Weird Power Curve :( Input please.

Lutfy · 07-19-2008, 06:28 AM

Guys,

Update on the car.

2004 STi dynoed on Dyno Dynamics. Car has been low on power (noticed at the Dubai Autodrome where I couldnt pull on NSX, 350Zs, E46 M3s and a stage 2 Evo would walk away from me Hard.

Anyways, the motor was replaced with a new block at 8K miles (currently 22K) and prior to the blown motor, the car made 315 to the wheels (tuned by Scott Seigal at SOG). I am under the impression that the dealer flashed it back to stock. Mods:

K&N drop in.
TBE w/ high flow cat.
Possibly a tune? Not sure.

Any ways, the boost guage does not show a spike and the boost is set at 1.1 bar through out. Thoughts? Possible issues as to why I have a flat curve?

Thanks in advance.

Regards,

Lutfy

Kilya · 07-19-2008, 06:31 AM

Gota get the image hosted...itwont work from c:

polyol · 07-19-2008, 06:33 AM

Quote:

Originally Posted by Lutfy

Guys,

Update on the car.

2004 STi dynoed on Dyno Dynamics.[IMG]C:\Documents and Settings\Guest\Desktop\SDIM0251.JPG[/IMG]

Your going to have to upload it up to photobucket or photoshack etc.

Lutfy · 07-19-2008, 06:39 AM

Dyno Attached (see below)

Lutfy · 07-19-2008, 06:52 AM

***VSGTS14*** · 07-19-2008, 07:04 AM

what the ****!

STiSubyMan · 07-19-2008, 07:17 AM

I siad these words

"what the hell is that"

Please get tuned again or something...i do not believe that spike is good

**torquemada** · 07-19-2008, 08:59 AM

what are we seeing here? Knock correction? Could someone please explain, looks exteme weird

STiSubyMan · 07-19-2008, 09:07 AM

Boost creep doesnt look like this does it?

jasonlee4180 · 07-19-2008, 09:11 AM

Can you show the timing and boost graph? It's cutoff in your picture.

Could just be a hiccup in the dyno?

fullerton · 07-19-2008, 09:19 AM

poorly calibrated dyno. i'd worry about that tune if they can't even figure out the dyno. hp &tq do not cross at 5250.

Lutfy · 07-19-2008, 07:43 PM

Quote:

Originally Posted by fullerton

poorly calibrated dyno. i'd worry about that tune if they can't even figure out the dyno. hp &tq do not cross at 5250.

I am sure the dyno is calibrated right. Several Evos pulled some decent numbers. Its a PITA getting a decent Scooby Tuner here in Dubai. Not sure if someone else had seen this type of an issue or not.

I have the Tactrix cable (got it with me from the States). However I do not have the software which guages the, knock, boost, fuel etc. Any lead as to where I can download it from?

I'll be taking the car to the mechanic once I get the software. Thinking of doing an OTS Stage 2 Tune to keep things in check.

Frustrating....

Lutfy

fullerton · 07-20-2008, 06:48 AM

Though now that I look at the left scale, you don't look like you're showing torque.

***solovus*** · 07-20-2008, 07:01 AM

That spike is definitely not being produced by your motor. Trust me...if you had an 80hp spike at 3600 rpm you wouldn't need a dyno chart to tell you something was wrong. I recommend finding another tuner or getting open source and learning how to road tune your own car.

Edit: What is the unit of measurement of the left?

bluedemon_II · 07-20-2008, 07:35 AM

I had a similar problem with a car that i tuned, boost spiked up to 17psi and then dropped down do 14 psi all this before 4,000rpm. We found a faulty bcs was the culprit, we replaced with a stock unit and everything was fine. You can download the software from Romraider.com

07-19-2008, 06:28 AM	#1
Lutfy Junior STI Driver Location: Atlanta, GA Posts: 99 Join Date: May 2007 Trader Rating: (0)	Weird Power Curve :( Input please. Guys, Update on the car. 2004 STi dynoed on Dyno Dynamics. Car has been low on power (noticed at the Dubai Autodrome where I couldnt pull on NSX, 350Zs, E46 M3s and a stage 2 Evo would walk away from me Hard. Anyways, the motor was replaced with a new block at 8K miles (currently 22K) and prior to the blown motor, the car made 315 to the wheels (tuned by Scott Seigal at SOG). I am under the impression that the dealer flashed it back to stock. Mods: K&N drop in. TBE w/ high flow cat. Possibly a tune? Not sure. Any ways, the boost guage does not show a spike and the boost is set at 1.1 bar through out. Thoughts? Possible issues as to why I have a flat curve? Thanks in advance. Regards, Lutfy This ad is not endorsed by this member. Please register or login to hide this ad. Last edited by Lutfy : 07-19-2008 at 06:34 AM.

