It sounds like you have after market cams in it at idle, do you? Or is it the exhaust? Sounds choppy and good. Congrats...

 

It's those Kooks long tube headers with free flow cats followed by the Bassanni's..... I put on those Kooks right before the whipple install and, I was impressed the kick in the pants difference it made.. Longtubes were an expensive investment but, the way it feels and sounds, totally substantiates the cost.

Too bad their hidden, they sure were purdy...




WWWOOOOOOOWWW LOOOOOOOOKKK!!!
Im a Senior Member now. WhoooHoooo..... Im assuming it's because, I hit 100 posts...

 

Careful how you brag on performance difference with the headers some people around here beg to differ with such minor mods. Can't wait till I get mine.

 

Nice numbers man, I cant wait to slap one on my L.

 

I wish someone would come out with a after market custom intake tube for the Whipple. I don't care for the black plastic one too much. A carbon fiber would be nice!

 

Or maybe a polished Ali or Stainless intake.
I know the plastic one looks pants but inside it's real smooth.

 

looks like i will be using my 4lb and the 3.375 pulley. Just got a email from JimIII from JDM about my tune. How many of you are using JDM's fuel rail kit? He advised that i should upgrade to their fuel rail kit to help with tuning.

 

I used the uprated rail which has a replaceable pressure sensor.
With 60lb injectors.

New tune makes truck run so much better now engine is well broke in.
Cleaner exhaust tips too.
Booked dyno for next Friday so we will see what the pulley combo's will give
on street gas.