[Turninconcepts.com]

Numbers
Dyno: Dynojet
Tuner: Jorge (riftswrx) P&L Motorsports
Wheel HP: 297whp (stock 238whp)
Wheel TQ: 344wtq(stock 253tq)


Car Info
Year: 2008
Engine Management: COBB APv2
Turbo: STOCK
Intercooler: STOCK
Injectors: STOCK
Intake/Inlet: P&L Intake
Headers: STOCK
Uppipe: STOCK
Downpipe: Turbo XS with P&L catback adapter(catless)
CBE: STOCK
Other Power Mods: STOCK



Dyno Sheets:

Two dyno plots for you here. The first one shows the raw, uncorrected power in the different SI drive modes. Run file 005 is S#, 007 is S and 006 is I. The torque line of S# is in pink and very light, but you should be able to make it out.

The second plot is an attempt by the dyno software to correct for the tempterature difference between the last time I was tuned with just a DP and this time with the added intake. There was a 30* difference in temp between the two days, noted at the bottom. The later peak in torque is due to the temp difference. The higher HP figures are a result of the intake.




Click here for more detailed images.
http://turninconcepts.com/forums/08_...ke_DP_dyno.jpg
http://turninconcepts.com/forums/08_...ted%20dyno.jpg





Modifications

Just a catless turbo XS downpipe with P and L midpipe adapter and P&L intake.

Information

Back for another tuning session at P&L Motorsports with Jorge. After seeing great things of their intake for the 08 we decided to give it a try and see what it could do on our car. Last time we dynoed the car with just a catless DP it put down about 270 WHP and 357 WTQ or so. The only mod to the car since the last time was the intake and 10000 miles or so of driving.

First off, the install of the intake is very straight forward. Remove the old and install the new. The new one looks to be a 3" tube with filter and all hardware needed to install. There is a very nice silicone coupler for the intake to turbo inlet, a well designed attachment point on the intake that uses the factory airbox mount to hold it in place, and comes with a VERY large K&N filter. Fitment is perfect as expected and all the intakes are made in house by P&L's master fabricators.

On to the good stuff. I'll just come out and say it; the intake resulted in roughly 25whp after tuning. Again, this was with just an intake. Nothing else. After driving the car, it definitely pulls harder up top which is what I wanted and has a very nice intake tone. The intake is quiet during cruising which is very nice as it doesn't get annoying while driving on the highway, but has a nice growl and hiss at full throttle.

You can see on the plots that there are a three different ones indicating the different power levels with SI drive and its settings. There is obviously a huge difference between I and S as seen and a much smaller difference between S and S#. Jorge's ideas behind the SI drive functionality are to create a map for gas mileage (I), sport conditions in foul weather (S), and all out race conditions (S#). After driving the car 600 miles or so after tuning, I think he has done well. My gas mileage in I mode at 65-70mph on the highway increased from 22-27.5 mpg. At 80 it increase from 21-22.8 mpg. That to me is money straight in my pocket!!!!

Overall driveability has also increased in that the car much more smooth in all conditions with the new throttle mapping. I am definitely enjoying the car much more than before.

You will see in the second plot that the torque peak is much later than before. We feel this is due to the temp differences that day compared to the last. In reality while driving, the car doesn't have any more lag than it did before the tuning session and actually feels like it has more torque. High temps are a killer!!

As proof of concept on this mods, we also had another 08 sti there that day who is a friend of ours. He had the exact same mods as mine and made within 2 whp and 5 ftlbs of torque, thus these power levels are very real and repeatable.

Overall, I am loving the car as usual. It really has been great. The next mod we are planning on, and hopefully in a month or so, is a P&L 30R kit for the 08!! More to come!!

Tony

[GilMikalian]

Nice gains! Looks all that much more dramatic on the Dynojet v. the Mustang dyno.

[File0711]

The Intake whp increase looks good, as I am having a very difficult time deciding amongst all the others (without data to compare).

However, I'm surprised Turbo XS DP only yielded 32 whp. (You mentioned stock as 238whp, and 270whp with the DP). I am struggling on this decision as well, but think I am going with Invidia's.

I know some users also stated Cobb DP offered a 60+ whp. I believe GilMikalian was one who stated that, but I'm not sure.

[mofoSTI]

I would like to see what headers and intake tube will do with the rest of your setup

[Turninconcepts.com]

Originally Posted by File0711

The Intake whp increase looks good, as I am having a very difficult time deciding amongst all the others (without data to compare).

However, I'm surprised Turbo XS DP only yielded 32 whp. (You mentioned stock as 238whp, and 270whp with the DP). I am struggling on this decision as well, but think I am going with Invidia's.

I know some users also stated Cobb DP offered a 60+ whp. I believe GilMikalian was one who stated that, but I'm not sure.

At the flywheel, sure. Keep in mind the torque increase as well from stock. We are talking about 100 ftlbs of torque to the wheels. That's a lot for just a DP.

Headers would be interesting if I can only find some I like.

Tony

[mofoSTI]

I ordered the maddad equal length headers. I think even the unequal length headers would work great. I thought I was going with the AMR intake, but after seeing this I might reconcider.

[GilMikalian]

Originally Posted by File0711

The Intake whp increase looks good, as I am having a very difficult time deciding amongst all the others (without data to compare).

However, I'm surprised Turbo XS DP only yielded 32 whp. (You mentioned stock as 238whp, and 270whp with the DP). I am struggling on this decision as well, but think I am going with Invidia's.

I know some users also stated Cobb DP offered a 60+ whp. I believe GilMikalian was one who stated that, but I'm not sure.

Unfortunately, I never did a baseline run with my car and only have post-stage2 figures to offer...I got the below plot as a result of going in for a pro-tune and being told that my levels are so safe and high that I would not benefit from a pro-tune. Got lucky with my car.

[Turninconcepts.com]

Originally Posted by GilMikalian

Unfortunately, I never did a baseline run with my car and only have post-stage2 figures to offer...I got the below plot as a result of going in for a pro-tune and being told that my levels are so safe and high that I would not benefit from a pro-tune. Got lucky with my car.

I don't know, you're running rather rich in the top end. You could probably make some more power if you leaned it out some. I am running around 11.7:1 towards the top end.

Tony

[GilMikalian]

You know, Dan said he could probably do some tweaks but he said in all honesty, it probably would not be worth the time and effort given the marginal gain (if any) I would experience.

[SubySat]

Nice Numbers.

Originally Posted by mofoSTI

I ordered the maddad equal length headers. I think even the unequal length headers would work great. I thought I was going with the AMR intake, but after seeing this I might reconcider.

The AMR intake is bad @$$. I have the older version on my car.

[spongebobnopants]

Originally Posted by Turninconcepts.com

I don't know, you're running rather rich in the top end. You could probably make some more power if you leaned it out some. I am running around 11.7:1 towards the top end.

Tony

What gear are these pulls done in. Just curious cause it doesn't look like your on the gas till well after 2k.

[Turninconcepts.com]

We tried to start them right at two. Most of them start at 2250 which is hardly well beyond 2. We were going back and forth between 3rd and 4th depending on the water temp, so i couldn't tell you want these were done in. The longer gearing of the 07+ makes dynoing in 4th more difficult as you need some serious airflow to keep the water temp reasonable.

[TeknoWhore]

Nice numbers.

I plan on going to Jorge next year.

[CFar]

What are the injectors doing? Are they maxed out?

[Turninconcepts.com]

They were mid to high 90's at torque peak and low 90's up top.