07 STI Stg2 Protune Results

[Steve.804]

I got my 2007 STI PROtuned by Dan at Mach V Motorsports in Sterling, VA.

Thanks again Dan for your hospitality and taking your time on my tune

Mods that matter:
Crucial Racing Downpipe
Crucial Racing Midpipe
Crucial Racing Exhaust Manifold Elbows
Crucial Racing 160 Thermostat
SPT 3" Cat-back
SPT Short-ram Intake
Cobb V2 AccessPort
Cobb Heat Sheild
Walbro 255lph Fuel Pump
Hallman Pro MBC

The torque numbers speak for themselves and shows the quality of tune Dan does. I love the way the car just flys when crusing in 4th gear at low rpm and you punch it.

Horsepower honestly is lower than I expected. I had my hopes on 300+awhp and 278 is a good bit shy of that. I also feel torque drops a bit more towards redline than the average dynoplot I've seen posted. Comments? Perhaps the BPV needs a little crushin?

Dynoplot on page 2!

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[Steve.804]

I know dyno's are just a tool and I truly am not hung up in the hp number. But if there is something going on that I can make right to make more than that would kick ass. I just think a STI that is able to make 340tq should be able to hit closer to 300awhp.

Here is a comparision of my STI and my previous 2002 bugeye with a TD0518G 8cm^2. Now I know the 18G has a much larger exhaust housing than the vf-43, so I'm not expecting it to hold torque in the same manner, but something in between would be nice.

[pearljam11]

red x

280 is about average for your mods anyway

[k04sti]

Graphs? Dyno numbers are meaningless. Too many variables. Take it to the track to see what you can trap. That will tell you a lot more than some numbers.

[Stames_wiltz]

your power is fine. The VFxx turbos can't breath much more than that. Other wise you are spinning it to the choke line.

[AlxSti]

red x.. but 278 sounds really low to me.. i've seen agile get up near 330whp outta stage 2+ stis. how much is a protune there??

[Bullwinkle1983]

Numbers depend on the dyno and many other factors. The thing you should most be concerned with is how the car drives on the street, and the composition of the graph. Scan and post the graph and/or compare it to many of the other stage 2 dynos on here. Its shape should be roughly similar.

[Stames_wiltz]

Originally Posted by AlxSti

red x.. but 278 sounds really low to me.. i've seen agile get up near 330whp outta stage 2+ stis. how much is a protune there??

This isn't agiles dyno. you cant directly compare dyno's as there are too many variables. Even on the same dyno. the atmospheric pressures will vary from day to day. a car may make 300 whp one day and 286 another on the same dyno.

Plus, think about it. the VFxx turbo is a 35 lbs min turbo. A general rule is that you multiply the lbs per minute by 10 and you get the CRANK hp estimate. IF Agiles dyno is making 330 whp on a VFxx turbo then you have an 6% drive train loss. You then take and put that car on a dyno with a 25% drivetrain loss and Agiles tunes don't look so credible because they would be making 263 whp. kind of a difference, don't you think?

[hottwrx02]

278 on a protune??? i made 280 on cobbs stage two map and 292 tq with just exhaust and it was on a dynojet...but aslong as your happy then good luck i still think you should of broke 300whp with a 07 sti

[Mach V Dan]

Originally Posted by Steve.804

Horsepower honestly is lower than I expected...

Hi Steve,

As we talked about when you were here, the manual boost controller -- which you had me install at the beginning of our tune session -- only allows you to move the entire boost curve up or down. The boost was hitting hard but was tapering a lot toward red line. Since I didn't have the ability to increase boost at high rpm, I couldn't make more power up there. I couldn't turn the boost up any more since mid-range boost levels would get too high.

With software boost control, we'd be able to get more top-end, since I wouldn't be limited to a single knob for all RPMs.

--Dan
Mach V
FastWRX.com

[Steve.804]

Hmm not sure why it's a red X, I have the graphs showing on my computer? Strange...not sure how else to post a pic than link to the existing URL?

If you cannot see the graphs here are the numbers-
Peak:
340tq@3100rpm
278hp@5000rpm

Redline:
240hp@6800rpm (estimated)
175hp@6800rpm (estimated)

I certainly don't expect 330awhp. If that's your expectation with the stock turbo and pump gas then you just need to find a higher than average reading dyno.

