what are my options for tune

325boi · 03-05-2008, 03:03 PM

ok so my tuner told me that my car is unsafe right with the mods that i have on now but its 400 for a tune and dont have that kind of cash right now, my question is can i just get my ecu flash with like a stage 2 map( that will be much cheaper... i think?) and run the car like that untill i have cash to do a dyno or real tune....? thanks

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mickeyd2005 · 03-05-2008, 03:48 PM

You should list ALL your mods.

325boi · 03-05-2008, 04:09 PM

Quote:

Originally Posted by mickeyd2005

You should list ALL your mods.

perrin intake, perrin DP, bosal exhaust, hks bov(but recirculates ), and soon a walbro fuel pump

tuner said that i can have some big problems if i dont get a tune soon!

Cyni · 03-05-2008, 04:18 PM

Why would you buy all that and not save the cash for a tune? Silly.

mickeyd2005 · 03-05-2008, 04:34 PM

Quote:

Originally Posted by 325boi

perrin intake, perrin DP, bosal exhaust, hks bov(but recirculates ), and soon a walbro fuel pump

tuner said that i can have some big problems if i dont get a tune soon!

Don't install the intake. It can cause a LOT of problems if it is not tuned.

Why do you need the fuel pump? I don't see injectors or FPR listed.

My recommendation is to install the DP and bosal exhaust and flash a conservative stage 2 opensource tune. Do some logs to check for overboosting.

Then install the HKS BOV and make sure it isn't causing idle problems or surging problems.

Then when you have money for a tune, install the intake at the tuner's shop.

325boi · 03-05-2008, 04:35 PM

Quote:

Originally Posted by Cyni

Why would you buy all that and not save the cash for a tune? Silly.

i had it from may last car( 04 sti)

325boi · 03-05-2008, 04:39 PM

Quote:

Originally Posted by mickeyd2005

Don't install the intake. It can cause a LOT of problems if it is not tuned.

Why do you need the fuel pump? I don't see injectors or FPR listed.

My recommendation is to install the DP and bosal exhaust and flash a conservative stage 2 opensource tune. Do some logs to check for overboosting.

Then install the HKS BOV and make sure it isn't causing idle problems or surging problems.

Then when you have money for a tune, install the intake at the tuner's shop.

i have the fuel pump at my house just sitting their so might as well install it .... does the intake really **** up the car..? i also have a hks intake will it be the same thing?

any one in socal know were some one can do a opensource tune..?

06rexwagon · 03-05-2008, 06:49 PM

I have the perrin SRI and it is very very close to stock maf scaling.

325boi · 03-06-2008, 01:44 AM

Quote:

Originally Posted by 06rexwagon

I have the perrin SRI and it is very very close to stock maf scaling.

so it has to do with the maf scaling? because the one i have also is very close to stock... so would it be ok to run it still or just take it off..? thanks

mickeyd2005 · 03-06-2008, 01:54 AM

I don't know about the STi, but the Perrin SRI for the LGT is definitely different than stock.

Just to be sure, I would check your AFR Learning A, B, C, and D right now with the stock intake. Then after you put on your Perrin SRI, drive on the freeway at high speed in top gear with constant throttle. Drive around like grandma for two or three days then check AFR Learning A, B, C, and D.

If the Perrin SRI is the same as stock, then those values will be the same.

If they are the same, that's still no guarantee.

Frankly, I would be very surprised if ANY short ram has the same response as stock. In the ones that I have seen, there's usually some funny bump someplace in the scale.

crazygin50 · 03-06-2008, 11:58 AM

Quote:

Originally Posted by 325boi

perrin intake, perrin DP, bosal exhaust, hks bov(but recirculates ), and soon a walbro fuel pump

tuner said that i can have some big problems if i dont get a tune soon!

You need to get it tuned, a stage 2 map will probably not be good for you with your additional mods. You can talk to my tuner writer on my site to get get some more advice(He does remote open source tuning too, so you could ask him about that as well).

