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Got bored so I g-teched my car! 13's!!!

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  • Got bored so I g-teched my car! 13's!!!

    Ok, first off let me start off with I know that G-techs aren't 100% accurate, and I do plan on going to a track to get a real time, but I just wanted to get a ballpark figure for how quick the car was (even though I pretty much knew already). Let me also mention that I g-teched the car when it was stock and got a 15.334 @ 89.74 and when I took it to the track it went 14.986 @ 91.79, so it isn't that far off, and it appears to be slow. Anyways, its just for a ballpark figure so its not a huge deal.

    So my friend and I go out, calibrate the g-tech and get on the road I used before to G-tech when my car was stock. The road is a flat 2 lane road that is about 2 miles long between the stop signs, and it has little traffic, so it works good. Let me start off by telling you car condition. Car had 7/8 tank of gas. Rear tires were at 32psi, fronts at 30psi. The boost was at 8.5psi, I had a 30lb. battery in the back seat on the floor, my friend and I both had our school books (20+lbs. together), and my friend weighs 180lbs. Obviously spare tire and all that stuff was in the trunk. (plus my tools that I always keep in there) Here are what those two runs turned out as:

    1st run:
    60': 2.319
    330': 6.083
    1/8: 9.253 @ 79.32
    1000': 11.975
    1/4: 14.279 @ 98.65
    0-60 in 5.753 seconds

    2nd run:
    60': 2.226
    330': 5.993
    1/8: 9.163 @ 79.14
    1000': 11.890
    1/4: 14.204 @ 98.11
    0-60 in 5.665

    I was happy with those results, I was expecting about a 14.3-14.4 with all that weight and everything, so the results were about right. So, I said, fuck this, I know this car is a lot faster and is capable of 13's. So what did I do? Well, I ditched my friend (well, dropped him off at home), pulled the battery and my books out of the backseat, and pulled my tools out of the trunk. I lowered my front tires to 26psi, then I turned the boost up to 10psi. Went and ran it again for 2 runs, and this is what I got:

    1st run:
    60': 2.261
    330': 5.985
    1/8: 9.097 @ 80.47
    1000': 11.785
    1/4: 14.067 @ 99.55
    0-60 in 5.503

    2nd run:
    60': 2.213
    330': 5.902
    1/8: 8.992 @ 80.80
    1000': 11.675
    1/4: 13.957 @ 99.34
    0-60 in 5.334

    Those are the kind of results I wanted to see! I know this car is capable of 13's, and I did it on the street, with a shitty 60', 7/8 tank of pump gas, spare tire in the trunk, and on 2psi less boost than I plan on running at the track once I get enough fuel to it. Now I know its not 100% accurate, but those times are good enough for me! I went and looked at my stock run of 15.334 (it was still saved in the g-tech) and it went 0-100 in 19.249 seconds, look at the difference only 10 months later!

    I'm hoping to get some bigger fuel injectors (26lb. instead of 22lb.) and turn up the boost to 12psi at the track and see what'll do. I would like to see 13's before switching to a halfway decent turbo.

    Anyways, I just thought I would post this.

    Shawn
    90 Grand Prix STE 3.1 Intercooled Turbo-3100 Hybrid
    K&N, Magnaflows, No Cat, Chip, FFP Pulley, H260 Cam, No EGR.
    99 Grand Prix GT
    K&N|No Cat/ubend/res|160 tstat|shift kit|UD ALT & WP Pulleys|XP Cam|Stage 2 I/C|Pacesetters|MPS|2.9"|Custom PCM
    12.665 @ 110.44 w/2.018 60', STREET TIRES, PUMP GAS!

  • #2
    Ive heard the gtech is pretty accurate. I bought one but never got around to using it yet
    1992 Chevrolet S10
    2.8 v6 tbi 5 speed

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    • #3
      Nice numbers! I have had great luck with my G-Tech. I think the key is getting it mounted solidly every time. I have a flat surface on the top of my dash in the Camaro, and just velcro-ed the G-Tech down onto it. I think this is more solid and produces more repeatable numbers than the windshield suction-cup mount.

      I have run the G-Tech at the dragstrip ~15 times and have a spreadsheet comparing the G-Tech to the track timer. On all but one run, the ET difference was 1/10th or less. The trap speed will average 3-4mph high compared to the track timer since the G-Tech gives you an instantaneous sped at the end of the 1/4, while the track timer gives you average speed over the last 100ft or so.