If the car dosnt have any leaks and the BPV is holding pressure fine then I can certainly accept the car is going to make what it makes.

your power is fine. The VFxx turbos can't breath much more than that. Other wise you are spinning it to the choke line.

I can certainly tell the car is begging for a larger turbo. I experience a lot of compressor surge in the upper gears at high rpm.

On the road the car feels incredible. I almost feel silly trying to critique my horsepower numbers

Another side note, when my car was bone stock I'd average 26mpg on the highway. After installing the larger fuel pump and before the tune I averaged 25mpg (expected due to the added fuel pressure). On my way home after my tune I averaged 27.5mpg. This is directly from the Cobb V2 AP woohoo!

[saab-on-the-cobb]

Originally Posted by hottwrx02

278 on a protune??? i made 280 on cobbs stage two map and 292 tq with just exhaust and it was on a dynojet...but aslong as your happy then good luck i still think you should of broke 300whp with a 07 sti

Not only that, but you've added NOTHING to this thread, hottwrx02!

Congratulations!

1) You can't compare your dyno #s to the OP's #s
2) Different day/dyno/altitude/humidity/temperature/etc
3) The OP's numbers for HP are right-on for an STi with his mods
4) Your numbers are likely INFLATED, and I'd guess he would smoke you in the 1/4 mile with very little effort
5) We don't know your torque curve vs. his
6) We don't have any logs showing if your car was even "happy" making those numbers on an off-the-shelf Cobb map
7) Pro-tunes are usually MUCH safer than OTS maps, and tend to perform better, too

To the OP:

Your HP/Torque numbers are equal to the best tunes I've seen for a stock VF43.

If you truly need lots more power, it's going to require a larger turbo.

Sure, your tuner can hit 300 WHP, but will the rest of your curve suffer? Certainly.

You are putting great numbers down on your stock turbo. Don't sweat it! Take it to the 1/4 mile track to gauge how she runs!

SOTC

[hottwrx02]

there is no need for a mbc on the 07 sti's just take that thing off if its limiting you

[Steve.804]

Originally Posted by Mach V Dan

Hi Steve,

As we talked about when you were here, the manual boost controller -- which you had me install at the beginning of our tune session -- only allows you to move the entire boost curve up or down. The boost was hitting hard but was tapering a lot toward red line. Since I didn't have the ability to increase boost at high rpm, I couldn't make more power up there. I couldn't turn the boost up any more since mid-range boost levels would get too high.

With software boost control, we'd be able to get more top-end, since I wouldn't be limited to a single knob for all RPMs.

--Dan
Mach V
FastWRX.com

What's up Dan? Thanks for finding my thread and posting a reply
And here I was thinking I was doing my car a favor by adding the Hallman MBC...
I guess in the future I'll be picking up a 3-port of some sort and maybe doing a few other things before heading your way again (like a cross-over pipe to go with my elbows and perhaps an EWG).

Thanks again for the great tune!

[saab-on-the-cobb]

Originally Posted by Steve.804

What's up Dan? Thanks for finding my thread and posting a reply
And here I was thinking I was doing my car a favor by adding the Hallman MBC...
I guess in the future I'll be picking up a 3-port of some sort and maybe doing a few other things before heading your way again (like a cross-over pipe to go with my elbows and perhaps an EWG).

Thanks again for the great tune!

I didn't see the MBC on your list. Ooops.

Yes. Try an EBCS and you'll hit a bit higher.

Still, those numbers are excellent for the minor mods you've got.


SOTC

[hottwrx02]

Originally Posted by saab-on-the-cobb

Not only that, but you've added NOTHING to this thread, hottwrx02!

Congratulations!

1) You can't compare your dyno #s to the OP's #s
2) Different day/dyno/altitude/humidity/temperature/etc
3) The OP's numbers for HP are right-on for an STi with his mods
4) Your numbers are likely INFLATED, and I'd guess he would smoke you in the 1/4 mile with very little effort
5) We don't know your torque curve vs. his
6) We don't have any logs showing if your car was even "happy" making those numbers on an off-the-shelf Cobb map
7) Pro-tunes are usually MUCH safer than OTS maps, and tend to perform better, too

To the OP:

Your HP/Torque numbers are equal to the best tunes I've seen for a stock VF43.

