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12-13-2006, 08:29 AM
| #1 |
| Amateur STI Driver |  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. |
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12-13-2006, 08:32 AM
| #2 |
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Car: 05 STi OBP Fav Mod: Strut Clunk Location: STL Posts: 5,644
IWSTI Addict since: 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. |
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12-13-2006, 08:55 AM
| #4 |
| Moderator & ECU Tech
Car: 05 CGM STI Fav Mod: mo boostaz Location: Fredneck, MD Posts: 3,759
IWSTI Addict since: Jun 2004 Trader Rating: (6) | AFR and Boost curves please. t |
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12-14-2006, 06:12 PM
| #10 |
| STi > EVO... Wait what??? Car: 03 EVO Fav Mod: stock :( Location: Michigan / Saint Louis Posts: 12,415
IWSTI Addict since: 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. |
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12-16-2006, 04:43 PM
| #11 |
| Amateur STI Driver | 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 |
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02-29-2008, 11:50 AM
| #12 |
| STI Driver Car: 05 STi Fav Mod: tein Location: Boston, MA Posts: 238
IWSTI Addict since: 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... |
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06-01-2008, 04:05 PM
| #14 | |
| i eat cones
Car: 08 MKV GTI Fav Mod: intake Location: ma & ri Posts: 6,923
IWSTI Addict since: Oct 2006 Trader Rating: (21)   | Re: GP Moto Header and Cobb Stage 2 Quote:
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07-04-2008, 09:13 PM
| #15 |
| Non-Reformed Meth Addict Car: '06 WRB Fav Mod: A laptop and tuning software. Location: Swampbilly Central Posts: 2,421
IWSTI Addict since: Feb 2006 Trader Rating: (8) | 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. |
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