      Marty
      '99 Z-28 - Weekend Driver
      '98 Dodge Neon - Winter Beater
      '84 X-11 - Time and Money Pit
      '88 Fiero Formula - Bone stock for now

      Quote of the week:
      Originally posted by Aaron
      This is why I don't build crappy headers. I'm not sure, I don't know too much about welding.

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      • #4
        Wicked! see what a better top end can do :P very nice numbers.
        Colin
        92 Sunbird GT, 3200 Hybrid 13.99@ 95.22 (2004)
        90 Eagle Talon TSi AWD 10.54 @ 129mph.

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        • #5
          sweet jesus thats a fast grand prix
          how much does a g_tech cost and where do you get one
          I Like V660s
          Does Chevy make beer
          ~Jayme~

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          • #6
            ^ Depends on which one you get. Look on eBay, should be able to get the original for less then $50.00.

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            • #7
              http://cgi.ebay.com/ebaymotors/ws/eB...category=33598 $39.95

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              • #8
                dmanit I had this hold long response typed out and I hit the wrong button. Its gone now.

                Oh well.

                good times. thats pretty impressive.

                Comment


                • #9
                  Originally posted by TheProfessor
                  sweet jesus thats a fast grand prix
                  Thanks!

                  how much does a g_tech cost and where do you get one
                  Well the regular g-tech costs like $40 or so on ebay like was posted already. However i have the g-tech pro competition which has an LCD screen and a lot of things the other one doesn't have. I can also plug it into my computer and download the data and compare different runs on graphs and stuff. But this one cost like $250 a year and a half or two years ago. However, I have no idea what they run now. Maybe $150???

                  Shawn
                  90 Grand Prix STE 3.1 Intercooled Turbo-3100 Hybrid
                  K&N, Magnaflows, No Cat, Chip, FFP Pulley, H260 Cam, No EGR.
                  99 Grand Prix GT
                  K&N|No Cat/ubend/res|160 tstat|shift kit|UD ALT & WP Pulleys|XP Cam|Stage 2 I/C|Pacesetters|MPS|2.9"|Custom PCM
                  12.665 @ 110.44 w/2.018 60', STREET TIRES, PUMP GAS!

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                  • #10
                    There's a bunch of g-tech ss's with the lcd screen on ebay for $199.99

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                    • #11
                      What kind of engine is in your grand prix?

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                      • #12
                        Just like it says in the signature, it has the original 3.1L Intercooled Turbo engine, except I have installed a Crane H-260 camshaft, and I put 3100 heads and intakes on it. All mods are in my sig. The bottom end is completely stock. 8.8:1 compression, stock bore, stock stroke. It has the stock turbo and stock exhaust manifolds (other than being ported to match the new heads) as well. And the stock (rebuilt) 4T60 tranny with 3.33:1 final drive.

                        Shawn
                        90 Grand Prix STE 3.1 Intercooled Turbo-3100 Hybrid
                        K&N, Magnaflows, No Cat, Chip, FFP Pulley, H260 Cam, No EGR.
                        99 Grand Prix GT
                        K&N|No Cat/ubend/res|160 tstat|shift kit|UD ALT & WP Pulleys|XP Cam|Stage 2 I/C|Pacesetters|MPS|2.9"|Custom PCM
                        12.665 @ 110.44 w/2.018 60', STREET TIRES, PUMP GAS!

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                        • #13
                          i always wondered
                          are the 3.1 turbo manifolds of the same design as the N/A 3.1 manifolds except for the turbo mounting point
                          I Like V660s
                          Does Chevy make beer
                          ~Jayme~

                          Comment


                          • #14
                            The front manifold is the same as far as I know..but I haven't compared them. The rear manifold is different, because the exhaust exits into the crossover instead of the downpipe. Then the turbo bolts to the crossover, and the downpipe bolts to the back of the turbo.

                            Shawn
                            90 Grand Prix STE 3.1 Intercooled Turbo-3100 Hybrid
                            K&N, Magnaflows, No Cat, Chip, FFP Pulley, H260 Cam, No EGR.
                            99 Grand Prix GT
                            K&N|No Cat/ubend/res|160 tstat|shift kit|UD ALT & WP Pulleys|XP Cam|Stage 2 I/C|Pacesetters|MPS|2.9"|Custom PCM
                            12.665 @ 110.44 w/2.018 60', STREET TIRES, PUMP GAS!

                            Comment


                            • #15
                              Pretty impressive! Too bad all the tracks are closed for the season in the North.

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