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Old 04-21-2005, 02:48 PM   #1
Lordhowe
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Default 03 Cobb stage 2 vs 05 STi

did 3 pulls against a 05 STi with helix turbo back (on a private road). I have a 03 wrx cobb stage 2 running 93 octanes. dyno run results can be found here: dyno run

3 runs from 30 mph to 110, dead even on the first 2 runs, fell back by 1/2 car length on the 3rd run. I was by myself and the 05 STi had a passenger.

Reason i picked 30 mph is because i'm sitting right around 4 grand or so on 2nd, so boost was handy.
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Old 04-21-2005, 03:29 PM   #2
A418t81
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Not bad. My little brother has an '03 Cobb Stage 2 with a 3" turbo back. He ran against a stock STi and stayed even all 3 times.
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Old 04-21-2005, 03:35 PM   #3
b4437
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get stage 2.5 and u'll get him.
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Old 04-21-2005, 08:03 PM   #4
drdome99
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passengers make a bigger difference than you may think. If he had no passenger he probably would have been pulling around 3 cars on ya.
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Old 04-21-2005, 08:49 PM   #5
23b_Rex
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^ right, for every 100 lbs you add to the weight of the car, add about .1 seconds to your times
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Old 04-22-2005, 07:28 PM   #6
bliz
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its my buddies car you raced,i put the tbe on sunday.he has boost creep problems like any sti.the passenger is my buddy also he must weight atleast 350+ lbs.its nice to see a wrx keep up with an sti.
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Old 04-22-2005, 10:15 PM   #7
23b_Rex
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Quote:
Originally Posted by bliz
the passenger is my buddy also he must weight atleast 350+ lbs.
haha, that's a huge disadvantage to the STi. ever see a fat drag racer?
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Old 04-23-2005, 12:48 PM   #8
SpaceGhost
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Yes, Best funny Car driver in history, John Force. Any other questions you have?
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Old 04-23-2005, 08:14 PM   #9
REX8
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I know funny...and that was funny
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Old 04-23-2005, 08:17 PM   #10
BrandonWRX
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Quote:
Originally Posted by SpaceGhost
Yes, Best funny Car driver in history, John Force. Any other questions you have?

Yes but the STi doesnt have 3000 hp
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Old 04-24-2005, 05:24 AM   #11
akira02rex
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3 car lengths from just ONE passenger!? I highly doubt that!! A general rule of thumb I had always heard was every 18lb = 1hp. So say the guy weighed 350lb(one huge mofo!!) that would equate to around 20hp more at the MAX. Now since this is raw dead weight we are talking about, and not rotational mass..the effect of this "20hp" is not quite so significant when running from a 30mph roll... The added 350lb passenger doesn't really make that much of a difference!
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Old 04-24-2005, 10:10 AM   #12
drdome99
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^^ wanna bet? I have seen numerous videos on 350z forum of a guy who runs 13.1@107 with bolt ons. stock Zs run 13.6-13.8 with an excellent driver. When he has a passenger and stock Z doesn't he pulls barely a car. With no passengers he pulls 3 cars, with passenger in stock Z he pulls 5-6 cars.
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Old 04-24-2005, 10:38 PM   #13
Boltz
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Quote:
Originally Posted by akira02rex
The added 350lb passenger doesn't really make that much of a difference!
Sorry, but your wrong. The car would be about 10% faster without that 350lb passenger
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Old 04-24-2005, 11:44 PM   #14
ranger5oh
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350lbs... wholly crap! Go on a damn diet man. That guy is costing you some serious gas money.
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Old 04-25-2005, 01:17 AM   #15
akira02rex
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Quote:
Originally Posted by Boltz
Sorry, but your wrong. The car would be about 10% faster without that 350lb passenger
And 10% faster would be what? How can you even say that when you don't even know what his damn car runs you idiot!
Let's say his car runs 13.3 seconds in the 1/4mile. 10% faster would mean that his car now runs 11.97 seconds. Wow I'm going to gut 350lb from my car so I can run 11s guys!!

Lets get the facts straight now:
350lb = about 20hp gain from losing dead weight
Car now runs 11.97seconds over 13.3 with just a 20hp gain
Since when do cars remove over a second off their 1/4mile time with just 20 more horsepower?

