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Old 06-22-2002, 11:05 PM   #1
hotrod
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Default Best time for WRX with an all stock exhaust system at altitude

I got to thinking today at the meet. What is the best time anyone has run at altitude with a totally stock exhaust system from cylinder head to muffler?

So far I've managed a 14.777, just wondering how that matches up with others here in the high country.

(I'll post details if anyone wants them, but at work now, so don't have access to the time slip.)

Larry
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Old 06-23-2002, 01:44 PM   #2
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I almost forgot tha my car was stock once. Anyway, I ran a 14.7@92 last summer at Bandimere with just an MBC and k&n panel.
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Old 06-23-2002, 08:09 PM   #3
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Default l0l

my friend managed a 16.05 i have no fukcing clue on how he did it but me and my friends made fun of him for 2 weeks for that. i mean he is such a crapy driver i can olmost beat him in my 2.2 witch has 80 less hp. and my clutch is slipping so ur 14.7 is a fukcing record breaker lol
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Old 06-23-2002, 10:33 PM   #4
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Default easy to do

Actually the difference between a low 16 pass and a high 14 pass is pretty easy to do. All it takes is the wrong tire pressures or a slightly muffed launch. I've done several myself. Especially at altitude the WRX needs several things just right to get that last .5 second or so of ET.

So don't rag on your friend too much cause sooner or later he'll get the chance to return the favor when you muff one.

Larry
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Old 06-24-2002, 09:54 AM   #5
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I ran a 14.10 on the stock exhaust.
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Old 06-24-2002, 10:02 AM   #6
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Just curious.. and maybe a nitpick here. Dustin, that was with Stage0 installed right? Uppipe was not stock.

Not taking anything away, but I just wanted to clarify what Larry was asking for.
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Old 06-24-2002, 10:01 PM   #7
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Default Thanks Phast

That's right I'm looking for times from cars with completely stock exhaust systems from the exhaust valve to the muffler, so no after market up pipes etc.

If sea level folks want to add info that's good just be sure to specify you were at low altitude for any ET's.

I want to try to see how far I can go without any changes. Then unlike most folks add only one componet at a time.

Most folks are doing mods as packages, so it kind of obscures the relative value of individual componets. From talking to various folks it sounds like the up pipe is probably the single most cost effective mod. Sounds like it should be worth about 0.5 sec off of a mid 14 sec ET. Then the next most cost effective componet sounds like it would be a cat back system or maybe just a muffler only.

Interested in any observations from folks that have done single componet mods.

Larry
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Old 06-24-2002, 11:19 PM   #8
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IMHO, the most cost effective mod would be an MBC. Followed closely by the uppipe. While I never an my car stock, I've seen plenty of other stock WRX's in the 15.4-15.5 range. With just MBC and K&N panel, I cut .6-.7 off my ET.

If I wasnt such a speed freak and knew 6 months ago, what I know now, I'd have alot less money into the car and it would probably be just as fast. I guess thats the cost of modding fairly new cars.
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Old 06-24-2002, 11:25 PM   #9
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Default Yep boost controller has to be at the top of the list

Yep I agree about the boost controller. I've got the Blitz dsbc so that is a lot more expensive than a MBC, but it was certainly worth the investment.

I'm also much more comfortable with the real time control of the EBC.

In a way I'm glad circumstances forced me not to throw money at the car when I first got it. Like you said, I would have probably opted for a steady succession of new and improved turbo's etc. If I could have afforded to do that at the time.

Larry
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Old 06-24-2002, 11:58 PM   #10
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14.55 With Totally stock exhaust. up-pipe to tailpipe. I had MBC and Injen CAI.
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Old 06-25-2002, 05:33 PM   #11
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the fastest in salt lake is a 13.7 with a stage0 and a flywheel. its cool
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Old 06-25-2002, 06:06 PM   #12
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Default thanks for the info

snowman:

Thanks but the stage 0 has a cat free uppipe so it is a modified exhaust.

So I'll put that in the modded up pipe column. We have 14.2's for stage zero at Bandimere, and a 13.7 for you. Vs 14.5 - 14.7's for completely stock exhaust system with some sort of boost controller, like myself and Phast had for our runs at Bandimere.

If we get enough of these tid bits we should be able to build a matrix of the relative contribution of each mod so thanks for the data.

Looks like the up pipe is worth a little less than a second on ET since the light flywheel should be responsible for part of that gain, plus just a small increment for your slightly lower altitude.

Your at about 4300 ft correct ?

Larry
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Old 06-26-2002, 09:29 AM   #13
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Default Re: thanks for the info

Larry,

Here is what I have found

2002 WRX Sedan 3230 LBS with me in it.

14.55 w/TurboXS HPMBC, Injen CAI

14.25 w/TurboXS HPMBC, Injen CAI, Vishnu Up-pipe

14.03 w/TurboXS HPMBC, Injen CAI, Vishnu Up-pipe, Vishnu Pulley, Vishnu Unichip, Colder Spark plugs.

13.80 w/TurboXS HPMBC, Injen CAI, Vishnu Up-pipe, Vishnu Pulley, Vishnu Unichip, Colder Spark plugs, BPM GT Exhaust.
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Old 06-27-2002, 12:56 AM   #14
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Default Minor update on ET

Several of us went out to Bandimere tonight. It looks like lots of good times, but I'll let each speak for themselves.

Getting back to the basic subject of the thread. Looks like the current bench mark for high altitude, and a WRX with totally stock exhaust system, stands firmly in the mid 14's.

I also broke into the 14.5's tonight with a 14.546 @ 92.01. MooreWRX also has a 14.55 with very similar equipment. I was running an EBC and he was running a MBC, he had a CAI, and I have a home brew ram-air system. To be fair I have also taken some excess weight out so I am below stock weight.

I think with some fine tuning a low 14.4 is possible, but for all the new WRX owners who want to know what a reasonable goal is for low cost modifications up here in the high country, this is a reasonable time to shoot for.

Larry
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