[johnsm]

We were tuning 07 STI with Blouch DOM3

Following mods.

Blouch DOM3 2.4
920cc moded stock injectors
Tial 44mm EWG
Grimmick Inlet
APS 70mm
APS 525 FMIC
Walbo pump
NGK cold plugs
Snowperformane Meth injection
Perrin BOV
Stock TVG

[RONIN]

Who's tuning it? Dyno? Octane fuel? No leaks? I doubt the stock inlet is that restrictive...at 23psi you should be doing more...much more

[johnsm]

we are thinking its injectors, will be swapping them this weekends.
Mustang dyno, 92 oct with meth, very small uppipe leak.

[TheLimitedProject]

1) Who's tuning it? I'm guessing open source? Otherwise they'd know if the MAF voltage was pegged.

2) I'd suggest getting a big MAF intake like the APS 70mm. My GT52 turbo which is slightly smaller than the Dom3 maxes out a 65mm intake.

3) Get a better turbo inlet. I have the APS hard pipe and you definitely can't go wrong as with most APS products. The Perrin or Samco or whatever silicone hoses are a good
Everything else looks good.

[NSFW]

Originally Posted by johnsm

We were tuning 07 STI with Blouch DOM3
And it wont make more then 315whp at 23PSI. We thought it might be a air restriction in the inlet.

What was the limiting factor? For starters, what were your AFR, IDC, & total timing at peak power? And at peak torque?

How much boost were you shooting for?

[johnsm]

every thing fixed, it was gay ass injectors from nasioc!!!!!

[Blackongold06]

For an 07 you don't need a big maf. I agree with the Inlet upgrade. I have a sz49 with similar mods, that I open source tuned 445Hp/485TQ at 25 Psi.. the thread is on NASIOC.

The OS platform, is a very good tuning tool. After hearing the full story(this week), I don't agree with how they developed it, but I have countless hours tuning with it none the less. I have a TXS intake and my AFRS are spot on. Remember the MAF table is not an absolute...it is merely a ratio. Therefore the g/s value is not what you are actually flowing. I would agree, however, with a competent tuner..properly scaled, the 70mm is a very nice intake.

I realize you had an injector issue, but I would make sure you have no engine issues from improper fueling. Any questions, I would be happy to help you out. Good luck with the car, I am def. interested what your curve looke like.

John
Tuner, Precision Tuning
IWSTI screen name-John@Precision

I did not realize I was logged in under my girfriends screen name...OOPS. SORRY.

Originally Posted by TheLimitedProject

1) Who's tuning it? I'm guessing open source? Otherwise they'd know if the MAF voltage was pegged.

2) I'd suggest getting a big MAF intake like the APS 70mm. My GT52 turbo which is slightly smaller than the Dom3 maxes out a 65mm intake.

3) Get a better turbo inlet. I have the APS hard pipe and you definitely can't go wrong as with most APS products. The Perrin or Samco or whatever silicone hoses are a good
Everything else looks good.

[WolfPlayer]

Originally Posted by Blackongold06

For an 07 you don't need a big maf. I agree with the Inlet upgrade. I have a sz49 with similar mods, that I open source tuned 445Hp/485TQ at 25 Psi.. the thread is on NASIOC.

...

Remember the MAF table is not an absolute...it is merely a ratio. Therefore the g/s value is not what you are actually flowing. I would agree, however, with a competent tuner..properly scaled, the 70mm is a very nice intake.

I disagree with using a stock-type 65mm intake on setups where you are going to peg it. I just firmly believe in not doing this. A 70mm MAF (like the APS or Cobb unit) will give you around 400whp of resolution. Once you get over 400whp you are going to risk pegging the 70mm MAF. At this whp point, you are going to need a 3"+ MAF. Please don't give up MAF resolution by hacking the fuel tables. This is a hack and, IMHO, it is an improper way to tune.

t

[johnsm]

Would you guys still recommend me to upgrade my stock inlet?

What happen with my car is one injector was running very rich and other one very lean. Right now i got some injectors from Kito @ KAS Seattle.
Runs very good!
tuned by GetaDomTuned!

[reid-o]

Originally Posted by johnsm

Would you guys still recommend me to upgrade my stock inlet?

What happen with my car is one injector was running very rich and other one very lean. Right now i got some injectors from Kito @ KAS Seattle.
Runs very good!
tuned by GetaDomTuned!

This was confirmed?

That's not a good thing that you were running 23psi with uneven fuel flow characteristics.
Were you getting a lot of ignition retard?
Ask your tuner to post a datalog, so we can either smile or gasp.


Id honestly like to see what kind of ignition timing you pull with that particular turbine housing and compressor.

[John@Precision]

So are you implying that I must have values of either 8.5 or 13.5 in the fuel tables to achieve a desired...say 11.0 AFR? That is merely not the case. I would agree if you are living at, or after, 4.85V you should upgrade to a larger MAF in order to maintain resolution. I would not, however turn a customer away because he/she does not have a larger MAF. I will keep an eye on voltage though, and explain to the customer the potential benefits of upgrading. As I stated, or understated ,I do not encourage anyone to 'hack' a fuel table and the 70mm is a very nice option. As a tuner... or former GM engineer .. we should encourage the proper equipment for the job.

Originally Posted by WolfPlayer

I disagree with using a stock-type 65mm intake on setups where you are going to peg it. I just firmly believe in not doing this. A 70mm MAF (like the APS or Cobb unit) will give you around 400whp of resolution. Once you get over 400whp you are going to risk pegging the 70mm MAF. At this whp point, you are going to need a 3"+ MAF. Please don't give up MAF resolution by hacking the fuel tables. This is a hack and, IMHO, it is an improper way to tune.

t

[johnsm]

The turbo runs strong!
I was driving in 1st gear at 5.000 rpm give if full gas in my clutch started to slip at 6.000 rpm. lol
i cant tell where it fully spools because rpm's just jump up with it starts, i see good spool at 4000 rpm.
not too laggy.

[kigger012]

how's the fitments?? was it hard 2 fit?? b/c i was going 2 get this but some ppl say that u have 2 delete the tgv, and it doesn't fit that well....
can u post some pics??? thanks...

[WolfPlayer]

Originally Posted by John@Precision

... we should encourage the proper equipment for the job.

This is my entire point.

t

[johnsm]

Originally Posted by kigger012

how's the fitments?? was it hard 2 fit?? b/c i was going 2 get this but some ppl say that u have 2 delete the tgv, and it doesn't fit that well....
can u post some pics??? thanks...

Fitment was easy! You just have to put something behind the oil return line (i put my knife with big handle there, that helps.
first i put in the inlet on the turbo secure it, then get it in the return line.



Parts!