GP Moto Header and Cobb Stage 2

stirulespr · 12-13-2006, 07:29 AM

I have upgrade my STI06 w/ a catted Cobb and a foam air filter. After loading the stage 2 program and doing a baseline on the dyno I only got 263 bhp and 280 Ft-lbs of torque.

I went ahead added a header to my STI(GP Moto with jethot coat), guess what?? I just finished doing another dyno run on the car w/ same program (Cobb stage 2) last night but w/ the header and the numbers came out lower……. 254 WHP down from 263, torque 260 down from 280......it looks like the Cobb Stage 2 and header are not a good combination...any hints on what should I do next in order to fine tune the current set up on my car.

Thanks,
J

Muffnbluff · 12-13-2006, 07:32 AM

The headers might require a protune to really unleash their potential. I'm surprised it actually lowered your hp and tq w/o a tune though.

**jsh139** · 12-13-2006, 07:34 AM

Protune.

/thread

WolfPlayer · 12-13-2006, 07:54 AM

AFR and Boost curves please.

t

RBMike · 12-13-2006, 10:17 AM

What Dyno are you using???? You will need a protune to take advantage of the header.

La Mer · 12-13-2006, 10:18 AM

is the gpmoto a EL or UEL?

stirulespr · 12-14-2006, 04:09 PM

Header is EL......

raginbull74 · 12-14-2006, 04:16 PM

protune that sucka!

johnlude85 · 12-14-2006, 04:29 PM

what are your other mods?

***520*** · 12-14-2006, 05:12 PM

dude, you just compared two different dyno runs on two different days.

unless you did a run, got the #'s, put the header on immediatly after that, than ran it again and lost power, i wouldnt be worried.

oh yah, get a protune.

stirulespr · 12-16-2006, 03:42 PM

-Dyno runs were done on different days, maybe that could play into the reduction on whp/torque.....

-Do I have to re-flash the ECU w/ another base program and then re-flash it w/ Cobb Stage 2.....so friends mention that maybe that could help...

-Other mods on car - car only has Cobb TB w/ cat , AP stage 2 93 oct....
-Perrin Foam filter
-stock all other parts

Thanks for your help,
J

blustile2240 · 02-29-2008, 10:49 AM

hey man, just to let you know. I have a perrin downpipe, hks carbon ti catback (no cats), unequal length gt-spec header, K&N panel filter and AP stage 2 off the shelf map. I went to KTR performance and to get a protune and they couldnt tune me so they gave me a free dyno... 249 to the wheels on dyno dynamics on a 85* day. Don't be alarmed... protune is what you need. Needless to say.... I was "less than happy" with my results... haha protune should bump you up...

sti_rules · 06-01-2008, 02:40 PM

I have that GPMoto EL header too. It's a great product. You should see good results with a tune.

***Szumita*** · 06-01-2008, 03:04 PM

Quote:

Originally Posted by jsh139

Protune.

/thread

***Turbineguy*** · 07-04-2008, 08:12 PM

Ideally a header will require altering the fuel and wastegate curves to see the gains. You need a tune to get it working properly.

/thread +2

12-13-2006, 07:29 AM	#1
stirulespr Amateur STI Driver Car: 06 Silver STI Posts: 22 Join Date: Jan 2006 Trader Rating: (0)	GP Moto Header and Cobb Stage 2 I have upgrade my STI06 w/ a catted Cobb and a foam air filter. After loading the stage 2 program and doing a baseline on the dyno I only got 263 bhp and 280 Ft-lbs of torque. I went ahead added a header to my STI(GP Moto with jethot coat), guess what?? I just finished doing another dyno run on the car w/ same program (Cobb stage 2) last night but w/ the header and the numbers came out lower……. 254 WHP down from 263, torque 260 down from 280......it looks like the Cobb Stage 2 and header are not a good combination...any hints on what should I do next in order to fine tune the current set up on my car. Thanks, J This ad is not endorsed by this member. Please register or login to hide this ad.

12-14-2006, 04:09 PM	#7
stirulespr Amateur STI Driver Car: 06 Silver STI Posts: 22 Join Date: Jan 2006 Trader Rating: (0)	GP Moto Header Header is EL......

