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    2020 GMC Denali 1500, Whippled

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Jeffnrivercity's Achievements


Enthusiast (2/11)



  1. That seems to be the consensus, now do i just order a long block from Texas speed, or rebuild what I have....
  2. I have had a few motor guy friends, tell me that they have seen clogged cats from mods is causing some piston and rear main seal problems....a My cats seem to be rattling a bit, and temp reading appear to show a problem..but no codes related to the cats are being thrown... My rear main also blew while passing traffic, on a grade... I am going to look into high flow cats and some motor work, and a good catch can vent system.. Lilbean1982, How much louder is it without the cats?..I already have the Borla attack, and it is loud enough (sez the wife..lol)
  3. I have blown 2 rear main seals..second one lasted 2 days...I also have a whipple and the canned carb tune...40k on truck and 20k on the whipple mod Pretty sure i have ring problems too...contemplating my next step... Lilbean1982, what did your cats look like when you gutted them, clogged at all?
  4. I have the same lift, same tires and stock 22" wheels...when I punch it(floor it) I do have a Whipple , as it accelerates quickly, it sways back and forth at speeds over 70mph..like the ARC is confused...gradual increases in speed do not give me the back and forth swaying...it is borderline scary
  5. Are you using the whipple canned tune?..and how did you dyno it, with out it wanting to up and down shift? Would love to try more boost, and maybe some more aftermarket goodies
  6. Did the peddle monster, nice and peppy response...but I am ready for the next step...anybody tuning these? like to add a little more boost...
  7. I had a performance shop that normally does whipples on NSXs, do mine.. Took 2 days to install the whipple, 10 days to dealing with swapping/programming the ECU.. I was on vacation, so I didn't worry about having the truck down
  8. Had mine installed last week...so much more fun than stock.. With Borla ATAK 20210611_190246_Trim.mp4
  9. 6" BDS ARC lift with Ridge Grapplers 35x12.50x22s on stock wheels
  10. Just did these on my 2020 Denali carbon pro...I took my time and it was less then 2 hours...
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