07-19-2008, 06:31 AM	#2
Kilya STI Driver Posts: 227 Join Date: Aug 2007 Trader Rating: (1)	Re: Weird Power Curve :( Input please. Gota get the image hosted...itwont work from c:

07-19-2008, 06:39 AM	#4
Lutfy Junior STI Driver Location: Atlanta, GA Posts: 99 Join Date: May 2007 Trader Rating: (0)	Re: Weird Power Curve :( Input please. Dyno Attached (see below) Last edited by Lutfy : 07-19-2008 at 06:52 AM.

07-19-2008, 06:52 AM	#5
Lutfy Junior STI Driver Location: Atlanta, GA Posts: 99 Join Date: May 2007 Trader Rating: (0)	Re: Weird Power Curve :( Input please.

07-19-2008, 07:04 AM	#6
*VSGTS14* Muller Chevrolet Car: 08 Chevy 2500HD Fav Mod: a new 08 STi Location: Milford, NJ Posts: 9,984 Join Date: Oct 2004 Trader Rating: (11)	Re: Weird Power Curve :( Input please. what the ****!

07-19-2008, 07:17 AM	#7
STiSubyMan Banned Car: 2002 Civic LX Fav Mod: 30+ MPG =] Location: Wisconsin Posts: 1,771 Join Date: Sep 2006 Trader Rating: (0)	Re: Weird Power Curve :( Input please. I siad these words "what the hell is that" Please get tuned again or something...i do not believe that spike is good

07-19-2008, 08:59 AM	#8
torquemada Gold Member Car: WRB EDM 06 WRX STI Fav Mod: Aerys 3" Location: Germany Posts: 1,115 Join Date: Dec 2006 Trader Rating: (0)	Re: Weird Power Curve :( Input please. what are we seeing here? Knock correction? Could someone please explain, looks exteme weird

07-19-2008, 09:07 AM	#9
STiSubyMan Banned Car: 2002 Civic LX Fav Mod: 30+ MPG =] Location: Wisconsin Posts: 1,771 Join Date: Sep 2006 Trader Rating: (0)	Re: Weird Power Curve :( Input please. Boost creep doesnt look like this does it?

07-19-2008, 09:11 AM	#10
jasonlee4180 Junior STI Driver Car: 06 Aspen White STI Location: ABQ, NM Posts: 129 Join Date: Mar 2006 Trader Rating: (1)	Re: Weird Power Curve :( Input please. Can you show the timing and boost graph? It's cutoff in your picture. Could just be a hiccup in the dyno?

07-19-2008, 09:19 AM	#11
fullerton abracious Car: AW GDF-D Fav Mod: Track time Location: Near a 100oct pump Posts: 16,553 Join Date: Oct 2005 Trader Rating: (10)	Re: Weird Power Curve :( Input please. poorly calibrated dyno. i'd worry about that tune if they can't even figure out the dyno. hp &tq do not cross at 5250.

07-20-2008, 06:48 AM	#13
fullerton abracious Car: AW GDF-D Fav Mod: Track time Location: Near a 100oct pump Posts: 16,553 Join Date: Oct 2005 Trader Rating: (10)	Re: Weird Power Curve :( Input please. Though now that I look at the left scale, you don't look like you're showing torque. Last edited by fullerton : 07-21-2008 at 04:49 AM.

07-20-2008, 07:01 AM	#14
*solovus* Lurker Car: STIzzle Fav Mod: Tint Location: Toledo, OH Posts: 1,754 Join Date: Mar 2008 Trader Rating: (0)	Re: Weird Power Curve :( Input please. That spike is definitely not being produced by your motor. Trust me...if you had an 80hp spike at 3600 rpm you wouldn't need a dyno chart to tell you something was wrong. I recommend finding another tuner or getting open source and learning how to road tune your own car. Edit: What is the unit of measurement of the left? Last edited by solovus : 07-20-2008 at 07:13 AM.

07-20-2008, 07:35 AM	#15
bluedemon_II Grassroots STI Racer Car: 04 Sti Wrb on Silver Location: Hatillo, Puerto Rico Posts: 501 Join Date: Jul 2007 Trader Rating: (0)	Re: Weird Power Curve :( Input please. I had a similar problem with a car that i tuned, boost spiked up to 17psi and then dropped down do 14 psi all this before 4,000rpm. We found a faulty bcs was the culprit, we replaced with a stock unit and everything was fine. You can download the software from Romraider.com This ad is not endorsed by this member. Please register or login to hide this ad.