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question about launch

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Old Jun 5, 2010 | 09:04 PM
  #1  
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joutcelt
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Hey guys I just added detroit rocker cams, off road H pipe and flowmasters. Plus i have 410's with cai and 93 tune from brenspeed. My question is when i mash the peddle my car is hesitant but gains quickly. It does not spin the tires until it gets going. I have 255 45 18 on with summer tires. Any of u with similar set up have that issue. Im going to call chandler at brenspeed and see what they got me for my tune or maybe i need take it up there for some pulls on the dyno to get a better tune. thanks guys
Old Jun 6, 2010 | 04:18 AM
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do you have a manual or auto. i had the same issue after i installed all the bolt ons, exhaust, etc after i tuned it though it doesn't hesitate anymore. also mines an manual
Old Jun 6, 2010 | 05:33 AM
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its an automatic so hopefully i can get it worked out. with the 410's alone i could roast my stock tires not my tires that i have now though. IF i were at the drag strip i would bring the rpms up with brake compressed to about 2000rpms so maybe it has something to do with that. I'll see i guess when i get to the track
Old Jun 6, 2010 | 08:10 AM
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what size wheels do you have now did they help with your launch compared to the stocks
Old Jun 6, 2010 | 04:36 PM
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Did you have Brenspeed rewrite your tune for the 4.10 gear? They need to adjust shift points since you have an automatic.
Old Jun 7, 2010 | 07:45 PM
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joutcelt
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Originally Posted by alkemist
Did you have Brenspeed rewrite your tune for the 4.10 gear? They need to adjust shift points since you have an automatic.
I assumed since they had did the install of my 410's that they would know that and write the tune for it. Plus i drove my car 385 miles and only got 17 miles per gallon hand calcaulated it twice. I think im gonna call them tomorrow and see whats up. Just dont seem right to me
Old Jun 7, 2010 | 09:48 PM
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Originally Posted by joutcelt
I assumed since they had did the install of my 410's that they would know that and write the tune for it. Plus i drove my car 385 miles and only got 17 miles per gallon hand calcaulated it twice. I think im gonna call them tomorrow and see whats up. Just dont seem right to me
You have 4.10s and a CAM and you think 17MPG is bad? I average that w/ out a CAM.
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