blaznwrx · 02-16-2008, 03:29 PM

so whats next to keep that torque curve going?
is it that the turbo gives up after 4k? or lack of fuel?

mofoSTI · 02-17-2008, 10:00 AM

my 04 turbo had been over boosted to 23 psi and it lived for over 54k

blaznwrx · 02-17-2008, 11:37 PM

Quote:

Originally Posted by mofoSTI

my 04 turbo had been over boosted to 23 psi and it lived for over 54k

???

54000rpm? jeesh thats quite high revs u got there.
heh.
my wrx has 125K and i've been boosting 20psi for the last 70,000miles so i know the turbos can last.
i mean 4k rpm

mofoSTI · 02-23-2008, 12:20 PM

Thats 54,000 miles. And I red lined it on a daily basis with several runs a week up to 145mph on the back roads.

impressive · 03-04-2008, 09:53 PM

awesome setup any more pics of the water tank with the perrin p1 what kind of water tank was that how many liters?

sponaugle · 03-05-2008, 07:00 AM

Quote:

Originally Posted by impressive

awesome setup any more pics of the water tank with the perrin p1 what kind of water tank was that how many liters?

The PWI-1 is attached to the side of the windshield washer tank, and I use that tank as a source. It has a capacity of approximatly 4Ls, which seems to last a few tanks fulls of gas, depending on how I drive.

Jeff

mofoSTI · 03-10-2008, 08:20 AM

This setup looks like something worth trying. Ultimately I would like to see how much power the 08 is able to make with all the boltons one can do. I have not tried meth or alky yet, but 400lb ft of torque to the wheels sounds worth it to me.

twigg107 · 04-27-2008, 08:52 PM

Congrats jeff on the article in subiesports!!!!

mofoSTI · 05-02-2008, 07:09 AM

Any plans on running headers or maby even cams?

02-14-2008, 04:39 PM	#20
*Datadatum* 100% More Wingless Car: 05 STi + 08 OBXT Fav Mod: baby seats Location: Jacksonville, FL Posts: 5,587 Join Date: May 2004 Trader Rating: (0)	Re: 2008 STI - 312 whp/401 lb-ft Jeff - how is the car to drive?

02-15-2008, 10:08 AM	#21
MEXSTIMPREZA Junior STI Driver Fav Mod: Coming Soon Location: Juarez, Mexico Posts: 192 Join Date: Dec 2007 Trader Rating: (0)	Re: 2008 STI - 312 whp/401 lb-ft Awesome Jeff, keep up the good work. Any suspension, steering, alignment work in the near future? You will need it asap with that amazing tq.

02-16-2008, 03:29 PM	#22
blaznwrx Junior STI Driver Car: Blaze Yellow WRX Fav Mod: New Fat Sticky Tires Posts: 158 Join Date: Oct 2007 Trader Rating: (0)	Re: 2008 STI - 312 whp/401 lb-ft so whats next to keep that torque curve going? is it that the turbo gives up after 4k? or lack of fuel?

02-17-2008, 10:00 AM	#23
mofoSTI Spec C Club Car: 08 STI,sr20det 510 Fav Mod: boob job for wife Location: springtuckey, OR Posts: 2,386 Join Date: Sep 2004 Trader Rating: (0)	Re: 2008 STI - 312 whp/401 lb-ft my 04 turbo had been over boosted to 23 psi and it lived for over 54k

02-23-2008, 12:20 PM	#25
mofoSTI Spec C Club Car: 08 STI,sr20det 510 Fav Mod: boob job for wife Location: springtuckey, OR Posts: 2,386 Join Date: Sep 2004 Trader Rating: (0)	Re: 2008 STI - 312 whp/401 lb-ft Thats 54,000 miles. And I red lined it on a daily basis with several runs a week up to 145mph on the back roads.

03-04-2008, 09:53 PM	#26
impressive Junior STI Driver Fav Mod: in transit Posts: 152 Join Date: Dec 2006 Trader Rating: (1)	Re: 2008 STI - 312 whp/401 lb-ft awesome setup any more pics of the water tank with the perrin p1 what kind of water tank was that how many liters?

03-10-2008, 08:20 AM	#28
mofoSTI Spec C Club Car: 08 STI,sr20det 510 Fav Mod: boob job for wife Location: springtuckey, OR Posts: 2,386 Join Date: Sep 2004 Trader Rating: (0)	Re: 2008 STI - 312 whp/401 lb-ft This setup looks like something worth trying. Ultimately I would like to see how much power the 08 is able to make with all the boltons one can do. I have not tried meth or alky yet, but 400lb ft of torque to the wheels sounds worth it to me.

04-27-2008, 08:52 PM	#29
twigg107 Spec C Club Car: 08 DGM STI Fav Mod: Me..... Location: Vancouver, Wa Posts: 1,463 Join Date: Jun 2006 Trader Rating: (1)	Re: 2008 STI - 312 whp/401 lb-ft Congrats jeff on the article in subiesports!!!!

05-02-2008, 07:09 AM	#30
mofoSTI Spec C Club Car: 08 STI,sr20det 510 Fav Mod: boob job for wife Location: springtuckey, OR Posts: 2,386 Join Date: Sep 2004 Trader Rating: (0)	Re: 2008 STI - 312 whp/401 lb-ft Any plans on running headers or maby even cams? This ad is not endorsed by this member. Please register or login to hide this ad.