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Fast lsxrt drivability problems

Old Sep 4, 2012 | 11:12 PM
  #61  
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Originally Posted by N/ALS1
Damn I wonder if I should've got the 92mm fb now. But I hope I have some good luck with mine.
thats what im running a 92MM NW but its so big i can fit my fist in were the throttle blade is.

i know FAST makes a adaptor plate to run the stock 78MM TB with the LSXRT thats what im goin to try nexted. if that dosent work im all done with this intake and putting a TBSS/NBSS intake on it and calling it a day.
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Old Sep 5, 2012 | 09:48 AM
  #62  
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There is 1 video on youtube, mrbgray30, truck has borla xr-1 in video, all other videos are magnaflow muffler.

The TB's are known to create driveability issues, but to me it sounded like a big vaccumm leak you had.
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Old Sep 5, 2012 | 10:20 AM
  #63  
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I just orderd a adaptor plate from CBM motorsports to mount the 78MM TB to the 102MM intake well see what happens
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Old Sep 5, 2012 | 10:33 AM
  #64  
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I don't think 92 is too big... I have been running one on a TBSS intake with no issues at all.
I think it's these wacky intakes not sealing...
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Old Sep 5, 2012 | 11:28 AM
  #65  
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Twolow- did you try to torque the lower half of the shell down first and then install the upper half? When I called fast that's what they recommended to me when I called about my intake. There was a slight gap the size of a business card.
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Old Sep 5, 2012 | 12:20 PM
  #66  
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Yup I torqued the upper half to the lower half before I installed it on the truck then put the intake on the truck and torqued it down to the cylinder heads just like the directions say to do.

I also applied small amount of silicone to the back rear section Like the directions say to do.
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Old Sep 5, 2012 | 01:24 PM
  #67  
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No torque lower half to engine then upper half to lower/ engine.
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Old Sep 5, 2012 | 03:04 PM
  #68  
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Don't know how that's possible since there's no way to get to the three rear bolts once it's on the truck.
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Old Sep 5, 2012 | 06:14 PM
  #69  
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True, I'm gla I didn't tak his advice. I already have it sealed up ready to install.
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Old Sep 5, 2012 | 11:33 PM
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Originally Posted by N/ALS1
True, I'm gla I didn't tak his advice. I already have it sealed up ready to install.
im pretty fed up with comp cams there basically useless in my book
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