If you truly need lots more power, it's going to require a larger turbo.

Sure, your tuner can hit 300 WHP, but will the rest of your curve suffer? Certainly.

You are putting great numbers down on your stock turbo. Don't sweat it! Take it to the 1/4 mile track to gauge how she runs!

SOTC

1-7 check.. thanks for info. i know OTS maps are not safe which is why i got a PROtune. i can compare his numbers to other cars that where on Mach Vs dyno but i wont because Different day/dyno/altitude/humidity/temperature/etc but like i said to the OP Good luck with your car as long as it puts a smile on your face then you have nothing to worry about. take care of it..i guess i added nothing again

[hottwrx02]

Originally Posted by saab-on-the-cobb

I didn't see the MBC on your list. Ooops.

Yes. Try an EBCS and you'll hit a bit higher.

Still, those numbers are excellent for the minor mods you've got.


SOTC

from my understanding a EBCS or MBC is not need on the 07 sti's due to the ECU

[Steve.804]

^thanks hottwrx02

And thanks SOTC for chiming in. Obviously I dont know much about the whole tuning thing but after all of this I learned an important part of how MBC's compare to EBCS's.

Power wise I think my next mods are:
-FMIC (no TMIC as I dont want to repurchase an intercooler after up'ing the turbo)
-3-port BCS
-Aftermarket uppipe w/ EWG
-Crosspipe to complete my exhaust manifold

[Steve.804]

from my understanding a EBCS or MBC is not need on the 07 sti's due to the ECU

Well a 3 port boost solenoid will always offer better control than the 2 port that comes standard on our cars. I just always thought 3-port or MBC, you'll get the same results. I never realized a MBC will hurt top end power.

Dan remember my 02 bugeye and how I had a 3-port on it which didnt want to work correctly and we ended up going to a Hallman? That's why I was hesitant on giving the 3-port another shot. Live and learn!

[hottwrx02]

Originally Posted by Steve.804

Well a 3 port boost solenoid will always offer better control than the 2 port that comes standard on our cars. I just always thought 3-port or MBC, you'll get the same results. I never realized a MBC will hurt top end power.

Dan remember my 02 bugeye and how I had a 3-port on it which didnt want to work correctly and we ended up going to a Hallman? That's why I was hesitant on giving the 3-port another shot. Live and learn!

i thought the same thing but from the shops i talked to i was told im better off saving my money because it wont really help out the car/make a difference with the 07s but when tune date came for me there was not a issue with the factory BCS with my ewg on the stock turbo but its your car i think in the end its what your tuner feels good with. GL

[STi_VA]

Nice numbers man.

[OppositeLock]

Originally Posted by hottwrx02

i got a costume tune.

If you didn't get tuned on Halloween, then that's just weird dude.

[hottwrx02]

Originally Posted by OppositeLock

If you didn't get tuned on Halloween, then that's just weird dude.

**** you got me...i had some bunny ears on my sti when it was on the dyno on Halloween... H8

[4ST-AIR]

Originally Posted by hottwrx02

from my understanding a EBCS or MBC is not need on the 07 sti's due to the ECU

You need to do more research.

GM BCS or Prodrive 3-port good stuff. Never been a MBC fan.

your spot on for the WTQ might be a touch low on the WHP. If you really want to open that pig up for real gains dump that crappy SPT Power Package. I bought into that when I first got the 07 STI almost 2 years ago and when I went to the full 3" catless and P&L Signature Series exhaust (midpipe resonated) I picked up 24WHP/12WTQ worth every penny.

[hottwrx02]

Originally Posted by 4ST-AIR

You need to do more research.

GM BCS or Prodrive 3-port good stuff. Never been a MBC fan.

your spot on for the WTQ might be a touch low on the WHP. If you really want to open that pig up for real gains dump that crappy SPT Power Package. I bought into that when I first got the 07 STI almost 2 years ago and when I went to the full 3" catless and P&L Signature Series exhaust (midpipe resonated) I picked up 24WHP/12WTQ worth every penny.

i did do my research thanks. i asked my tuner and he said there was no need for it i should be fine with the stock one and i saw no issues when getting tuned. like i said ITS UP TO THE TUNER how he feels about the EBCS my tuner said i dont need it and if he finds the need for one they have it in stock(GM BCS)