Good luck.

---
Giun :: http://subiefreaks.com

jeff863 · 03-06-2008, 04:08 PM

Quote:

Originally Posted by 325boi

any one in socal know were some one can do a opensource tune..?

ev8siv3 from http://www.xpttuning.com/osecuroms/index.php lives out there you should talk to him he does good tuning.

boosteddx · 03-06-2008, 04:12 PM

hey manny i do open source tuning

oem · 03-15-2008, 08:47 PM

how would any of those mods make the car unsafe to drive?

williaty · 03-16-2008, 01:20 AM

They can potentially cause the car to run leaner than intended. That's a good way to kill an engine.

oem · 03-16-2008, 02:28 AM

sorry, but how much of a change in the calculation of the airflow could the intake make. it could not be that far off..5% at most...and why would these changes need a $400 dollar tune. couldn't you just scale the fuel up or down based on the difference of width between the sri and the oem maf. i.e. SRI diameter / 65 mm (OEM diameter) = % to scale overall fuel table. if it is over 100% he would be running lean, if under 100% he would be running rich.

williaty · 03-16-2008, 02:35 AM

Man, you need to edjamakate yourself...

Intakes can require BIG changes. Hell, one spot on mine had to be re-scaled by 22%, and it's stock diameter and no bends! (in other words, most intakes are worse).

If you were to ignore all resonance, turbulence, and centrifugal effects, the change in MAF scaling is still not as simple as the percent change in diameter.

Give it up, it's not that easy. With a MAF system, any intake at the very least needs substantial logging and almost certainly needs a tune to be called safe.

oem · 03-16-2008, 03:15 AM

pm'ed you (williaty)

williaty · 03-16-2008, 03:18 AM

/me blinks

/me looks at inbox again

no.... you didn't

williaty · 03-16-2008, 03:31 AM

OK, it finally arrived.

Anyway, to the OP, if you don't want to spend the money to get it protuned, look into opensource tuning. A couple of weeks reading some books, some questions on a tuning forum, and you'd be able to modify an off-the-shelf stage map to run well with your car.

A couple more months of studying and you'll be tuning yourself from scratch!

Not-EWRX · 03-16-2008, 04:14 PM

Quote:

Originally Posted by jeff863

ev8siv3 from http://www.xpttuning.com/osecuroms/index.php lives out there you should talk to him he does good tuning.

+1 Best solution to the problem here. He would probably do a road tune for next to nothing if you ask him right.

03-05-2008, 03:03 PM	#1
325boi Scooby Specialist Member#: 140629 Join Date: Feb 2007 Chapter/Region: SCIC Location: socal Vehicle: 06 STI	what are my options for tune ok so my tuner told me that my car is unsafe right with the mods that i have on now but its 400 for a tune and dont have that kind of cash right now, my question is can i just get my ecu flash with like a stage 2 map( that will be much cheaper... i think?) and run the car like that untill i have cash to do a dyno or real tune....? thanks * Registered users of the site do not see these ads.

03-15-2008, 08:47 PM	#14
oem Scooby Newbie Member#: 330 Join Date: Sep 1999 Location: Ca	tuning how would any of those mods make the car unsafe to drive?

03-16-2008, 02:28 AM	#16
oem Scooby Newbie Member#: 330 Join Date: Sep 1999 Location: Ca	tune sorry, but how much of a change in the calculation of the airflow could the intake make. it could not be that far off..5% at most...and why would these changes need a $400 dollar tune. couldn't you just scale the fuel up or down based on the difference of width between the sri and the oem maf. i.e. SRI diameter / 65 mm (OEM diameter) = % to scale overall fuel table. if it is over 100% he would be running lean, if under 100% he would be running rich.