12-16-2006, 03:42 PM	#11
stirulespr Amateur STI Driver Car: 06 Silver STI Posts: 22 Join Date: Jan 2006 Trader Rating: (0)	GP Moto -Dyno runs were done on different days, maybe that could play into the reduction on whp/torque..... -Do I have to re-flash the ECU w/ another base program and then re-flash it w/ Cobb Stage 2.....so friends mention that maybe that could help... -Other mods on car - car only has Cobb TB w/ cat , AP stage 2 93 oct.... -Perrin Foam filter -stock all other parts Thanks for your help, J

02-29-2008, 10:49 AM	#12
blustile2240 STI Driver Car: 05 STi Fav Mod: tein Location: Boston, MA Posts: 208 Join Date: Jun 2006 Trader Rating: (3)	Re: GP Moto Header and Cobb Stage 2 hey man, just to let you know. I have a perrin downpipe, hks carbon ti catback (no cats), unequal length gt-spec header, K&N panel filter and AP stage 2 off the shelf map. I went to KTR performance and to get a protune and they couldnt tune me so they gave me a free dyno... 249 to the wheels on dyno dynamics on a 85* day. Don't be alarmed... protune is what you need. Needless to say.... I was "less than happy" with my results... haha protune should bump you up...

06-01-2008, 02:40 PM	#13
sti_rules Junior STI Driver Car: 05 STi Fav Mod: I like it all! Location: Waynesboro, VA Posts: 143 Join Date: Sep 2006 Trader Rating: (1)	Re: GP Moto Header and Cobb Stage 2 I have that GPMoto EL header too. It's a great product. You should see good results with a tune.

12-13-2006, 07:32 AM	#2
Muffnbluff DOMINATOR Car: 05 STi OBP Fav Mod: Strut Clunk Location: STL Posts: 5,581 Join Date: May 2005 Trader Rating: (5)	The headers might require a protune to really unleash their potential. I'm surprised it actually lowered your hp and tq w/o a tune though.

12-13-2006, 07:34 AM	#3
jsh139 How YOU Doin? Car: 2006 Audi S4 Fav Mod: OMGHI2U! Location: Philly 'burbs Posts: 7,711 Join Date: Apr 2004 Trader Rating: (8)	Protune. /thread

12-13-2006, 07:54 AM	#4
WolfPlayer Moderator & ECU Tech Car: 05 CGM STI Fav Mod: mo boostaz Location: Fredneck, MD Posts: 3,578 Join Date: Jun 2004 Trader Rating: (6)	AFR and Boost curves please. t

12-13-2006, 10:17 AM	#5
RBMike The Next Petter Solberg Posts: 933 Join Date: Oct 2004 Trader Rating: (0)	What Dyno are you using???? You will need a protune to take advantage of the header.

12-13-2006, 10:18 AM	#6
La Mer NIИja Car: 2006 STI (SGM) Location: US - Southern California Posts: 38,089 Join Date: Jan 2006 Trader Rating: (5)	is the gpmoto a EL or UEL?

12-14-2006, 04:16 PM	#8
raginbull74 Grassroots STI Racer Car: silver 05 sti Fav Mod: My SIRIUS radio...listening to Howard 100!!!! Location: Long beach Posts: 538 Join Date: Nov 2005 Trader Rating: (0)	protune that sucka!

12-14-2006, 04:29 PM	#9
johnlude85 Spec C Club Car: 2005 OBP STi Fav Mod: CBE Location: Milford, NJ/Allentown, PA Posts: 1,020 Join Date: Aug 2006 Trader Rating: (0)	what are your other mods?

12-14-2006, 05:12 PM	#10
*520* STi > EVO... Wait what??? Car: 03 EVO Fav Mod: stock :( Location: Michigan / Saint Louis Posts: 12,334 Join Date: Oct 2005 Trader Rating: (1)	dude, you just compared two different dyno runs on two different days. unless you did a run, got the #'s, put the header on immediatly after that, than ran it again and lost power, i wouldnt be worried. oh yah, get a protune.

07-04-2008, 08:12 PM	#15
*Turbineguy* Non-Reformed Meth Addict Car: '06 WRB Fav Mod: 18g on meth. I gotz no lag. Location: Swampbilly Central Posts: 2,235 Join Date: Feb 2006 Trader Rating: (7)	Re: GP Moto Header and Cobb Stage 2 Ideally a header will require altering the fuel and wastegate curves to see the gains. You need a tune to get it working properly. /thread +2 This ad is not endorsed by this member. Please register or login to hide this ad.