So you can retract your statement and I'm sorry but YOU'RE WRONG.
It is more likely on the line of being about 1-2% faster!

Last edited by akira02rex; 04-25-2005 at 01:30 AM.
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Old 04-25-2005, 11:25 PM   #16
SupraT78
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350ibs???? damn! How tall? That is HUGE if hes not too tall. Are you sure its not more like 250-275?
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Old 04-26-2005, 01:29 AM   #17
Lordhowe
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I agree, the passenger was big, i figured at least 300 pounds since he is or seemed at the time to be around 5'8 or so. (by the way both guys were nice people). i don't want to start any argument here, just to report what i have found. The car had a 3" turbo-back, which i figure could make up for the passenger weight. So i figure i should be pretty even with a stock STi from a roll. 10% faster, that's a good one
Quote:
Originally Posted by akira02rex
And 10% faster would be what? How can you even say that when you don't even know what his damn car runs you idiot!
Let's say his car runs 13.3 seconds in the 1/4mile. 10% faster would mean that his car now runs 11.97 seconds. Wow I'm going to gut 350lb from my car so I can run 11s guys!!

Lets get the facts straight now:
350lb = about 20hp gain from losing dead weight
Car now runs 11.97seconds over 13.3 with just a 20hp gain
Since when do cars remove over a second off their 1/4mile time with just 20 more horsepower?

So you can retract your statement and I'm sorry but YOU'RE WRONG.
It is more likely on the line of being about 1-2% faster!
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Old 04-26-2005, 05:51 PM   #18
STIBungy
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I've run my modded 04 STI vs my friend's modded 04 STI. Similar mods except I'm running an MBC set at 18psi and he's running an Accessport Stage 2. He pulls on me on the highway. Recently, we both dyno'd at the same place. Mine put down 247whp/296twq, uncorrected. His put down 270whp/332wtq, uncorrected as well.

I'm in the process of ditching my MBC and FCD for an AP.
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Old 04-26-2005, 10:43 PM   #19
samh22a
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STiBungy, what your mods ? how about your friend's mod ?

Thanks
Sam
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Old 04-26-2005, 11:02 PM   #20
hybooststi
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get a utec and get ur car tuned by someone who knows what theyre doing, and you will see some results, once your where u wanna be u dont have to worry about tweekin it or whatever, thats what the remote map switch is for . so when they dyno tune your car they download your runs on pump gas , race gas, nitrous etc.. so all u do is select which map by a flick of a switch. and uncorrected is a higher hp rating sae wouldve read alot lower.
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Old 04-26-2005, 11:06 PM   #21
phamster
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Quote:
Originally Posted by drdome99
passengers make a bigger difference than you may think. If he had no passenger he probably would have been pulling around 3 cars on ya.

you are correct... 2 wrx with same mods.. both of us were cobb stage 2

i had an extra friend.. we did a pull, and i lost by 1 car.. then switch the passenger, then did pull, then he lost by 1 car.. 150 lbs makes the difference..

phamster
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Old 04-26-2005, 11:09 PM   #22
Phil Jr.
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350lbs?!?!? cripes! So the STi roughly weighed 3730lbs against a 3180lb WRX (assuming both drivers were around 180).

I bet you could easily FEEL a difference when adding 350lbs to a car.
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Old 04-26-2005, 11:26 PM   #23
hybooststi
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very true!
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Old 04-27-2005, 12:25 AM   #24
Brahmzy
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I had a COBB Stg 2 2004 WRX. I bought a 2005 Sti and was amazed at the similar performance of my WRX. I had to fix that fast, hehe. So the STi is COBB Stg 2 now.
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Old 04-28-2005, 01:57 PM   #25
STIBungy
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Mine has Helix dp, Espelir catback, Walbro fuel pump, N1 crank pulley, K&N panel filter, GFB MBC @ 18psi, Pace FCD.

His car has APS 3.5" turboback, K&N Typhoon, Cobb Stage 2 HWG map 91 oct.

Quote:
Originally Posted by samh22a
STiBungy, what your mods ? how about your friend's mod ?

Thanks
Sam
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