03-16-2008, 03:15 AM	#18
oem Scooby Newbie Member#: 330 Join Date: Sep 1999 Location: Ca	intakes pm'ed you (williaty)

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03-05-2008, 03:48 PM	#2
mickeyd2005 Scooby Newbie Member#: 122595 Join Date: Aug 2006 Chapter/Region: NWIC Vehicle: 2005 LGT Wagon ABP	You should list ALL your mods.

03-05-2008, 04:18 PM	#4
Cyni Scooby Newbie Member#: 161822 Join Date: Oct 2007 Chapter/Region: W. Canada Location: Calgary, AB, Canada Vehicle: 2008 WRX Dark Grey Metallic	Why would you buy all that and not save the cash for a tune? Silly.

03-05-2008, 06:49 PM	#8
06rexwagon Scooby Specialist Member#: 114730 Join Date: May 2006 Chapter/Region: SWIC Location: Albuquerque, NM Vehicle: 2006 WRX Limited Wag	I have the perrin SRI and it is very very close to stock maf scaling.

03-06-2008, 01:54 AM	#10
mickeyd2005 Scooby Newbie Member#: 122595 Join Date: Aug 2006 Chapter/Region: NWIC Vehicle: 2005 LGT Wagon ABP	I don't know about the STi, but the Perrin SRI for the LGT is definitely different than stock. Just to be sure, I would check your AFR Learning A, B, C, and D right now with the stock intake. Then after you put on your Perrin SRI, drive on the freeway at high speed in top gear with constant throttle. Drive around like grandma for two or three days then check AFR Learning A, B, C, and D. If the Perrin SRI is the same as stock, then those values will be the same. If they are the same, that's still no guarantee. Frankly, I would be very surprised if ANY short ram has the same response as stock. In the ones that I have seen, there's usually some funny bump someplace in the scale.

03-06-2008, 04:12 PM	#13
boosteddx Scooby Specialist Member#: 129504 Join Date: Oct 2006 Chapter/Region: SCIC Location: SoCal Vehicle: 2004 impreza stage 2 OS-Tuning	hey manny i do open source tuning

03-16-2008, 01:20 AM	#15
williaty Scooby Guru Member#: 71092 Join Date: Sep 2004 Chapter/Region: MWSOC Location: Delaware County, Ohio Vehicle: 2005 2.5RS Wagon Regal Blue Pearl	They can potentially cause the car to run leaner than intended. That's a good way to kill an engine.

03-16-2008, 02:35 AM	#17
williaty Scooby Guru Member#: 71092 Join Date: Sep 2004 Chapter/Region: MWSOC Location: Delaware County, Ohio Vehicle: 2005 2.5RS Wagon Regal Blue Pearl	Man, you need to edjamakate yourself... Intakes can require BIG changes. Hell, one spot on mine had to be re-scaled by 22%, and it's stock diameter and no bends! (in other words, most intakes are worse). If you were to ignore all resonance, turbulence, and centrifugal effects, the change in MAF scaling is still not as simple as the percent change in diameter. Give it up, it's not that easy. With a MAF system, any intake at the very least needs substantial logging and almost certainly needs a tune to be called safe.

03-16-2008, 03:18 AM	#19
williaty Scooby Guru Member#: 71092 Join Date: Sep 2004 Chapter/Region: MWSOC Location: Delaware County, Ohio Vehicle: 2005 2.5RS Wagon Regal Blue Pearl	/me blinks /me looks at inbox again no.... you didn't

03-16-2008, 03:31 AM	#20
williaty Scooby Guru Member#: 71092 Join Date: Sep 2004 Chapter/Region: MWSOC Location: Delaware County, Ohio Vehicle: 2005 2.5RS Wagon Regal Blue Pearl	OK, it finally arrived. Anyway, to the OP, if you don't want to spend the money to get it protuned, look into opensource tuning. A couple of weeks reading some books, some questions on a tuning forum, and you'd be able to modify an off-the-shelf stage map to run well with your car. A couple more months of studying and you'll be tuning yourself from scratch!

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