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Need help with turbo lag

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Old Jun 25, 2006 | 06:00 PM
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Default Need help with turbo lag

I have a T76GTQ, M6, built 347 9.0 to 1 compression made 584RWH and 627RWT. I am needing help with turbo lag from take off. My 60 foot time sux. Any where from 2.33 to 2.43 which sux bad. Stock my car would run 2.0's 60 foot need to get it down. I have stock rear on street tires. I am not spinning it's just bad sluggish. I launched at 4500 for my best 60 of 2.33.
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Old Jun 25, 2006 | 06:13 PM
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do you have a 2-step and what kind of tires are you on?
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Old Jun 25, 2006 | 07:50 PM
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EESH man, those 60's are terrible. Are you dumping it then trying to take off, or what is going on? I know on mine, after the turbo, I would run it to about 3500, then slip the clutch progressively as I put the hammer down... That was on the street, and I was able to build boost relatively quick, even with the 4.10's and the rear-mount T70. I wouldn't imagine you would have near 2.5 second 60's in a car like that. Might need to run it off a 2-step to give the turbo a head start.
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Old Jun 25, 2006 | 09:46 PM
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no two step. Should I get one? And the tires are just street tires no spinning at all. Also will cut out help?
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Old Jun 25, 2006 | 09:56 PM
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Dude, something is seriously wrong if you're on a set of hard street tires and you can't spin them with a 6 speed. Are you running a 2.73 gear or something? How are you leaving the line? You may not even NEED a 2-step, but it is recommended on manual cars with a built rear end, sticky tires and lots of traction to fire out of the hole. A car with nearly 600 rwhp and over 620lbs torque BETTER spin stock style tires. A cutout will help, but not as much as you're looking for. I am curious to see your answer, so I can make a recommendation, but something is seriously wrong if you're bogging THAT bad off the line.
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Old Jun 25, 2006 | 10:15 PM
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3:42 gears last pass left at 4500 slipped the clutch slightly I still ran 111mph in 1000 feet which I think is pretty good considering the 60 feet time.
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Old Jun 25, 2006 | 10:16 PM
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Sounds like your clutch is slipping a little more than slightly, at 4500 you should just roast thoes tires.
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Old Jun 25, 2006 | 10:17 PM
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Something is strange then, 4500 and slipping it... with that much power, you have at least a stage 3 (spec 3, ram 3, whatever) clutch right? I cannot see how you leave at that rpm and can't build boost quicker, and/or leave the line hard, or enough to spin the hell out of those street tires...
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Old Jun 25, 2006 | 10:20 PM
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clutch is not slipping at all Textrilla 0z700 SB about 1500 miles very little racing .
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Old Jun 25, 2006 | 10:24 PM
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Something isn't adding up... Sorry, didn't see that in your sig. Your 60' isn't going to affect your mph as much as your ET. 111 at 1000 isn't bad, what was it at 1320? You're making the power, but if you aren't 120+, something is wrong there even, with nearly 600 rwhp.
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Old Jun 25, 2006 | 10:25 PM
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local track is only 1000 feet.
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Old Jun 25, 2006 | 10:28 PM
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your 60' feet time has all to do with you mph. the harder you leave the faster your mph will be. the lower my et the more mph will be.
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Old Jun 25, 2006 | 10:32 PM
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not true, especially in a turbo car... LOL. I can leave the line like **** and still run like a bat out of hell. You'll see a lot of turbo cars set up incorrectly running mid 12's at 125mph+ with over 2.0 60' times. 2 step it will get you up on power therefore giving you better mph and ET if you can put it to the ground.
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Old Jun 26, 2006 | 06:02 PM
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Anyone else help me?
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Old Jun 26, 2006 | 07:42 PM
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Is your traction control turned off?
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Old Jun 26, 2006 | 08:25 PM
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post up a pic of your dyno sheet. On the street if you nail it, at what rpm do you have full boost?

- Dug
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Old Jun 26, 2006 | 09:30 PM
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sorry don't have scanner, don't have traction control. 3500rpm 400rwt 250 rwh car starts making power. Will 2 step help me being a standered?
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Old Jun 26, 2006 | 11:58 PM
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so what rpm is it making full boost if it's not starting to make power until 3500??

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Old Jun 27, 2006 | 05:43 PM
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can anyone else help?
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Old Jun 27, 2006 | 06:38 PM
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Sounds like it could be a tuning problem.Probly made great #'s on the dyno but knocking like hell on the street?A friend has the same type of setup and it hauls *** out of the hole with 1.6 60's and full boost at 3000rpm. Just sounds like a tuning/mechanical problem to me.
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