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so I took my evo to the track and....

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Old Sep 22, 2005 | 09:19 AM
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so I took my evo to the track and....

12.704 @108.38 with a 1.805 60' time.

This is at like 20-21psi max so I could have turned up the boost just a little more.

I only got like 4 runs and my trap kept going. Two more runs and I would have had my 12.5 or so and that's about all the car has until I get a clutch and fuel pump.

I'm satisfied for now.

P.S.

my mods are intake, hard pipes, turboback, reflash



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Old Sep 22, 2005 | 09:28 AM
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From: Western NY
looking good

btw - what track is that you ran at?
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Old Sep 22, 2005 | 09:29 AM
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NYIRP - Geneseo NY (western NY)
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Old Sep 22, 2005 | 09:31 AM
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Originally Posted by theblue
12.704 @108.38 with a 1.805 60' time. I only got like 4 runs and my trap kept going. Two more runs and I would have had my 12.5 or so and that's about all the car has until I get a clutch and fuel pump.
Good driving, good ET, and good MPH. I assume it was pretty cool at night up there in NY. Do you know what the temps were? I don't think you would have gotten a 12.5 with 2 more runs, though. That's quite a drop for not changing anything.


Originally Posted by theblue
This is at like 20-21psi max so I could have turned up the boost just a little more. my mods are intake, hard pipes, turboback, reflash
How would you have turned up the boost? 20-21psi max is all you want on pump gas. Raising it would cause knock and reduced power in most cases.
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Old Sep 22, 2005 | 09:36 AM
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I should clarify that I was spiking to 21-22 psi and more like a 19-20solid psi for the most part. I would have no problem with a solid 21 and a spike to like 23-24.

I was also gaining about 1mph on every run as the temp dropped.. I was about 70 on my best run...
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Old Sep 22, 2005 | 09:41 AM
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22 psi is fine on pump gas with a good tune. I run 22 daily on 91 and never get knock (and your pump is 93). I do frequent logs with my UTEC to confirm there's no knock. You just have to tune the fuel and timing right, and make sure your boost gauge is accurate--I have a MAP sensor for logs and a mechanical gauge.
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Old Sep 22, 2005 | 09:45 AM
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Originally Posted by theblue
I should clarify that I was spiking to 21-22 psi and more like a 19-20solid psi for the most part. I would have no problem with a solid 21 and a spike to like 23-24.

I was also gaining about 1mph on every run as the temp dropped.. I was about 70 on my best run...
No, that's way too high on pump gas. Spiking to 21-22 and holding at 19-20 to redline is perfect. Trying to spike to 23-24 and hold 21 or higher is a sure way to induce knock, especially if you have no way of adjusting your tuning parameters, which you don't. I only run this much boost on race gas.

Your mph may have been going up as the night wore on, but that doesn't mean it would continue to go up indefinitely.

lbcevo, I hear a lot of people say they run XX psi on 91oct, but I don't know how it's possible, when I knock above 21psi on 93oct. It may come down to relative readings on various boost gauges, so I dunno. A local that I race with uses UTEC and he definitely knocks in 4th gear with any aggressive timing if he's at 20psi. He actually has to turn his boost down to 18 in 4th gear in order to not knock and run smoothly. Too many people claim they can run high boost without seeing what is happening at the top of 4th and full boost, since that can only really be done at the track.

Last edited by Warrtalon; Sep 22, 2005 at 09:47 AM.
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Old Sep 22, 2005 | 09:46 AM
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I have 2 boost gauges... my EBC records peak boost and my regular analog one I keep an eye on during the run.
also, the car never even slightly hinted that it was unhappy. I think the reflash that turbotrix did is to thank for this.

Last edited by theblue; Sep 22, 2005 at 09:50 AM.
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Old Sep 22, 2005 | 09:55 AM
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good times...I cant break a 13.0 and i've got more mods than you. Although i've got a slippery stock clutch
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Old Sep 22, 2005 | 09:56 AM
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I did run the same mph but at 13.0 and bad 2.0 60ft
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Old Sep 22, 2005 | 12:55 PM
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Originally Posted by theblue
NYIRP - Geneseo NY (western NY)
I thought the track looked farmiliar.........
Very nice times, I was up there this past saturday with the 3000gt guys, breaking my car in

Jeller
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Old Sep 22, 2005 | 01:02 PM
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Did you adjust your tire pressure at all? i did that and it helped a lot, i ran about 25psi in all 4 tires, and my best run stock was a 13.6 before i did this i was running like a 14 flat, and 13.9 on about a 90 degree day and very humid out,
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Old Sep 22, 2005 | 01:16 PM
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Originally Posted by GTSMWET
Did you adjust your tire pressure at all? i did that and it helped a lot, i ran about 25psi in all 4 tires, and my best run stock was a 13.6 before i did this i was running like a 14 flat, and 13.9 on about a 90 degree day and very humid out,
Changing tire pressure isn't just something that magically works. You only need to lower your tire pressure if you're spinning off the line. It's very unlikely that you're spinning off the line if running 14s, unless your mph is over 110 or something. You lower the pressure to reduce tirespin...
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Old Sep 22, 2005 | 01:42 PM
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Well when the factory had them at like 40 psi they were pretty solid, its like playing football on a rainy day on fresh grass w'out kleats if you can understand that concept. and caused them to spin a little on the track, this was mid-day, and all my launches were the same, along with the temp and humidity even the shifts after i lowered the tire pressure, it made a difference, not saying im the best driver int eh world, but a lot of people at the track told me to do it cuz it made a difference, and ofr me it did, my car was stock at the time
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Old Sep 22, 2005 | 02:59 PM
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Originally Posted by GTSMWET
Well when the factory had them at like 40 psi they were pretty solid, its like playing football on a rainy day on fresh grass w'out kleats if you can understand that concept. and caused them to spin a little on the track, this was mid-day, and all my launches were the same, along with the temp and humidity even the shifts after i lowered the tire pressure, it made a difference, not saying im the best driver int eh world, but a lot of people at the track told me to do it cuz it made a difference, and ofr me it did, my car was stock at the time
Right, so it's only useful if your tires are spinning.

My tires don't even spin when I run my 12.1s and 12.2s, so you can understand why I'm skeptical of yours tires spinning in stock form. At 40psi (that's very strange), they would definitely be more prone to spinning, and if the track was very slick or poorly-prepared, then it would also lead to such a problem.

In the end, all that matter is that he should know to only lower his tire pressure if he's spinning off the line.
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